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Relevant bibliographies by topics / Al-Zn-Mg-Ag

Academic literature on the topic 'Al-Zn-Mg-Ag'

Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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Journal articles on the topic "Al-Zn-Mg-Ag"

1

Macchi, C. E., A. Somoza, A. Dupasquier, and I. J. Polmear. "Secondary precipitation in Al–Zn–Mg–(Ag) alloys." Acta Materialia 51, no. 17 (October 2003): 5151–58. http://dx.doi.org/10.1016/s1359-6454(03)00364-1.

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Zhong, Ji Fa, Zi Qiao Zheng, and Xian Fu Luo. "A New Ultrahigh Strength Al-Cu-Li Alloy." Materials Science Forum 794-796 (June 2014): 1050–56. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.1050.

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In this work, a new ultra-high strength Al-Cu-Li alloy was investigated. The ultimate strength, yield strength and elongation of the newly designed alloy by artificial aging are 647.2MPa, 609.4MPa and 7.3% respectively. Among the main strengthening phases of T1, θ′ and S′ in the experimental alloys, T1is the dominant one. The combined addition of Mg and Ag promoted the precipitation of T1and increased the strength of the new alloy greatly. Zn had a similar effect as Ag during the aging strengthening progress, when added with Mg. Among the three micro-alloying elements, Mg, Ag and Zn, Mg had the strongest influence on age strengthening. Compared with the combined additions of (Mg +Ag) and (Mg + Zn), (Ag + Zn) had the weakest influence on aging strengthening. Pre-deformation before aging promoted the precipitation of T1 phase which weakened the influence of micro-alloying elements (Mg, Ag and Zn) on strengthening the alloys and minished the strength difference between alloy containing (Mg + Ag + Zn) and alloys containing two of them.

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Ferragut, Rafael, A. Dupasquier, M. M. Iglesias, C. E. Macchi, Alberto Somoza, and Ian J. Polmear. "Vacancy-Solute Aggregates in Al-Zn-Mg-(Cu, Ag)." Materials Science Forum 519-521 (July 2006): 309–14. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.309.

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Positron annihilation spectroscopy in two versions (lifetime and coincidence Doppler broadening) has been applied to investigate solute/vacancy interactions when minor amounts (<1wt.%) of Ag or Cu are added to the alloy Al-4Zn-3Mg (wt.%) during ageing at 150°C. The results show early clustering of vacancies with Zn (and with Cu, if present). Ag displays a strong interaction with vacancies in competition with Mg and forms clusters that may help further aggregation of the other alloying elements during artificial ageing. High Mg concentration is observed at the misfit interfaces of semi-coherent or incoherent precipitates.

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4

Riontino, G., P. Mengucci, and S. Abis. "Precipitation sequence in an Al-Cu-Mg-Ag-Zn alloy." Philosophical Magazine A 72, no. 3 (September 1995): 765–82. http://dx.doi.org/10.1080/01418619508243799.

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Watanabe, Katsumi, Susumu Ikeno, Tomoo Yoshida, Satoshi Murakami, and Kenji Matsuda. "TEM Observation for Precipitates Structure of Aged Al-Zn-Mg Series Al Alloys Addition of Cu or Ag." Advanced Materials Research 922 (May 2014): 791–94. http://dx.doi.org/10.4028/www.scientific.net/amr.922.791.

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Al-Zn-Mg alloy has been known as one of the aluminum alloys with the good age-hardening ability and the high strength among commercial aluminum alloys. The mechanical property of the limited ductility, however, is required to further improvement. In this work, three alloys, which were added Cu or Ag into the Al-Zn-Mg alloy, were prepared to compare the effect of the additional elements on the aging behavior. Ag or Cu added alloy showed higher maximum hardness than Ag or Cu free alloy. The η’ phase were observed in all alloys peak-aged at 423K. According to addition of Ag or Cu, the number density of the precipitates increased than Ag or Cu free alloy.

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Mukhopadhyay, A. K., K. Satya Prasad, Vikas Kumar, G. Madhusudhan Reddy, S. V. Kamat, and V. K. Varma. "Key Microstructural Features Responsible for Improved Stress Corrosion Cracking Resistance and Weldability in 7xxx Series Al Alloys Containing Micro / Trace Alloying Additions." Materials Science Forum 519-521 (July 2006): 315–20. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.315.

