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Статті в журналах з теми "Fe-Co-Mo alloys"

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Автор: Grafiati

Опубліковано: 21 вересня 2022

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1

Nagase, Takeshi, Mitsuharu Todai, and Takayoshi Nakano. "Development of Co–Cr–Mo–Fe–Mn–W and Co–Cr–Mo–Fe–Mn–W–Ag High-Entropy Alloys Based on Co–Cr–Mo Alloys." MATERIALS TRANSACTIONS 61, no. 4 (April 1, 2020): 567–76. http://dx.doi.org/10.2320/matertrans.mt-mk2019002.

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2

Ushakova, Olga, and Raisa Malinina. "Structure and Magnetic Properties of Nanocrystalline Fe-Cr-Co Alloys for Permanent Magnets." Solid State Phenomena 190 (June 2012): 238–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.190.238.

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Анотація:

The magnetic properties of alloy containing Fe and 30%Cr, 15 % Co with addition of 3 % Mo after cold rolling were analyzed. It was shown that Hc of Fe-Cr-Co-Mo alloys with cubic texture of recrystallization increases up to 30 %: Hc = 76 kA/m. It was concluded that additional reserves of magnetic properties are created with a more perfect crystallographic and magnetic texture during the recrystallization process.

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3

Inoue, Akihisa, Bao Long Shen, and Akira Takeuchi. "Syntheses and Applications of Fe-, Co-, Ni- and Cu-Based Bulk Glassy Alloys." Materials Science Forum 539-543 (March 2007): 92–99. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.92.

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This paper reviews our recent results of the formation, fundamental properties, workability and applications of late transition metal (LTM) base bulk glassy alloys (BGAs) developed since 1995. The BGAs were obtained in Fe-(Al,Ga)-(P,C,B,Si), Fe-(Cr,Mo)-(C,B), Fe-(Zr,Hf,Nb,Ta)-B, Fe-Ln-B(Ln=lanthanide metal), Fe-B-Si-Nb and Fe-Nd-Al for Fe-based alloys, Co-(Ta,Mo)-B and Co-B-Si-Nb for Co-based alloys, Ni-Nb-(Ti,Zr)-(Co,Ni) for Ni-based alloys, and Cu-Ti-(Zr,Hf), Cu-Al-(Zr,Hf), Cu-Ti-(Zr,Hf)-(Ni,Co) and Cu-Al-(Zr,Hf)-(Ag,Pd) for Cu-based alloys. These BGAs exhibit useful properties of high mechanical strength, large elastic elongation and high corrosion resistance. In addition, Fe- and Co-based glassy alloys have good soft magnetic properties which cannot be obtained for amorphous and crystalline type magnetic alloys. The Feand Ni-based BGAs have already been used in some application fields. These LTM base BGAs are promising as new metallic engineering materials.

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4

WATANABE, Tohru, Takuya NAOE, Atsushi MITSUO, and Satoru KATSUMATA. "Preparation of Fe-Mo, Co-Mo and Ni-Mo amorphous alloys by electroplating method." Journal of the Surface Finishing Society of Japan 40, no. 3 (1989): 458–62. http://dx.doi.org/10.4139/sfj.40.458.

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5

Wang, W. S., Shuang Shii Lian, C. Chen, K. C. Tsai, W. J. Shong, and R. Y. Lee. "Improving the Oxidation Resistance of Fe-Cr-Mn Interconnector of Solid Oxide Electrolyte Fuel Cell with the Addition of Trace Elements." Advances in Science and Technology 72 (October 2010): 243–48. http://dx.doi.org/10.4028/www.scientific.net/ast.72.243.

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Fe-Cr-Mn alloy is a common material used for the metallic interconnector of solid oxide electrolyte fuel cells (SOFC). However, its high temperature oxidation resistance needs to be strengthened to improve the performance of SOFC. In this study, the effect of trace additions of Ti, Mo, Co and La on the high-temperature behavior of Fe-Cr-Mn alloy was investigated. The composition of Fe-22Cr-2Mn-X (X = Ti, Mo, Co, La) alloys was designed to maintain a bcc structure with the aid of the thermal-calc software. These alloys tended to form Cr-rich oxide in the inner layer and Mn-rich oxide in the outer layer of the specimens after oxidative tests at 850°C, thus reducing the likelihood of chromium oxide evaporation. The experimental results indicated that the addition of Co and La produced better oxidation resistance at high temperatures than Ti and Mo. In addition, the influence of trace elements on electrical resistance of the interconnector material was examined as well.

