Investigation on the fracture Behavior of shape memory alloy NiTi

	Investigation on the fracture Behavior of shape memory alloy NiTi
	Chen, JH; Sun, W; Wang, GZ
	2005-04
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN	1073-5623
卷号	36A 期号:4 页码:941-955
摘要	This work investigates the fracture behavior of shape memory alloy NiTi (50.7 at. pct Ni) at room temperature. Macroscopic mechanical tests, microscopic in situ observations of tensile fracture processes by scanning, electron microscopy (SEM), and detailed analyses of fracture Surfaces were carried out. The results reveal that specimens with different thicknesses show various shape memory effects and superelasticities. The main crack with a quasi-cleavage mode that combines cleavage with ductile tearing is initiated at the notch tip and is stress-control-propagated in line with the direction of the C maximum normal stress. The microstructure has little effect on the direction of crack propagation, but coarser Substructures show lower resistance to the crack propagation. In specimens with various types of notches, various notch acuities present different effects on the crack initiation and propagation and result in different fracture behaviors.
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000227914900006
出版者	MINERALS METALS MATERIALS SOC
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/35784
专题	材料科学与工程学院_特聘教授组
通讯作者	Chen, JH
作者单位	Lanzhou Univ Technol, Key State Lab New Mat Nonferrous Alloys, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Chen, JH,Sun, W,Wang, GZ. Investigation on the fracture Behavior of shape memory alloy NiTi[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2005,36A(4):941-955.
APA	Chen, JH,Sun, W,&Wang, GZ.(2005).Investigation on the fracture Behavior of shape memory alloy NiTi.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,36A(4),941-955.
MLA	Chen, JH,et al."Investigation on the fracture Behavior of shape memory alloy NiTi".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 36A.4(2005):941-955.

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