Effect of annealing on the mechanical properties and fracture mechanisms of a Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 bulk-metallic-glass composite

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	Effect of annealing on the mechanical properties and fracture mechanisms of a Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 bulk-metallic-glass composite
	F. F. Wu; Z. F. Zhang; S. X. Mao; A. Peker; J. Eckert
	2007
发表期刊	Physical Review B
ISSN	1098-0121
卷号	75 期号:13
摘要	The effect of annealing on the mechanical properties and fracture mechanisms of a Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 bulk-metallic-glass (BMG) composite subjected to tension and compression was investigated. When the BMG composite was annealed at high temperature, its mechanical properties changed greatly no matter whether tested under tension or compression. Under tensile loading, the as-cast specimen and the specimen annealed at 573 K failed in a shear mode with certain plasticity, but the specimens annealed at 593 K, 623 K, and 693 K for 1 h are very brittle and always failed in mode I fracture. Under compressive loading, however, all specimens failed in a shear mode with a fracture angle smaller than 45 degrees and the corresponding plasticity decreased with increasing the annealing temperature. Therefore, significant asymmetry phenomena between the failure mode, the fracture strength, and the plasticity are found in the BMG composite annealed at different temperatures. Based on the experimental results available, we propose that the ratio of the intrinsic shear strength to the cleavage strength is a substantial parameter controlling not only the strength asymmetry, but also the failure mode and the plastic deformation in the BMG composite.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. univ pittsburgh, dept engn mech, pittsburgh, pa 15261 usa. liquidmetal technol inc, lake forest, il usa. th darmstadt, dept mat & geo sci, div phys met, d-64287 darmstadt, germany.;zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn
关键词	Amorphous-alloys Deformation-behavior Matrix Composites Enhanced Plasticity Strength Asymmetry Yield Criterion Particles Tungsten Temperatures
URL	查看原文
WOS记录号	WOS:000246074800030
引用统计	被引频次：73[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33906
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. F. Wu,Z. F. Zhang,S. X. Mao,et al. Effect of annealing on the mechanical properties and fracture mechanisms of a Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 bulk-metallic-glass composite[J]. Physical Review B,2007,75(13).
APA	F. F. Wu,Z. F. Zhang,S. X. Mao,A. Peker,&J. Eckert.(2007).Effect of annealing on the mechanical properties and fracture mechanisms of a Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 bulk-metallic-glass composite.Physical Review B,75(13).
MLA	F. F. Wu,et al."Effect of annealing on the mechanical properties and fracture mechanisms of a Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 bulk-metallic-glass composite".Physical Review B 75.13(2007).