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Journal articles on the topic 'Transcrystalline'

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Published: 4 June 2021
Last updated: 21 February 2023

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1

Klein, Nava, and Gad Marom. "Thermal Expansion of Transcrystalline Strips." Advanced Composites Letters 4, no. 1 (January 1995): 096369359500400. http://dx.doi.org/10.1177/096369359500400102.

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The results of a direct measurement of the longitudinal thermal expansion coefficient of an isolated transcrystalline layer are reported below for a nylon 66 transcrystalline strip grown on a Kevlar 29 aramid fibre. It is shown that the expansivity of the transcrystalline layer is more than an order of magnitude smaller than that of the bulk crystallized matrix. It is hypothesized that the transcrystalline layer relieves thermal stresses in composite materials by matching the expansivities of the constituents.
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2

Hanmin, Zeng, Zhang Zhiyi, Peng Weizou, and Pu Tiayou. "Transcrystalline structure of PEEK." European Polymer Journal 30, no. 2 (February 1994): 235–37. http://dx.doi.org/10.1016/0014-3057(94)90165-1.

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3

Amitay-Sadovsky, E., S. Zheng, J. Smith, and H. D. Wagner. "Directional indentation of transcrystalline polypropylene." Acta Polymerica 49, no. 10-11 (October 1998): 588–93. http://dx.doi.org/10.1002/(sici)1521-4044(199810)49:10/11<588::aid-apol588>3.0.co;2-h.

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4

Sonzogni, Yann, Ariel Provost, and Pierre Schiano. "Transcrystalline melt migration in clinopyroxene." Contributions to Mineralogy and Petrology 161, no. 3 (July 7, 2010): 497–510. http://dx.doi.org/10.1007/s00410-010-0545-8.

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5

Wang, Shiwei, Yuting Leng, Guangan Zhang, Ruonan Wang, Shuaijiang Ma, and Qian Li. "Morphology design of isotactic polypropylene composites." Journal of Thermoplastic Composite Materials 31, no. 9 (October 23, 2017): 1252–62. http://dx.doi.org/10.1177/0892705717734907.

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In this article, the high-performance polymer composites were prepared based on the morphology designing method. To begin with, the beta transcrystalline morphology in the interfacial region of isotactic polypropylene (iPP) composites supported by single carbon fiber was formed by the induction of beta nucleating agent (NA) and verified using the polarized light microscopy. Then, to further explore the application of the beta transcrystalline morphology, the way of induction by supported NA was introduced into the iPP injection-molded samples. The result showed that a certain number of interfacial beta transcrystallinity was formed in the adjacent region of carbon nanotubes–modified iPP injection-molded samples. Herein, the mechanical properties are closely related to the interfacial beta transcrystalline morphology, the convective evidence was the improvement of the sample’s impact strength by seven times. Therefore, this work gives a new perspective for the preparation of high-performance composites materials via morphology designing.
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6

Klein, N., and G. Marom. "Surface Induced Crystallization in Fibre Reinforced Nylon 6,6 Composites." Advanced Composites Letters 1, no. 4 (July 1992): 096369359200100. http://dx.doi.org/10.1177/096369359200100401.

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The present study deals with the growth of transcrystalline layer in Nylon 6,6 reinforced with HM pitch based carbon or aramid fibres. The kinetics of transcrystalline growth is investigated quantitatively. The surface energy parameters that are derived here, can be used to define a better criterion for the nucleation of transcrystallinity from the fibre surface. The free energy difference function, Δσ, as it appears in the classical theory of heterogeneous nucleation is calculated for both aramid and HM carbon fibres.
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7

Fernández, M. R., J. C. Merino, M. I. Gobernado-Mitre, and J. M. Pastor. "Molecular and Lamellar Orientation of α- and β-Transcrystalline Layers in Polypropylene Composites by Polarized Confocal Micro-Raman Spectroscopy: Raman Imaging by Static Point Illumination." Applied Spectroscopy 54, no. 8 (August 2000): 1105–13. http://dx.doi.org/10.1366/0003702001950724.