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6

Vlasák, G., C. F. Conde, D. Janičkovič, and P. Švec. "Magnetostriction measurements of (Fe–Co)–Mo–Cu–B alloys with varying atomic Fe/Co ratio." Materials Science and Engineering: A 449-451 (March 2007): 464–67. http://dx.doi.org/10.1016/j.msea.2006.02.347.

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7

Vlasák, G., D. Janičkovič, and P. Švec. "Magnetostriction Measurements of (Fe-Co)-Mo-Cu-B Alloys with Varying Atomic Fe/Co Ratio." Acta Physica Polonica A 113, no. 1 (January 2008): 107–10. http://dx.doi.org/10.12693/aphyspola.113.107.

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8

Jafari Jezeh, Mohammad Reza, Majid Tavoosi, Ali Ghasemi, and Reza Farshadnia. "Magnetic Characterization of Nanocrystalline Co-B-Si-Fe-Mo Alloys." Journal of Superconductivity and Novel Magnetism 29, no. 5 (February 5, 2016): 1377–86. http://dx.doi.org/10.1007/s10948-016-3422-5.

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9

Chen, Chun-Liang, and Sutrisna. "The Effect of Mo and Dispersoids on Microstructure, Sintering Behavior, and Mechanical Properties of W-Mo-Ni-Fe-Co Heavy Tungsten Alloys." Metals 9, no. 2 (January 22, 2019): 111. http://dx.doi.org/10.3390/met9020111.

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Анотація:

W-Mo-Ni-Fe-Co heavy tungsten alloys were fabricated by mechanical alloying. The effects of Mo and oxide dipsersoids on the characteristics and properties of the model alloys were investigated. In this study, the W-Mo matrix and γ-Ni(Fe,Co) binder phase were further synthesized with Y2O3 by a secondary ball milling method. The results suggest that the microstructure and sintering behavior of the model alloys are strongly influenced by the dispersed oxide particles. The model alloys with the Y2O3 addition demonstrate grain refinement and uniform microstructure. The dispersed particles could act as an inhibitor for diffusion of tungsten atoms and grain growth, promoting the formation of solid state during sintering. Consequently, good densification, high hardness, and elastic modulus of alloys can be achieved.

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10

Zhang, Z. J., and B. X. Liu. "Correlation of electron/atom ratio with structural stability in Mo-Fe, Mo-Co, and Mo-Ni alloys." Journal of Physics: Condensed Matter 7, no. 23 (June 5, 1995): L293—L298. http://dx.doi.org/10.1088/0953-8984/7/23/003.

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11

Nakamura, Naoji, and Hakaru Masumoto. "Strain Gage Factor and Electrical Properties of Fe-Cr-Co-W and Fe-Cr-Co-Mo Alloys." Journal of the Japan Institute of Metals 51, no. 12 (1987): 1201–8. http://dx.doi.org/10.2320/jinstmet1952.51.12_1201.

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12

Alfirano, Purwaningtyas Agustini, and Sumirat Iwan. "Microstructural and Mechanical Characterization of As-Cast Co-Cr-Mo Alloys with Various Content of Carbon and Nitrogen." Materials Science Forum 988 (April 2020): 206–11. http://dx.doi.org/10.4028/www.scientific.net/msf.988.206.

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Co-Cr-Mo alloys is the material used as a biomedical implant in human body. This material is widely used because they have excellent in corrosion and wear resistance. In this study, microstructure and results of tensile test that were affected by carbon and nitrogen were investigated. The specimens of Co-Cr-Mo alloy were made by investment casting. The compositions of the alloys are Co-28Cr-6Mo-0.8(Si, Mn, Fe)-0,2Ni-(0.08-0.25)C-(0-0.2)N. After that process, microstructure of the alloys is characterized by, SEM/EDX and XRD testing using bulk and electrolytic extracted specimens. The mechanical properties were determined by tensile test. The precipitate content in as-cast alloys was higher when carbon and nitrogen was added. The main precipitate formed in the specimens with variations in carbon and nitrogen is M23X6 type, π-phase, χ-phase, and σ-phase. Carbon and nitrogen promoted M23X6 type and π-phase precipitation, respectively, meanwhile χ-phase was formed in the alloys with low carbon content. The addition of carbon and nitrogen shows an increased in yield strength, tensile strength and elongation of as-cast Co-28Cr-6Mo-0.8(Si, Mn, Fe)-0,2Ni-(0.08-0.25)C-(0-0.2)N alloys.

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13

Tekin, A., and A. Wirth. "The Structure and Mechanical Properties of Fe-Mn-Co and Fe-Mn-Co-Mo Alloys (Part 3) / Gefüge und mechanische Eigenschaften von Fe-Mn-Co- und Fe-Mn-Co-Mo-Legierungen (Teil 3)." Practical Metallography 22, no. 7 (July 1, 1985): 335–45. http://dx.doi.org/10.1515/pm-1985-220704.

