Tensile deformation and fracture behaviors of high purity polycrystalline zinc

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	Tensile deformation and fracture behaviors of high purity polycrystalline zinc
	J. H. Liu ; C. X. Huang ; S. D. Wu ; Z. F. Zhang
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2008
卷号	490 期号:1-2 页码:117-125
关键词	zinc tension fracture cleavage cavity galvanized steel sheets single-crystals damage mechanisms superplasticity accommodation bicrystals coatings cleavage cracks creep
ISSN号	0921-5093
中文摘要	The damage and fracture behaviors of high purity polycrystalline zinc with two grain sizes during tension were investigated experimentally at different strain rates. It was found that specimens with coarse grains (similar to 1 mm) showed serrated flow behavior and failed in intermittent brittle cleavage fracture, while specimens with fine grains (similar to 70 mu m) showed no cleavage crack initiation before necking even at high strain rate. It was observed that the fracture process of the fine-grained specimen was highly related to strain rates. With the strain rate increasing, the damage mechanism transformed from formation of tearing cracks along interfaces (including grain boundaries, twin boundaries and kink band boundaries) and cavity coalescence into abrupt quasi-cleavage fracture. Based on the observation, the inter-crystalline fracture of zinc was investigated, and the damage and fracture behaviors of polycrystalline zinc during tension at room temperature were discussed in general. (c) 2008 Elsevier B.V. All rights reserved.
原文出处	://WOS:000258389200016
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32950]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	J. H. Liu,C. X. Huang,S. D. Wu,et al. Tensile deformation and fracture behaviors of high purity polycrystalline zinc[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008,490(1-2):117-125.
APA	J. H. Liu,C. X. Huang,S. D. Wu,&Z. F. Zhang.(2008).Tensile deformation and fracture behaviors of high purity polycrystalline zinc.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,490(1-2),117-125.
MLA	J. H. Liu,et al."Tensile deformation and fracture behaviors of high purity polycrystalline zinc".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 490.1-2(2008):117-125.