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Crystallization of isotactic polypropylene (iPP) from the melt in the presence of poly(ethyleneterephthalate) (PET) fibers has been shown to produce preferential nucleation at the fiber surfaces leading to formation of columnar or transcrystalline growth. The crystalline development of PP has been examined by using optical microscopy. Polarized confocal micro-Raman spectroscopy was carried out to investigate the qualitative molecular orientation of alpha and beta transcrystalline regions around PET fibers embedded in a PP matrix. Uncoated PET fibers generate alpha transcrystallinity (α-TC) due to its strong α-nucleation ability. By coating the reinforcing PET fibers with the appropriate nucleating agent, one induces beta transcrystallinity (β-TC) in the PET fiber-reinforced iPP composites. α-TC layers have been also observed with the use of PET sheets as nucleating substrates. The spectroscopic results reveal that lamellar orientation in alpha transcrystalline structures differs significantly from the beta form. Furthermore, two different molecular orientations in the α-TC have been detected.
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8

Levitus, D., S. Kenig, M. Kazanci, H. Harel, and G. Marom. "The Effect of Transcrystalline Interface on the Mechanical Properties of Polyethylene / Polyethylene Composites." Advanced Composites Letters 10, no. 2 (March 2001): 096369350101000. http://dx.doi.org/10.1177/096369350101000202.

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The effect of the transcrystalline layer on the longitudinal properties of unidirectional polyethylene/polyethylene (PE/PE) composites was studied. Two sets of PE/PE composites were prepared by quenching and by isothermal crystallisation, respectively, using a wide range of fibre volume fractions. Quenching and isothermal crystallisation were expected, respectively, to prevent or to induce generation of a highly ordered transcrystalline layer. The experimental results showed that isothermal crystallisation produced a substantial positive effect on both the longitudinal strength and modulus, which was attributed to transcrystallinity.
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9

Schiano, P., A. Provost, R. Clocchiatti, and F. Faure. "Transcrystalline Melt Migration and Earth's Mantle." Science 314, no. 5801 (November 10, 2006): 970–74. http://dx.doi.org/10.1126/science.1132485.

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10

Barber, A. "Crack deflection at a transcrystalline junction." Composites Science and Technology 62, no. 15 (November 2002): 1957–64. http://dx.doi.org/10.1016/s0266-3538(02)00112-4.

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11

Ninomiya, Naoya, Kensuke Kato, Atsuhiro Fujimori, and Toru Masuko. "Transcrystalline structures of poly(l-lactide)." Polymer 48, no. 16 (July 2007): 4874–82. http://dx.doi.org/10.1016/j.polymer.2007.06.012.

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12

Meshcheryakov Yu. I., Divakov A. K., Zhigacheva N. I., Konovalov G. V., and Nechunaev A. F. "Micro-mechanismof multiscale dynamic fracture." Technical Physics Letters 48, no. 5 (2022): 57. http://dx.doi.org/10.21883/tpl.2022.05.53483.19163.

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The shock propagation in non-uniform medium is studied theoretically and experimentally. A set of experiments on shock loading of high-strength low-alloyed AB2 steel is performed. The "trigger" mechanism for switching the dynamic fracture from one scale to another is shown to be the resonance interaction of plastic flow oscillations and mesoscopic structural elements. There is a threshold strain rate at which the defect (decrease) of mass velocity at the plateau of compressive pulse increases abruptly. Under strain rates higher threshold value, a multitude of short transcrystalline cracks is formed, which results in decay of shock wave. Keywords: Shock loading, multiscale fracture, transcrystalline cracks.
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13

Sang, Lin, YuKai Wang, Guangyi Chen, Jicai Liang, and Zhiyong Wei. "A comparative study of the crystalline structure and mechanical properties of carbon fiber/polyamide 6 composites enhanced with/without silane treatment." RSC Advances 6, no. 109 (2016): 107739–47. http://dx.doi.org/10.1039/c6ra18394h.

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14

Strnadel, B., and K. Mazanec. "Low temperature transcrystalline failure in spheroidized steels." Acta Metallurgica et Materialia 39, no. 10 (October 1991): 2461–68. http://dx.doi.org/10.1016/0956-7151(91)90025-v.