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14

Tekin, A., and A. Wirth. "The Structure and Mechanical Properties of Fe-Mn-Co and Fe-Mn-Co-Mo Alloys (Part 1) / Gefüge und mechanische Eigenschaften von Fe-Mn-Co- und Fe-Mn-Co-Mo-Legierungen (Teil 1)." Practical Metallography 22, no. 5 (May 1, 1985): 242–54. http://dx.doi.org/10.1515/pm-1985-220505.

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15

Al-Zoubi, Noura. "Elastic Parameters of Paramagnetic Fe–20Cr–20Ni-Based Alloys: A First-Principles Study." Metals 9, no. 7 (July 17, 2019): 792. http://dx.doi.org/10.3390/met9070792.

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Анотація:

The single-crystal and polycrystalline elastic parameters of paramagnetic Fe0.6−xCr0.2Ni0.2Mx (M = Al, Co, Cu, Mo, Nb, Ti, V, and W; 0 ≤ x ≤ 0.08) alloys in the face-centered cubic (fcc) phase were derived by first-principles electronic structure calculations using the exact muffin-tin orbitals method. The disordered local magnetic moment approach was used to model the paramagnetic phase. The theoretical elastic parameters of the present Fe–Cr–Ni-based random alloys agree with the available experimental data. In general, we found that all alloying elements have a significant effect on the elastic properties of Fe–Cr–Ni alloy, and the most significant effect was found for Co. A correlation between the tetragonal shear elastic constant C′ and the structural energy difference ΔE between fcc and bcc lattices was demonstrated. For all alloys, small changes in the Poisson’s ratio were obtained. We investigated the brittle/ductile transitions formulated by the Pugh ratio. We demonstrate that Al, Cu, Mo, Nb, Ti, V, and W dopants enhance the ductility of the Fe–Cr–Ni system, while Co reduces it. The present theoretical data can be used as a starting point for modeling the mechanical properties of austenitic stainless steels at low temperatures.

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16

Vernickaitė, Edita, Oksana Bersirova, Henrikas Cesiulis, and Natalia Tsyntsaru. "Design of Highly Active Electrodes for Hydrogen Evolution Reaction Based on Mo-Rich Alloys Electrodeposited from Ammonium Acetate Bath." Coatings 9, no. 2 (January 30, 2019): 85. http://dx.doi.org/10.3390/coatings9020085.

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Анотація:

The given research was driven by prospects to design Mo-rich coatings with iron group metals electrodeposited from a highly saturated ammonium acetate bath. The obtained coatings could be employed as prominent electrodes for the hydrogen evolution reaction (HER). It was found that the Mo content in Ni–Mo alloys can be tuned from 30 to 78 at.% by decreasing the molar ratio [Ni(II)]:[Mo(VI)] in the electrolyte from 1.0 to 0.25 and increasing the cathodic current density from 30 to 100 mA/cm2. However, dense cracks and pits are formed due to hydrogen evolution at high current densities and that diminishes the catalytic activity of the coating for HER. Accordingly, smoother and crack-free Ni–54 at.% Mo, Co–52 at.% Mo and Fe–54 at.% Mo alloys have been prepared at 30 mA/cm2. Their catalytic behavior for HER has been investigated in a 30 wt.% NaOH solution at temperatures ranging from 25 to 65 °C. A significant improvement of electrocatalytic activity with increasing bath temperature was noticed. The results showed that the sequence of electrocatalytic activity in alkaline media decreases in the following order: Co–52 at.% Mo > Ni–54 at.% Mo > Fe–54 at.% Mo. These peculiarities might be linked with different catalytic behavior of formed intermetallics (and active sites) in electrodeposited alloys. The designed electrodeposited Mo-rich alloys have a higher catalytic activity than Mo and Pt cast metals.

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17

Chou, Yu Hsien, Ching Yuan Bai, Ming Der Ger, Shuo Jen Lee, Chi Yuan Lee, and Chu Lung Chao. "Studies on Ni-Mo-P Coatings by Electroless Deposition." Key Engineering Materials 364-366 (December 2007): 333–39. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.333.

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This paper describes the performance of Ni-P and Ni-Mo-P alloy coatings deposited by electroless plating on the aluminum alloy 5052 to evaluate the corrosion resistance, thermal stability and electro-conductivity of coating assemblies. Corrosion behaviors of the obtained deposits in a 0.5M H2SO4 environment were investigated. The crystalline state and morphologies of Ni-P and Ni- Mo-P alloys were examined by field emission scanning electron microscopy (FE-SEM). The experimental results indicate that the Ni-Mo-P coating operated at 70°C and pH 9.0 has a nanocrystalline structure and its corrosion resistance in a 0.5M H2SO4 environment can be enhanced by the co-deposition of Mo as compared to Ni-P films. It has also been found that the Ni-Mo-P ternary alloys reveal good thermal stability after annealing at 400°C. Based on the excellent performance of Ni-Mo-P ternary alloys, these alloys have a potential to be applied to precision mould, optical parts mould, and surface metallization of substrates.

