Fracture behaviour of a TiAl alloy under various loading modes

doi:10.1016/j.engfracmech.2008.01.013

	Fracture behaviour of a TiAl alloy under various loading modes
	Cao, R.1,2 ; Lin, Y. Z.2; Hu, D.3; Chen, J. H.1,2
	2008-10
发表期刊	ENGINEERING FRACTURE MECHANICS
ISSN	0013-7944
卷号	75 期号:15 页码:4343-4362
摘要	Tensile tests, compression tests, in situ tensile tests, bending tests, tensile fatigue tests and bending fatigue tests were carried out for a TiAl alloy. Based oil the global experimental results and microscopic observations of the fracture surfaces and cracking behaviour oil the side Surfaces of tested specimens, the fracture mechanisms of fully lamellar (FL) TiAl alloys under various loading modes are Summarized as following: (1) Cracks initiate at grain boundaries and/or interfaces between lamellae. (2) When a crack extends to a critical length, which matches the fracture loading stress the crack propagates catastrophically through entire specimen. (3) The crack with the critical length can be produced promptly by the applied load in the tensile and bending test or be produced step-by-step by a much lower load in the fatigue tensile test. (4) For fatigue bending tests, the fatigue crack initiates and extends directly from the notch root, then extends step-by-step with increasing the fatigue bending loads. The fatigue crack maybe extends through entire specimen at a lower fatigue load or triggers the cleavage through the whole specimen at a higher load. (5) In compressive tests, cracks initiate and propagate in directions parallel or inclined to the compressive load after producing appreciable plastic strains. The specimen call be fractured by the propagation of cracks in both directions. (C) 2008 Published by Elsevier Ltd.
关键词	TiAl alloys fracture mechanisms in situ tensile test fatigue compression
DOI	10.1016/j.engfracmech.2008.01.013
收录类别	SCI ; SCIE
语种	英语
资助项目	Gansu Advanced Non-ferrous Metal Materials[SKL04003]
WOS研究方向	Mechanics
WOS类目	Mechanics
WOS记录号	WOS:000259059900005
出版者	PERGAMON-ELSEVIER SCIENCE LTD
EI入藏号	20083011400044
EI主题词	Fatigue of materials
EI分类号	422 Strength of Building Materials ; Test Equipment and Methods - 541.1 Aluminum - 541.2 Aluminum Alloys - 542.3 Titanium and Alloys - 951 Materials Science
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/35459
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Chen, J. H.
作者单位	1.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Minist Educ, Key Lab Nonferrous Met Alloys, Lanzhou 730050, Peoples R China 3.Univ Birmingham, Interdisciplinary Res Ctr Mat, Birmingham B15 2TT, W Midlands, England
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Cao, R.,Lin, Y. Z.,Hu, D.,et al. Fracture behaviour of a TiAl alloy under various loading modes[J]. ENGINEERING FRACTURE MECHANICS,2008,75(15):4343-4362.
APA	Cao, R.,Lin, Y. Z.,Hu, D.,&Chen, J. H..(2008).Fracture behaviour of a TiAl alloy under various loading modes.ENGINEERING FRACTURE MECHANICS,75(15),4343-4362.
MLA	Cao, R.,et al."Fracture behaviour of a TiAl alloy under various loading modes".ENGINEERING FRACTURE MECHANICS 75.15(2008):4343-4362.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Cao-2008-Fracture be（4191KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载