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15

Feldman, A. Y., E. Wachtel, G. B. M. Vaughan, A. Weinberg, and G. Marom. "The Brill Transition in Transcrystalline Nylon-66." Macromolecules 39, no. 13 (June 2006): 4455–59. http://dx.doi.org/10.1021/ma060487h.

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16

Ton-That, T. M., and B. J. Jungnickel. "Water diffusion into transcrystalline layers on polypropylene." Journal of Applied Polymer Science 74, no. 13 (December 20, 1999): 3275–85. http://dx.doi.org/10.1002/(sici)1097-4628(19991220)74:13<3275::aid-app31>3.0.co;2-2.

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17

Stern, T., E. Wachtel, and G. Marom. "Epitaxy and lamellar twisting in transcrystalline polyethylene." Journal of Polymer Science Part B: Polymer Physics 35, no. 15 (November 15, 1997): 2429–33. http://dx.doi.org/10.1002/(sici)1099-0488(19971115)35:15<2429::aid-polb5>3.0.co;2-o.

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18

Jing, Mengfan, Hong Jiang, Yilan Guo, Zhiqiang Wu, and Qiang Fu. "Transcrystallization of poly(l-lactic acid) on the surface of reduced graphene oxide fibers." RSC Advances 6, no. 102 (2016): 100090–97. http://dx.doi.org/10.1039/c6ra18762e.

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Transcrystalline layer could form between rGOF and PLLA. The good nucleating ability of rGOF could be quantitatively characterized based on the theories of heterogeneous nucleation and crystal growth rate.
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19

Bek, Marko, Alexandra Aulova, Klementina Pušnik Črešnar, Sebastjan Matkovič, Mitjan Kalin, and Lidija Slemenik Perše. "Long-Term Creep Compliance of Wood Polymer Composites: Using Untreated Wood Fibers as a Filler in Recycled and Neat Polypropylene Matrix." Polymers 14, no. 13 (June 22, 2022): 2539. http://dx.doi.org/10.3390/polym14132539.

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Neat (NPP) and recycled (RPP) polypropylene matrix materials were used to prepare wood–polymer composites with untreated wood fibers up to 40 wt.%. Long-term creep properties obtained through the time-temperature superposition showed superior creep resistance of composites with NPP matrix. In part, this is attributed to their higher crystallinity and better interfacial adhesion caused by the formation of a transcrystalline layer. This difference resulted in up to 25% creep compliance reduction of composites with NPP matrix compared to composites with recycled (RPP) polypropylene matrix, which does not form a transcrystalline layer between the fibers and polymer matrix. Despite the overall inferior creep performance of composites with RPP matrix, from the 20 wt.% on, the creep compliance is comparable and even surpasses the creep performance of unfilled NPP matrix and can be a promising way to promote sustainability.
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20

Ratner, Stanislav, P. Mona Moret, Ellen Wachtel, and Gad Marom. "New Insights into Lamellar Twisting in Transcrystalline Polyethylene." Macromolecular Chemistry and Physics 206, no. 12 (June 16, 2005): 1183–89. http://dx.doi.org/10.1002/macp.200400475.

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21

Li, Zhen, Yunjie Shi, Huili Liu, Feng Chen, Qin Zhang, Ke Wang, and Qiang Fu. "Effect of melting temperature on interfacial interaction and mechanical properties of polypropylene (PP) fiber reinforced olefin block copolymers (OBCs)." RSC Adv. 4, no. 85 (2014): 45234–43. http://dx.doi.org/10.1039/c4ra06548d.

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Transcrystalline structures for the first time were observed at the interface of OBC/PP fiber, proving that the partially melted (170 °C) and totally melted (190 °C) PP fibers have stronger interactions with OBC than unmelted PP fibers does.
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22

Vereshchagin, V. I., M. A. Sergeev, Yu V. Borodin, and O. G. Shevelev. "Computer simulation of microcomposite ceramics with high transcrystalline mobility." Refractories and Industrial Ceramics 40, no. 9-10 (September 1999): 429–32. http://dx.doi.org/10.1007/bf02764195.

