Excellent glass former Ni<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.svg"><mml:msub><mml:mrow /><mml:mn>62</mml:mn></mml:msub></mml:math>Nb<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si3.svg"><mml:msub><mml:mrow /><mml:mn>38</mml:mn></mml:msub></mml:math> crystallizing under combined shear and ultra-high pressure
نویسندگان
چکیده
Study of condensed matter in certain extreme conditions allows one to better understand the mechanisms microscopic structural transformations and develop materials with completely new mechanical properties. In present work, we study structure crystallization kinetics bulk metallic glass (BMG) Ni62Nb38. We show that this BMG is rapidly crystallized under combined effect shear deformation ultrahigh pressure. A threshold pressure required initiate formation a stable crystalline phase revealed. Shear lead separation: two high-density inhomogeneous crystal structures are formed. find occurs stages due significant difference growth rates Ni Nb phases. The results make contribution understanding amorphization features Ni-based BMG’s.
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ژورنال
عنوان ژورنال: Journal of Non-crystalline Solids
سال: 2021
ISSN: ['1873-4812', '0022-3093']
DOI: https://doi.org/10.1016/j.jnoncrysol.2021.121102