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18

Dvoretskov, R. M., А. V. Slavin, F. N. Karachevtsev, and Т. N. Zagvozdkina. "COMPARISONS OF THE NICKEL ALLOYS VZH172 AND VZHL21 REFERENCE MATERIALS KITS USING THE AES ICP METHOD." Proceedings of VIAM, no. 11 (2021): 120–32. http://dx.doi.org/10.18577/2307-6046-2021-0-11-120-132.

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Анотація:

The procedure for comparing the kits of reference materials of nickel alloys VZh172 and VZhL21 is considered. Using the method of atomic emission spectrometry with inductively coupled plasma for analytical lines of elements Al, Co, Cr, Mo, Ti, W, Zr, Fe, Mn, calibration characteristics were constructed using by two kits of reference materials VZh172 and VZhL21. According to statistical criteria an assessment is made of the possibility of joint use of the kits when constructing general calibration characteristics using the method of atomic emission spectrometry with inductively coupled plasma for the simultaneous determination of elements Al, Co, Cr, Mo, Nb, Ta, Ti, W, Zr, Fe, Mn in nickel alloys.

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19

Nadutov, V. M., V. Z. Voynash, A. O. Perekos, and V. P. Zalutskiy. "Reduction of Co, Cu, Fe, Mo and Ni Metal Salts Solution." METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 42, no. 10 (December 8, 2020): 1363–72. http://dx.doi.org/10.15407/mfint.42.10.1363.

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20

Um, C. Y., and M. E. McHenry. "Magnetic Properties of Co-Substituted Fe-Nb-Ta-Mo-B Amorphous Alloys." IEEE Transactions on Magnetics 40, no. 4 (July 2004): 2724–26. http://dx.doi.org/10.1109/tmag.2004.828977.

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21

Ghiban, Nicolae, Brandusa Ghiban, Nicolae Şerban, and Alexandru Ghiban. "Heat Treatments Influence on Corrosion Behaviour of Some Metallic Biomaterials Potentially Used in Metal-Ceramic Prosthesis." Key Engineering Materials 587 (November 2013): 293–96. http://dx.doi.org/10.4028/www.scientific.net/kem.587.293.

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Анотація:

The present paper put in evidence the influence of applying different heat treatments on some metallic materials such as cobalt and titanium alloys, usualy used for medical applications. The alloys were cobalt base alloy type CoCrMo (22%Cr, 6%Mo, rest Co), in nontreated state, quenching at 1100°C /1h/aer, quenching at 1100°C /1h/air+ sensiblizing at 550°/4h/ air, 600°/4h/air and/or 650°C/4h/air and titanium base alloys - alloy TiMo0.3Ni0,7 (0.23%Mo, 0.72%Ni, Ti rest), alloy TiAl5Fe2V2Mo1,5(1.52%Mo, 5.15%Al, 2.56%Fe, 2.35%V, Ti rest), each of them in non treated state, annealing at 1050°C/1h/air and annealing at 850°C/1h/air. Corrosion tests were made at potentiostat-galvanostat AUTOLAB, in Ringer solution (for both alloys) and NaCl infusion solution (only for cobalt base alloy) by drawing the polarization curves. Our conclusion is that by applying correct and proper heat treatments to both at cobalt alloys and in titanium alloys there is an improving of the corrosion resistance.

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22

Liu, Ning, Chen Chen, Isaac Chang, Pengjie Zhou, and Xiaojing Wang. "Compositional Dependence of Phase Selection in CoCrCu0.1FeMoNi-Based High-Entropy Alloys." Materials 11, no. 8 (July 25, 2018): 1290. http://dx.doi.org/10.3390/ma11081290.