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23

Wagner, H. D., A. Lustiger, C. N. Marzinsky, and R. R. Mueller. "Interlamellar failure at transcrystalline interfaces in glass/polypropylene composites." Composites Science and Technology 48, no. 1-4 (January 1993): 181–84. http://dx.doi.org/10.1016/0266-3538(93)90134-3.

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24

Huang, Y., and J. Petermann. "Transcrystalline growth of thermoplastics and LCPs during isothermal crystallization." Journal of Applied Polymer Science 55, no. 7 (February 14, 1995): 981–87. http://dx.doi.org/10.1002/app.1995.070550702.

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25

Huang, Y., and J. Petermann. "Interface layers of fiber reinforced composites with transcrystalline morphology." Polymer Bulletin 36, no. 4 (April 1996): 517–24. http://dx.doi.org/10.1007/bf00315072.

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26

Chen, Eric J. H., and Benjamin S. Hsiao. "The effects of transcrystalline interphase in advanced polymer composites." Polymer Engineering and Science 32, no. 4 (February 1992): 280–86. http://dx.doi.org/10.1002/pen.760320408.

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27

Karger-Kocsis, J. "Interphase with Lamellar Interlocking and Amorphous Adherent – a Model to Explain Effects of Transcrystallinity." Advanced Composites Letters 9, no. 3 (May 2000): 096369350000900. http://dx.doi.org/10.1177/096369350000900307.

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An interphase model emphasising the lamellar architecture and the role of the amorphous phase is proposed to explain possible effects of the transcrystalline layer in composites consisting of semicrystalline polymer and fibres acting heterogeneous nucleants therein. Based on this model biased findings reported on the effects of transcrystallinity can be rationalised.
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28

Zafeiropoulos, N. E., C. A. Baillie, and F. L. Matthews. "The Effect of Transcrystallinity on the Interface of Green Flax/Polypropylene Composite Materials." Advanced Composites Letters 10, no. 5 (September 2001): 096369350101000. http://dx.doi.org/10.1177/096369350101000503.

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In recent years there has been an increasing interest in using natural fibres as potential reinforcements for polymers. The introduction of fibres such as flax in a semicrystalline thermoplastic matrix such as iPP (isotactic polypropylene) has been shown to lead to the development of transcrystallinity. The presence of an anisotropic layer such as transcrystallinity in the composite material may in turn have a profound effect on the mechanical behaviour of the interface. In this study the role of transcrystallinity has been investigated in green flax (that is flax as received direct from the crops)/iPP by means of the fragmentation test. The results are discussed in terms of previously reported results for treated flax fibres (dew retted)/iPP. Transcrystallinity leads to a stronger interface in green flax/iPP, and its thickness affects the interfacial strength, with thinner transcrystalline layers giving a stronger interface. An examination of the mode of failure at the interface after the fragmentation test also supports the conclusion that the transcrystalline interface is stronger than the spherulitic interface in green flax/iPP composites.
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29

Rozumek, Dariusz, and Ewald Macha. "Fatigue Crack Growth in Titanium and Aluminium Alloys under Bending." Materials Science Forum 567-568 (December 2007): 317–20. http://dx.doi.org/10.4028/www.scientific.net/msf.567-568.317.

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The paper contains results of investigations of the crack growth in plane specimens made of Ti-6Al-4V titanium alloy and AlCu4Mg1 aluminium alloy under cyclic bending. The tests were done on specimens with the stress concentrators being one-sided sharp notch. On the fractures there have been observed first of all transcrystalline cracks through the α phase grains for both materials.
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30

Gati, A., and H. D. Wagner. "Stress Transfer Efficiency in Semicrystalline-Based Composites Comprising Transcrystalline Interlayers." Macromolecules 30, no. 13 (June 1997): 3933–35. http://dx.doi.org/10.1021/ma961027z.

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31

Hata, T., K. Ohsaka, T. Yamada, K. Nakamae, N. Shibata, and T. Matsumoto. "Transcrystalline Region of Polypropylene: Its Formation, Structure and Mechanical Properties." Journal of Adhesion 45, no. 1-4 (September 1994): 125–35. http://dx.doi.org/10.1080/00218469408026633.

