New class of plastic bulk metallic glass

被引：193

作者：

Chen, L. Y. ^{[1
,2
]}

Fu, Z. D. ^{[3
]}

Zhang, G. Q. ^{[1
,2
,4
]}

Hao, X. P. ^{[5
]}

Jiang, Q. K. ^{[1
,2
]}

Wang, X. D. ^{[1
,2
]}

Cao, Q. P. ^{[1
,2
]}

Franz, H. ^{[6
]}

Liu, Y. G. ^{[7
]}

Xie, H. S. ^{[7
]}

Zhang, S. L. ^{[3
]}

Wang, B. Y. ^{[5
]}

Zeng, Y. W. ^{[1
,2
]}

Jiang, J. Z. ^{[1
,2
]}

机构：

[1] Zhejiang Univ, ICNSM, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Lab New Struct Mat, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China

[3] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[4] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Mfg, Hangzhou 310018, Peoples R China

[5] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[6] DESY, HASYLAB, D-22603 Hamburg, Germany

[7] Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 07期

关键词：

ZR; DUCTILITY;

D O I：

10.1103/PhysRevLett.100.075501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An intrinsic plastic Cu45Zr46Al7Ti2 bulk metallic glass (BMG) with high strength and superior compressive plastic strain of up to 32.5% was successfully fabricated by copper mold casting. The superior compressive plastic strain was attributed to a large amount of randomly distributed free volume induced by Ti minor alloying, which results in extensive shear band formation, branching, interaction and self-healing of minor cracks. The mechanism of plasticity presented here suggests that the creation of a large amount of free volume in BMGs by minor alloying or other methods might be a promising new way to enhance the plasticity of BMGs.

引用

页数：4

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