Investigation of fracture mechanism of 6063 aluminum alloy under different stress states

doi:10.1007/s10704-007-9158-2

	Investigation of fracture mechanism of 6063 aluminum alloy under different stress states
	Zhu, Hao 2; Zhu, Liang1,2 ; Chen, Jian-Hong1,2 ; Lv, Xian-Feng 2
	2007-08
发表期刊	INTERNATIONAL JOURNAL OF FRACTURE
ISSN	0376-9429
卷号	146 期号:3 页码:159-172
摘要	Fracture mechanisms in a 6063 aluminum alloy were investigated and analyzed carefully by in-situ tensile tests in SEM with a vacuum chamber. Specimens used were designed to produce different stress states. Studies indicated that with stress triaxiality (sigma(m)/sigma(e)) decreasing, the fracture modes changed from normal fracture to shear fracture and the fracture surfaces changed from the dimples and intragranular dominated fracture mode to the shear dominated fracture mode. The grain boundaries of the 6063 alurninum alloy were the weakest positions. In the case of high stress triaxiality, the grain boundary cracks were produced by normal stress or by the incompatibility of deformation between neighboring grains, and the normal stress dominated the crack propagation. In the case of low stress triaxiality, the boundary cracks were produced by the relative slipping of grains against neighboring grains, and the shear stress dominated the crack propagation. The final fracture of the specimens occurred by connections of cracks through transgranular cracking of the ligaments among these cracks.
关键词	6063 aluminum alloy in-situ tensile test fracture process fracture mechanism
DOI	10.1007/s10704-007-9158-2
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Materials Science ; Mechanics
WOS类目	Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:000251976500004
出版者	SPRINGER
EI入藏号	20075010973328
EI主题词	Aluminum alloys
EI分类号	422.2 Strength of Building Materials : Test Methods - 541.2 Aluminum Alloys - 951 Materials Science
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/35590
专题	材料科学与工程学院_特聘教授组材料科学与工程学院
通讯作者	Chen, Jian-Hong
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Coll Mat Sci & Engn, Lanzhou 730050, Peoples R China
第一作者单位	材料科学与工程学院
通讯作者单位	兰州理工大学; 材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Zhu, Hao,Zhu, Liang,Chen, Jian-Hong,et al. Investigation of fracture mechanism of 6063 aluminum alloy under different stress states[J]. INTERNATIONAL JOURNAL OF FRACTURE,2007,146(3):159-172.
APA	Zhu, Hao,Zhu, Liang,Chen, Jian-Hong,&Lv, Xian-Feng.(2007).Investigation of fracture mechanism of 6063 aluminum alloy under different stress states.INTERNATIONAL JOURNAL OF FRACTURE,146(3),159-172.
MLA	Zhu, Hao,et al."Investigation of fracture mechanism of 6063 aluminum alloy under different stress states".INTERNATIONAL JOURNAL OF FRACTURE 146.3(2007):159-172.