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The commercial 7xxx series Al alloys are based on medium strength Al-Zn-Mg and high strength Al-Zn-Mg-Cu systems. The medium strength alloys are weldable, whilst the high strength alloys are nonweldable. On the other hand, the Cu-free, weldable alloys suffer from poor SCC resistance. It is the purpose of this article to provide quantitative data and microstructural analysis to demonstrate that small additions of either Ag or Sc to Al-Zn-Mg and Al-Zn-Mg-Cu alloys bring about very significant improvement in SCC resistance and weldability, respectively. The improvement in SCC resistance of the Cu-bearing alloys due to over aging and retrogression and reaging (RRA) is further discussed in light of a similar improvement in the SCC resistance of these alloys, when peak aged, due to Ag and Sc additions.

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7

Mizutani, U., and A. Kamiya. "Electronic specific heat measurements for quasicrystals and Frank-Kasper crystals in Mg-Al-Ag, Mg-Al-Cu, Mg-Al-Zn, Mg-Ga-Zn and Al-Li-Cu alloy systems." Journal of Physics: Condensed Matter 3, no. 21 (May 27, 1991): 3711–18. http://dx.doi.org/10.1088/0953-8984/3/21/004.

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Zhang, Xi Yan, Feng Jiang, Shi-jie Zhou, Chong Jia, Min Zhao, and Xue Qin Li. "Study on Microstructure and Properties of Mg-9Al-xZn Alloys." Materials Science Forum 475-479 (January 2005): 477–80. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.477.

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Some Zn and a little Ag are added into ZM5 magnesium alloy (one of Mg-9 wt%Al-1 wt%Zn alloys in China), and the differences of the microstructures and properties between the new alloy and ZM5 is investigated. Effects of heat treatment and alloying elements (Zn and Ag) on the microstructure and tensile properties of Mg-9Al-xZn alloys, and relationships between the chemical composition, microstructure and properties are investigated. Zn ad Ag have obvious solid solution strengthening effects on Mg-9Al-xZn alloy, while Ag is detrimental to the corrosion resistance after being artificial aged. The morphology of pearlite-like secondary γ(Mg17Al12) phase (γII) has close relation with the properties.

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Mizutani, U., Y. Sakabe, and T. Matsuda. "Electronic properties of icosahedral quasicrystals in Mg-Al-Ag, Mg-Al-Cu and Mg-Zn-Ga alloy systems." Journal of Physics: Condensed Matter 2, no. 28 (July 16, 1990): 6153–67. http://dx.doi.org/10.1088/0953-8984/2/28/006.

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10

Ning, Ai Lin, Zhi Yi Liu, Chun Feng, and Su Min Zeng. "Effect of Second Phases on Tensile Property in Artificial Ageing and RRA Process of Super-High Strength Aluminum Alloy." Materials Science Forum 546-549 (May 2007): 855–62. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.855.

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The evolution of second phases and its effect on tensile mechanical property in artificial ageing and RRA process of super-high strength aluminum alloy is investigated.The result of tensile test shows that the samples of Al-Zn-Mg-Cu-Ag alloy aged at lower temperature(100°C) not only have higher tensile strength up to 753Mpa but also relatively higher tensile elongation above 9% than normal temperature(120°C) in artificial ageing. The sample of Al-Zn-Mg-Cu alloy has the highest tension strength upto 788Mpa when aged at 100°C for 48 hours in single step of artificial ageing. Further more in RRA process samples of Al-Zn-Mg-Cu alloy preaged at 100°C for 24 hours retrogressed at 200°C for 7min and reaged at 100°Cfor 24 hours present the best tensile strength of 795Mpa than others. The tensile strength of Al-Zn-Mg-Cu alloy after RRA treated decreases with prolonging of retrogression time and reageing time starting from 7mins and 24 houres respectively. SEM observation shows that crack of the samples in tensile test is created at large particles in the fracture while there are more particles of undissolved phase in Al-Zn-Mg-Cu alloy containing Ag. TEM observation shows that the dominant strengthening particle corresponding to the peak strength of Al-Zn-Mg-Cu alloy containing Ag when aged at 120°C for 8 hours is η’ phase while dominant strengthening particle is G.P zone when aged at 100°C for 80 hours. However, η’ phase as the dominant strengthening particles corresponds to the peak strength of Al-Zn-Mg-Cu alloy without content of Ag when aged at 100°C for 48hours. TEM observation also shows that G.P zone as strengthening particle is dominant in the samples of Al-Zn-Mg-Cu alloy reaged at 100°C for 24 hours, and strengthening particles is coarsened when the sample is retrogressed at 200°C and reaged for a longer time. It is suggested that whether at the presence of coarse particles of undissolved phases or when G.P zone and η’ particle grow up in the retrogression ,sample needs deformable G.P zone instead of undeformable η’ in subsequent artificial ageing and reageing as dominant strengthening particle, in order to present a larger freedom spacing for dislocation to slip and let the sample not to behave too brittle to display high resistance to imposed plastic deformation or high tensile strength.