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32

Lustiger, A., C. N. Marzinsky, R. R. Mueller, and H. D. Wagner. "Morphology and Damage Mechanisms of the Transcrystalline Interphase in Polypropylene." Journal of Adhesion 53, no. 1-2 (September 1995): 1–14. http://dx.doi.org/10.1080/00218469508014368.

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33

Folkes, M. J., and S. T. Hardwick. "Direct study of the structure and properties of transcrystalline layers." Journal of Materials Science Letters 6, no. 6 (June 1987): 656–58. http://dx.doi.org/10.1007/bf01770916.

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34

Dasari, Aravind, Zhong-Zhen Yu, and Yiu-Wing Mai. "Transcrystalline Regions in the Vicinity of Nanofillers in Polyamide-6." Macromolecules 40, no. 1 (January 2007): 123–30. http://dx.doi.org/10.1021/ma0621122.

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35

Amitay-Sadovsky, Ella, Sidney R. Cohen, and H. Daniel Wagner. "Nanoscale Shear and Indentation Measurements in Transcrystalline α-Isotactic Polypropylene." Macromolecules 34, no. 5 (February 2001): 1252–57. http://dx.doi.org/10.1021/ma001193d.

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36

Ivanov, Yury F., Oleg L. Khasanov, Valentina V. Polisadova, Мaria S. Petukevich, Tamara V. Milovanova, Anton D. Teresov, Zulfa G. Bikbaeva, Mark P. Kalashnikov, and Anastasia Bratukhina. "The Analysis of the Mechanisms for Plasticization of Boron Carbide Ceramics Irradiated by an Intense Electron Beam." Key Engineering Materials 685 (February 2016): 700–704. http://dx.doi.org/10.4028/www.scientific.net/kem.685.700.

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Is has been shown that irradiation of the sintered ceramics on the basis of boron carbide with an intense pulsed electron beam leads to formation of non-porous polycrystalline structure. The specific elements of a sub-grain structure of the irradiated ceramics are micro-twins. It has been determined that the main failure mechanism of the sintered ceramics is an intercrystalline fracture. The irradiation of ceramics has led to mainly transcrystalline fracture.
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37

Assouline, E., E. Wachtel, S. Grigull, A. Lustiger, H. D. Wagner, and G. Marom. "Lamellar Orientation in Transcrystalline γ Isotactic Polypropylene Nucleated on Aramid Fibers." Macromolecules 35, no. 2 (January 2002): 403–9. http://dx.doi.org/10.1021/ma0114133.

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38

Sanadi, A. R., and D. F. Caulfield. "Transcrystalline interphases in natural fiber-PP composites: effect of coupling agent." Composite Interfaces 7, no. 1 (January 2000): 31–43. http://dx.doi.org/10.1163/156855400300183560.

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39

Pompe, G., and E. Mäder. "Experimental detection of a transcrystalline interphase in glass-fibre/polypropylene composites." Composites Science and Technology 60, no. 11 (August 2000): 2159–67. http://dx.doi.org/10.1016/s0266-3538(00)00120-2.

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40

Felix, J. M., and P. Gatenholm. "Effect of transcrystalline morphology on interfacial adhesion in cellulose/polypropylene composites." Journal of Materials Science 29, no. 11 (1994): 3043–49. http://dx.doi.org/10.1007/bf01117618.

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41

Margolin, BZ, GP Karzov, VA Shvetsova, and VI Kostylev. "MODELLING FOR TRANSCRYSTALLINE AND INTERCRYSTALLINE FRACTURE BY VOID NUCLEATION AND GROWTH." Fatigue & Fracture of Engineering Materials & Structures 21, no. 2 (February 1998): 123–37. http://dx.doi.org/10.1046/j.1460-2695.1998.00474.x.

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42

Shi, HF, Y. Zhao, X. Dong, CC He, DJ Wang, and DF Xu. "Transcrystalline morphology of nylon 6 on the surface of aramid fibers." Polymer International 53, no. 11 (September 28, 2004): 1672–76. http://dx.doi.org/10.1002/pi.1501.