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Анотація:

To study the effect of alloy composition on phase selection in the CoCrCu0.1FeMoNi high-entropy alloy (HEA), Mo was partially replaced by Co, Cr, Fe, and Ni. The microstructures and phase selection behaviors of the CoCrCu0.1FeMoNi HEA system were investigated. Dendritic, inter-dendritic, and eutectic microstructures were observed in the as-solidified HEAs. A simple face centered cubic (FCC) single-phase solid solution was obtained when the molar ratio of Fe, Co, and Ni was increased to 1.7 at the expense of Mo, indicating that Fe, Co, and Ni stabilized the FCC structure. The FCC structure was favored at the atomic radius ratio δ ≤ 2.8, valence electron concentration (VEC) ≥ 8.27, mixing entropy ΔS ≤ 13.037, local lattice distortion parameter α2 ≤ 0.0051, and ΔS/δ2 > 1.7. Mixed FCC + body centered cubic (BCC) structures occurred for 4.1 ≤ δ ≤ 4.3 and 7.71 ≤ VEC ≤ 7.86; FCC or/and BCC + intermetallic (IM) mixtures were favored at 2.8 ≤ δ ≤ 4.1 or δ > 4.3 and 7.39 < VEC ≤ 8.27. The IM phase is favored at electronegativity differences greater than 0.133. However, ΔS, α2, and ΔS/δ2 were inefficient in identifying the (FCC or/and BCC + IM)/(FCC + BCC) transition. Moreover, the mixing enthalpy cannot predict phase structures in this system.

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23

Kitajima, Yuri, Shigenari Hayashi, Shigeharu Ukai, and Toshio Narita. "The Effect of Additional Elements on Oxide Scale Evolution of Fe-20at.%Cr-10at.%Al Alloy at 900 °C in Air." Materials Science Forum 595-598 (September 2008): 1013–21. http://dx.doi.org/10.4028/www.scientific.net/msf.595-598.1013.

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Анотація:

The oxidation behavior of Fe-20at.%Cr-10at.%Al alloys with a small amount of an additional element such as W, Cu, Mn, Nb, Mo, Re, Co or Ti was investigated at 900 °C for up to 625hr. The fourth element addition to the FeCrAl alloy could be classified into two groups; elements (Mn, Nb, Ti) that are contained in the Al2O3 scale, and elements (W, Mo, Re, Co) which are not present in the scale. In the latter case, the elements (W, Cu) caused scale spallation. The rumpling of alloys with Mn, Nb or Ti was smaller than that of the other alloys. The surface of the alloy with Ti was the smooth. Pt marker experiments suggested that the Al2O3 scale formed on the alloy with Ti grew by inward diffusion of O, whilst the Al2O3 scale formed on the FeCrAl alloy grew by both outward diffusion of Al and inward diffusion of O. This different growth behavior due to the elements incorporated in the Al2O3 scale could have an effect on the surface rumpling behavior.

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24

Cai, Ze-Xing, Hiromi Goou, Yoshikazu Ito, Tomoharu Tokunaga, Masahiro Miyauchi, Hideki Abe, and Takeshi Fujita. "Nanoporous ultra-high-entropy alloys containing fourteen elements for water splitting electrocatalysis." Chemical Science 12, no. 34 (2021): 11306–15. http://dx.doi.org/10.1039/d1sc01981c.

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Анотація:

Nanoporous ultra-high-entropy alloys containing 14 elements (Al, Ag, Au, Co, Cu, Fe, Ir, Mo, Ni, Pd, Pt, Rh, Ru, and Ti) were obtained by dealloying. The products showed excellent electrocatalytic performance for water splitting in acidic media.

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25

Ved', M., I. Yermolenko, Yu Sachanova, and N. Sakhnenko. "Refractory metals influence on the properties of Fe-Co-Mo(W) electrolytic alloys." Materials Today: Proceedings 6 (2019): 121–28. http://dx.doi.org/10.1016/j.matpr.2018.10.084.

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26

Sugimoto, S., H. Satoh, M. Okada, and M. Homma. "The development of 100 texture in Fe-Cr-Co-Mo permanent magnet alloys." IEEE Transactions on Magnetics 27, no. 3 (May 1991): 3412–19. http://dx.doi.org/10.1109/20.79083.

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27

Zhukov, D. G., V. S. Shubakov, E. Kh Zhukova, and M. V. Gorshenkov. "Phase transformation in rapidly quenched Fe-Cr-Co-Mo-Ti-Si-B alloys." IOP Conference Series: Materials Science and Engineering 327 (March 2018): 032062. http://dx.doi.org/10.1088/1757-899x/327/3/032062.

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28

Cherednichenko, I. V., V. S. Shubakov, R. I. Malinina, A. S. Perminov, and V. P. Menushenkov. "Structure formation of the highly coercive state in Fe-Cr-Co-Mo alloys." Steel in Translation 40, no. 1 (January 2010): 93–97. http://dx.doi.org/10.3103/s0967091210010213.

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29

Conde, C. F., J. M. Borrego, J. S. Blázquez, A. Conde, P. Švec, and D. Janičkovič. "Magnetic and structural characterization of Mo-Hitperm alloys with different Fe/Co ratio." Journal of Alloys and Compounds 509, no. 5 (February 2011): 1994–2000. http://dx.doi.org/10.1016/j.jallcom.2010.10.113.