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Dissertations / Theses on the topic "Al-Zn-Mg-Ag"

1

Caraher, Sally Kate 1974. "Clustering and precipitation processes in age-hardened Al-Zn-Mg-(Ag, Cu) alloys." Monash University, School of Physics and Materials Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7803.

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Book chapters on the topic "Al-Zn-Mg-Ag"

1

Ferragut, Rafael, A. Dupasquier, M. M. Iglesias, C. E. Macchi, Alberto Somoza, and Ian J. Polmear. "Vacancy-Solute Aggregates in Al-Zn-Mg-(Cu, Ag)." In Materials Science Forum, 309–14. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-408-1.309.

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Watanabe, Katsumi, Susumu Ikeno, Tomoo Yoshida, Satoshi Murakami, and Kenji Matsuda. "Variation of Aging Behavior for Cu or Ag Addition Al-Zn-Mg Alloys." In PRICM, 1349–54. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118792148.ch169.

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3

Watanabe, Katsumi, Susumu Ikeno, Tomoo Yoshida, Satoshi Murakami, and Kenji Matsuda. "Variation of Aging Behavior for Cu or Ag Addition Al-Zn-Mg Alloys." In Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing, 1349–54. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-48764-9_169.

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4

Miura, Naoya, Katsumi Watanabe, Tokimasa Kawabata, Yasuhiro Uetani, Susumu Ikeno, Tomoo Yoshida, Satoshi Murakami, and Kenji Matsuda. "Effect of Cu or Ag Addition on Tensile Deformation in Al-Zn-Mg Alloys." In ICAA13: 13th International Conference on Aluminum Alloys, 1259–61. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118495292.ch191.

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Miura, Naoya, Katsumi Watanabe, Tokimasa Kawabata, Yasuhiro Uetani, Susumu Ikeno, Tomoo Yoshida, Satoshi Murakami, and Kenji Matsuda. "Effect of Cu or Ag Addition on Tensile Deformation in Al-Zn-Mg Alloys." In ICAA13 Pittsburgh, 1259–61. Cham: Springer International Publishing, 2012. http://dx.doi.org/10.1007/978-3-319-48761-8_191.

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Watanabe, Katsumi, Tokimasa Kawabata, Susumu Ikeno, Tomoo Yoshida, Satoshi Murakami, and Kenji Matsuda. "Effect of Ag and Cu Contents on the Age Hardening Behavior of Al-Zn-Mg Alloys." In ICAA13: 13th International Conference on Aluminum Alloys, 1255–58. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118495292.ch190.

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7

Watanabe, Katsumi, Tokimasa Kawabata, Susumu Ikeno, Tomoo Yoshida, Satoshi Murakami, and Kenji Matsuda. "Effect of Ag and Cu Contents on the Age Hardning Behavior of Al-Zn-Mg Alloys." In ICAA13 Pittsburgh, 1255–58. Cham: Springer International Publishing, 2012. http://dx.doi.org/10.1007/978-3-319-48761-8_190.

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8

Ogura, Tomo, Shoichi Hirosawa, Alfred Cerezo, and Tatsuo Sato. "Quantitative Correlation between Strength, Ductility and Precipitate Microstructures with PFZ in Al-Zn-Mg(-Ag, Cu) Alloys." In Materials Science Forum, 431–36. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-408-1.431.

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9

Carow-Watamura, U., D. V. Louzguine, and A. Takeuchi. "Au-Mg-Zn (102)." In Physical Properties of Ternary Amorphous Alloys. Part 1: Systems from Ag-Al-Ca to Au-Pd-Si, 373–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-03481-7_117.

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10

Skoko, Željko, and Stanko Popović. "Microstructure of Al-Cu, Al-Zn, Al-Ag-Zn, and Al-Zn-Mg Alloys." In Encyclopedia of Aluminum and Its Alloys. Boca Raton: CRC Press, 2019. http://dx.doi.org/10.1201/9781351045636-140000172.

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The precipitation phenomena and their connection with the microstructure of several Al alloys (Al-Cu, Al-Zn, Al-Ag-Zn, Al-Zn-Mg) are described with respect to the concentration and applied thermal treatment. The alloys were rapidly quenched or slowly cooled from a temperature higher than the solid solution temperature to room temperature. Both quenched-aged and slowly cooled alloys were heated from room temperature to the solid solution state and cooled back to room temperature, and their microstructure and precipitation phenomena were followed in situ by X-ray powder diffraction, e.g., anisotropy of thermal expansion, phase transitions, thermal hysteresis in phase transitions, change of precipitate shape, partial or complete dissolution of precipitates in the matrix, and formation of solid solution. It has been shown that the microstructure strongly depends on the previous thermal history of the alloys.

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