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43

Wang, J., D. Rychkov, Q. D. Nguyen, and R. Gerhard. "Unexpected bipolar space-charge polarization across transcrystalline interfaces in polypropylene electret films." Journal of Applied Physics 128, no. 13 (October 7, 2020): 134103. http://dx.doi.org/10.1063/5.0022071.

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44

Stern, T., A. Teishev, and G. Marom. "Composites of polyethylene reinforced with chopped polyethylene fibers: Effect of transcrystalline interphase." Composites Science and Technology 57, no. 8 (1997): 1009–15. http://dx.doi.org/10.1016/s0266-3538(96)00128-5.

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45

Zhang, Kailin, Rui Han, Min Nie, and Qi Wang. "Polymorphic Effect of Transcrystalline Layer on Interfacial Strength of Polypropylene/Polyamide Blend." Industrial & Engineering Chemistry Research 58, no. 49 (November 15, 2019): 22283–89. http://dx.doi.org/10.1021/acs.iecr.9b05027.

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46

Saujanya, C., and S. Radhakrishnan. "Development of a Transcrystalline Phase in Poly(propylene) at the PET Interface." Macromolecular Materials and Engineering 286, no. 1 (January 1, 2001): 1–4. http://dx.doi.org/10.1002/1439-2054(20010101)286:1<1::aid-mame1>3.0.co;2-u.

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47

Amitay-Sadovsky, Ella, and H. Daniel Wagner. "Hardness and Young's modulus of transcrystalline polypropylene by Vickers and Knoop microindentation." Journal of Polymer Science Part B: Polymer Physics 37, no. 6 (March 15, 1999): 523–30. http://dx.doi.org/10.1002/(sici)1099-0488(19990315)37:6<523::aid-polb4>3.0.co;2-2.

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48

Luo, Jun Ting, Qing Zhang, and Kai Feng Zhang. "Flexural Strength of Superfine Grained Si2N2O-Si3N4 Composites." Key Engineering Materials 353-358 (September 2007): 1477–80. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1477.

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The Si3N4- Si2N2O composites were fabricated with amorphous nano-sized silicon nitride powders by the liquid phase sintering(LPS) method. The sintering temperatures ranged from 1500°C to 1700°C. Microstructure and component of the composites were performed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Results show that sintered body consists of Si2N2O and β-Si3N4, with an average grain size about 1μm. The maximum value of flexural strength of the material is 680MPa when sintered at 1700°C. Transcrystalline cracking is the main fracture mechanism of the composites.
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49

Volgina, Natalya I., Aleksander V. Shulgin, and Svetlana S. Khlamkova. "Confirmation of Hydrogen Embrittlement Mechanism for Stress Corrosion Cracking of Gas Main Lines." Defect and Diffusion Forum 410 (August 17, 2021): 572–77. http://dx.doi.org/10.4028/www.scientific.net/ddf.410.572.

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The nature and mechanism of stress corrosion cracking have been studied and modeled in laboratory conditions. It was established that the destruction process develops in three stages: the formation of corrosion defects on the pipe surface, birth and subcritical growth of stress-corrosion cracks, and break. Release bands observed in focal fracture at subcritical crack growth stage indicate that fluctuating stresses are involved in the destruction development. Transcrystalline nature of the fracture at subcritical growth stage implies that SCC in pipelines develops in consonance with the hydrogen embrittlement mechanism.
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50

Juríková, Alena, Kornel Csach, Jozef Miškuf, Mária Huráková, Elena D. Tabachnikova, and Aleksey V. Podolskiy. "Deformation and Failure of Ultrafine-Grained Cu at Subambient Temperature." Materials Science Forum 891 (March 2017): 249–53. http://dx.doi.org/10.4028/www.scientific.net/msf.891.249.

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The ultrafine-grained copper was obtained by 12 passes of equal-channel angular pressing method. The uniaxial tensile tests at room temperature and the subambient temperature of 77 K show that the yield stress increases from the value of 128 MPa to the value of 138 MPa, respectively. In addition, the lowering the test temperature tends to the increase of the deformation before the failure. The fractographic analysis shows the transcrystalline ductile failure for all samples. Due to the high plasticity of nanostructured copper no influence of the nanoporosity on the failure process was observed.
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