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30

Kupczyk, A., J. Świerczek, M. Hasiak, K. Prusik, J. Zbroszczyk, and P. Gębara. "Microstructure and some thermomagnetic properties of amorphous Fe-(Co)-Mn-Mo-B alloys." Journal of Alloys and Compounds 735 (February 2018): 253–60. http://dx.doi.org/10.1016/j.jallcom.2017.10.278.

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31

LUO, Bei-ping, Zhu-qing GONG, Bi-ye REN, Yu-fang YANG, and Meng-jun CHEN. "Surface structure and catalytic activity of electrodeposited Ni-Fe-Co-Mo alloy electrode by partially leaching Mo and Fe." Transactions of Nonferrous Metals Society of China 16, no. 3 (June 2006): 623–28. http://dx.doi.org/10.1016/s1003-6326(06)60110-6.

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32

Shubakov, V. S. "Heat Treatment and Structure of High-Coercivity Alloys Based on the Fe – Co – Cr and Fe – Co – Cr – Mo Systems." Metal Science and Heat Treatment 55, no. 7-8 (November 2013): 375–79. http://dx.doi.org/10.1007/s11041-013-9639-z.

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33

Lu, Z. P., C. T. Liu, C. A. Carmichael, W. D. Porter, and S. C. Deevi. "Bulk Glass Formation in an Fe-Based Fe–Y–Zr–M (M = Cr, Co, Al)–Mo–B System." Journal of Materials Research 19, no. 3 (March 2004): 921–29. http://dx.doi.org/10.1557/jmr.2004.19.3.921.

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Several new bulk metallic glasses based on Fe–Y–Zr–(Co, Cr, Al)–Mo–B, which have a glass-forming ability superior to the best composition Fe61Zr10Co7Mo5W2B15 reported recently, have been successfully developed. The as-cast bulk amorphous alloys showed a distinctly high thermal stability with glass-transition temperatures above 900 K, supercooled liquid regions above 60 K, and high strength with Vickers hardness values larger than HV 1200. The suppression of the growth of primary phases in the molten liquids and the resultant low liquidus temperatures were found to be responsible for the superior glass-forming ability in these new alloys. It was found that the addition of 2% Y not only facilitated bulk glass formation, but the neutralizing effect of Y with oxygen in the molten liquids also improved the manufacturability of these amorphous alloys.

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34

Vanderwalker, D. M. "The structure of rapidly solidified Fe-Ni-Mo-Co-B ribbons." Proceedings, annual meeting, Electron Microscopy Society of America 47 (August 6, 1989): 290–91. http://dx.doi.org/10.1017/s0424820100153427.

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Fundamental aspects of solidification can be examined by experimentation in rapid solidification processing. The structure produced depends on parameters such as cooling rate, degree of undercooling, heat flow, and growth rate. Rapidly solidified iron base alloys are being developed for structural applications.RSR I Fe-19.7Mo-14.4Ni-7.3Co-1.9Bwt % and RSR II Fe-15.0Ni-11.1Mo-7.4Co-0.84B wt% ribbons were melt spun by a jet casting technique. RSR I ribbons were annealed for one hour at 816°C.Specimens were prepared for transmission electron microscopy by punching 3 mm discs from ribbons and electropolishing in a methanol 5% perchloric acid solution.The TEM was performed on the JEM 200CX electron microscope.As solidified RSR I was found to be canposed of fine (7nm) polycrystalline α-Fe. There is evidence for the presence of Ni Mo and FeB (Fig.1). On annealing, the α-Fe transforms to γ-Fe and FeB2Mo2, with significant grain growth (Fig.2). The as-solidified RSR II contains cellular γ-Fe with fcc-Fe2 3B6 of lattice parameter a=l.067nm at the cell walls (Fig. 3).

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35

Chaurasia, Jitender, Muthuchamy Ayyapan, Paridh Patel, and Annamalai Raja. "Activated sintering of Tungsten heavy alloy." Science of Sintering 49, no. 4 (2017): 445–53. http://dx.doi.org/10.2298/sos1704445c.

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In the present work, characterization of sintering behavior of Tungsten heavy alloy has been done through powder metallurgy route using Spark plasma sintering (SPS). Fine powder of Tungsten (<30 ?m) was separately mixed with Ni, Co, Fe, Mo and Cu each with 1 weight%. Spark Plasma Sintering (SPS) technique (1200?C, 20 MPa pressure with 1 min holding time) was used to sinter the mixed powders. The maximum density was observed in W-Ni followed by Co, Fe, Cu, Mo and with least in pure tungsten sample. Optical microscopy as well SEM was done to determine the microstructure and grain coarsening. Due to the short heating time very less grain coarsening was observed. Vickers hardness test was conducted which resulted in maximum hardness in case if W-1Fe SPS sample.

