TY - JOUR
T1 - Effects of Al replacement on glass forming ability and mechanical properties of Zr-based bulk metallic glasses
AU - Tan, Y.
AU - Wang, Y. W.
AU - Cheng, X. W.
AU - Fu, Q.
AU - Xin, Z. H.
AU - Xu, Z. Q.
AU - Cheng, H. W.
N1 - Publisher Copyright:
© 2021
PY - 2021/9/15
Y1 - 2021/9/15
N2 - In this present study, the effects of Al substitution for Zr in Zr73-xCu12Ni12AlxNb3 (x=7.5, 10, 12.5, 15, 17.5 at.%) metallic glasses on the glass-forming ability, thermal stability, quasi-static and dynamic mechanical properties were investigated. Proper Al replacement improved the glass-forming ability, crystallization activation energy and mechanical properties of the amorphous alloys. Compared with quasi-static compression, due to the shorter loading time and more significant adiabatic temperature rise, the fracture strength decreased and no dynamic compression plasticity was observed for all alloys subjected to dynamic loading. From the aspect of atomic structure, the substitution of appropriate amount of Al not only promoted the formation of the stable short-range ordering (SRO) structure, but also changed the content and distribution of the free volume, which resulted in the improvement of GFA, strength and plasticity of the amorphous alloy.
AB - In this present study, the effects of Al substitution for Zr in Zr73-xCu12Ni12AlxNb3 (x=7.5, 10, 12.5, 15, 17.5 at.%) metallic glasses on the glass-forming ability, thermal stability, quasi-static and dynamic mechanical properties were investigated. Proper Al replacement improved the glass-forming ability, crystallization activation energy and mechanical properties of the amorphous alloys. Compared with quasi-static compression, due to the shorter loading time and more significant adiabatic temperature rise, the fracture strength decreased and no dynamic compression plasticity was observed for all alloys subjected to dynamic loading. From the aspect of atomic structure, the substitution of appropriate amount of Al not only promoted the formation of the stable short-range ordering (SRO) structure, but also changed the content and distribution of the free volume, which resulted in the improvement of GFA, strength and plasticity of the amorphous alloy.
KW - Free volume
KW - Glass forming ability
KW - Mechanical properties
KW - Zr-based bulk metallic glass
UR - http://www.scopus.com/inward/record.url?scp=85108696448&partnerID=8YFLogxK
U2 - 10.1016/j.jnoncrysol.2021.120962
DO - 10.1016/j.jnoncrysol.2021.120962
M3 - Article
AN - SCOPUS:85108696448
SN - 0022-3093
VL - 568
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
M1 - 120962
ER -