Ambient temperature embrittlement of a Zr-based bulk metallic glass

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:549

Article

Jiang, F.¹  Wang, H. F.¹  Jiang, M. Q.²  Li, G.¹  Zhao, Y. L.¹  He, L.¹  Sun, J.¹ 

[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

[2] Chinese Acad Sci, Inst Mech, State Kay Lab Nonlinear Mech, Beijing 100190, Peoples R China

关键词: Bulk metallic glass;    Strength;    Plastic deformation ability;    Ambient temperature;    Embrittlement;   

DOI  :  10.1016/j.msea.2012.03.109

来源: Elsevier

【 摘 要 】

Three-point bending experiments were performed on Zr52.5Cu17.9Ni14.6Al10Ti5 (Vit105) bulk metallic glass (BMGs) over a wide range of ambient temperatures varying from the liquid nitrogen temperature (77 K) to about boiling water temperature (370 K). The results demonstrated that the flexural strength of the Zr-based BMG monotonously increased with decreasing of test temperature, whereas plastic deformation ability displayed a maximum at a moderate temperature (about room temperature). That is, the plastic deformation ability was deteriorated by either higher or lower temperature than room temperature through affecting shear band nucleation and propagation within materials respectively. (C) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

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