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36

Qi, Liqiang, Tianyi Han, and Yajuan Zhang. "Electrostatic precipitability of TiB2-Fe-Mo-Co ceramic-metal composites." Journal of Alloys and Compounds 778 (March 2019): 507–13. http://dx.doi.org/10.1016/j.jallcom.2018.11.217.

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37

Śniadecki, Z. "The Influence of 3d and 4d Transition Metals on the Glass Forming Ability of Ternary FeCo-Based Alloys." Metallurgical and Materials Transactions A 52, no. 5 (March 11, 2021): 1861–68. http://dx.doi.org/10.1007/s11661-021-06196-7.

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AbstractThermodynamic modeling was used to determine enthalpies of formation and other thermodynamic parameters describing glass forming ability of Fe-Co-TM (TM = V, Nb, Cr, Mo) alloys. FeCo-based alloys are considered as candidates for applications as high magnetic flux density materials due to their high magnetic saturation and low magnetic anisotropy. Nevertheless, mechanical properties, especially the lack of ductility, are their main weakness. Therefore, further optimization by vitrification, further heat treatment and alloying should be considered. As the most crucial step is the synthesis of amorphous precursors, discussion is concentrated on the effect of transition metal substitution on the glass forming ability. The highest glass forming ability was reported for Fe-Co-Nb alloys. It can be also noted that the driving force for vitrification can be improved by substitution of Fe by other transition elements, as glass forming ability parameter ∆PHS reaches the lowest values for Fe-less compositions.

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38

Eidenberger, E., M. Schober, P. Staron, D. Caliskanoglu, H. Leitner, and H. Clemens. "Spinodal decomposition in Fe-25 at%Co-9 at%Mo." Intermetallics 18, no. 11 (November 2010): 2128–35. http://dx.doi.org/10.1016/j.intermet.2010.06.021.

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39

Vintaikin, B. E., and E. V. Sidorov. "Preparation of single crystal magnets from alloys of the system Fe-Cr-Co-Mo." Metal Science and Heat Treatment 32, no. 1 (January 1990): 57–58. http://dx.doi.org/10.1007/bf00780428.

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40

Prüβner, K., K. B. Alexander, B. A. Pint, P. F. Tortorelli, and I. G. Wright. "Interfacial Segregation in Oxide Scales on Nicrai-Based Alloys." Microscopy and Microanalysis 3, S2 (August 1997): 785–86. http://dx.doi.org/10.1017/s1431927600010813.

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Previous studies addressing the segregation of reactive elements in protective oxide scales and their beneficial effect on scale adhesion have primarily concentrated on primary alumina-formers (e.g. β-NiAl + FeCrAl).In our study the oxidation behaviour of three NiCrAl alloys, which form complex scales was studied in air at 1423 K and at 1473 K, both in isothermal (100 h) and in cyclic oxidation (100 x lh). The composition (in at.-%) of these alloys is the following: General Electric alloy René N5 (64.9 Ni, 7.8 Cr, 13.9 Al, 0.1 Fe, 2.1 Ta, 0.05 Hf, 1.6 W, 1.0 Re, 0.15 Si, 7.3 Co, 0.9 Mo, 0.003 Y, 0.003 Zr, 4 ppm S, 0.25 C), Ni-7Cr-6.5Al+Y (80.1 Ni, 7.2 Cr, 12.5 Al, 0.01 Fe, 0.14 Si, 0.012 Y, 18 ppm S, 0.05 C) and Ni-10Cr-10Al+Y (71.2 Ni, 9.9 Cr, 18.8 Al, 0.01 Fe, 0.02 Si, 0.041 Y, 16 ppm S, 0.04 C).

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41

Leitner, H., M. Schober, H. Clemens, D. Caliskanoglu, and F. Danoix. "Precipitation behaviour of an Fe–Co–Mo-alloy during non-isothermal ageing." International Journal of Materials Research 99, no. 4 (April 2008): 367–74. http://dx.doi.org/10.3139/146.101647.

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42

Hu, Xian Xian, Xiao Gang Lu, and Yan Lin He. "Assessments of Impurity Diffusion Coefficients of Selected Pure Metals in Fcc Fe." Advanced Materials Research 936 (June 2014): 545–51. http://dx.doi.org/10.4028/www.scientific.net/amr.936.545.

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Abstract: The atomic mobilities for impurity diffusion of Al, Au, Co, Cu, Mn, Mo, Nb, Ni, Pt, Sn and Zn in fcc Fe have been critically assessed based on the experimental diffusion coefficient data available in the literature. The impurity diffusion coefficients calculated from the atomic mobilities agree reasonably well with the reliable experimental data. This work provides a helpful guidance for the establishment of a general Fe-based mobility database to design new Fe-based alloys for practical purposes.

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43

Filonenko, N. Yu. "The Physical and Thermodynamic Functions of Borides." Фізика і хімія твердого тіла 18, no. 1 (March 15, 2017): 58–63. http://dx.doi.org/10.15330/pcss.18.1.58-63.

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In the paper the physical properties and thermodynamic functions of borides Х2В (Х=W, Mo, Mn, Fe, Co, Ni та Cr) are studied with accounting for fluctuation processes. We use the microstructure analysis, the X-ray structural and the durometric analyses to determine the physical properties of alloys. In the paper it is determined the phase composition and physical properties of borides. In this paper for the first time it is determined the thermodynamic functions of borides using the Hillert and Staffansson model with accounting for the first degree approximation of high-temperature expansion for the free energy potential of binary alloys. We obtain the temperature dependences for such thermodynamic functions as Gibbs free energy, entropy, enthalpy and heat capacity Ср along with their values at the formation temperature for Х2В (Х=W, Mo, Mn, Fe, Co, Ni та Cr). The approach under consideration enables to give more thorough from the thermodynamic point of view description of borides formed from the liquid. The outcomes of the thermodynamic function calculation for borides are in good agreement with experimental data and results of other authors.

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44

Savin, Valeriy V., Ludmila A. Savina, Vera Semina, Vasiliy Semin, and Natalia Pavlovna Dyakonova. "Crystallochemistry of Amorphous State in Ni(Co, Fe)-Nb(V, Ta, Mo+Zr) Alloy Systems." Journal of Metastable and Nanocrystalline Materials 31 (January 2019): 1–5. http://dx.doi.org/10.4028/www.scientific.net/jmnm.31.1.

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Effects of the crystallochemical factors on amorphous state formation in the Ni−Nb-based systems are studied. Alloys with compositions (Ni, Co, Fe)−(Nb, Ta, V, Mo+Zr) are prepared by rapid melt quenching method with various cooling rates. It was found that at given preparation conditions and at certain atomic size factor, glass forming ability depends on factor of electron concentration was defined as number of s+d electrons per atom. Atomic size factor is necessary take into account, too. High glass forming ability of Ni−Nb alloys are attributed to formation possibility of two distinct E93 type phases.

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45

Ding, L., D. P. Xiang, Y. L. Pan, and Y. Y. Li. "Mechanical properties and microstructural evolution of Mo–Co-co-strengthened W–Ni–Fe alloys by spark plasma sintering." Journal of Alloys and Compounds 712 (July 2017): 593–98. http://dx.doi.org/10.1016/j.jallcom.2017.04.141.

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46

Shubakov, V. S. "High-coercivity decomposition in Fe-(15, 23)%Co-30%Cr-3%Mo-0.5% Ti alloys." Russian Metallurgy (Metally) 2009, no. 2 (April 2009): 160–63. http://dx.doi.org/10.1134/s0036029509020104.

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47

Masumoto, Hakaru, Masakatsu Hinai, and Showhachi Sawaya. "Damping Capacity, Magnetic and Mechanical Properties and Corrosion Resistance of Fe-Co-Mo-Cr Alloys." Journal of the Japan Institute of Metals 51, no. 6 (1987): 584–90. http://dx.doi.org/10.2320/jinstmet1952.51.6_584.

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48

Ming, Kaisheng, Xiaofang Bi, and Jian Wang. "Precipitation strengthening of ductile Cr 15 Fe 20 Co 35 Ni 20 Mo 10 alloys." Scripta Materialia 137 (August 2017): 88–93. http://dx.doi.org/10.1016/j.scriptamat.2017.05.019.

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49

Chen, Q. J., H. B. Fan, L. Ye, S. Ringer, J. F. Sun, J. Shen, and D. G. McCartney. "Enhanced glass forming ability of Fe–Co–Zr–Mo–W–B alloys with Ni addition." Materials Science and Engineering: A 402, no. 1-2 (August 2005): 188–92. http://dx.doi.org/10.1016/j.msea.2005.04.046.

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50

Wang, Chen, Hui Zheng, Hao Ding, Xiaocao Hu, George C. Hadjipanayis, Bingshu Wang, Junfeng Chen, and Xigui Cui. "Effects of B addition on the microstructure and magnetic properties of Fe-Co-Mo alloys." Journal of Alloys and Compounds 766 (October 2018): 649–55. http://dx.doi.org/10.1016/j.jallcom.2018.06.368.

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