Tension-compression mechanical behavior and corresponding microstructure evolution of cast A356-T6 aluminum alloy

doi:10.1016/j.msea.2021.141613

IMR OpenIR

	Tension-compression mechanical behavior and corresponding microstructure evolution of cast A356-T6 aluminum alloy
	Yang, Baocheng 1,2; Song, Hongwu 1; Wang, Songwei 1; Chen, Shuaifeng 1; Zhang, Shihong 1
通讯作者	Song, Hongwu(hwsong@imr.ac.cn)
	2021-07-21
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	821 页码:11
摘要	It is crucial to clarify the intrinsic deformation and damage behaviors of casting materials under different loading conditions for establishing the material damage model and accurately predicting the security performance of cast components. In this study, uniaxial tensile and compressive tests were performed to investigate the complete mechanical behavior of cast A356-T6 aluminum alloy at room temperature, and the corresponding microstructure evolution were analyzed. The tensile and compressive specimens were prepared at porosity-free locations on a low pressure die cast A356 wheel subjected to T6 heat treatment to avoid premature fracture caused by initial cast pores. The results show that negligible asymmetry in yielding and hardening behaviors is observed between tension and compression, but obvious differences in ductility exhibit. Specifically, the elongation for tension is limited to 15%, but reaches over a strain of 1.2 for compression. Additionally, microcracks during tension are prone to be initiated at the interface between Si and Al matrix, which mainly propagates in the Al dendrites, and finally leads to the fracture. While the dominant strain accommodated mechanism shifts with strain levels in compression. It evolves from the incipient plastic deformation inside grains at initial strain stage to the sliding of fragmented dendrite assisted by eutectic silicon particles at later stage, which may be the main reason for the superior ductility during compression.
关键词	A356-T6 aluminum alloy Eutectic silicon Microstructure evolution Strain accommodation
资助者	National Natural Science Foundation of China ; Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1016/j.msea.2021.141613
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51875547] ; Institute of Metal Research, Chinese Academy of Sciences[E055A501]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000672444600002
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：28[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/321006/160093
专题	中国科学院金属研究所
通讯作者	Song, Hongwu
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yang, Baocheng,Song, Hongwu,Wang, Songwei,et al. Tension-compression mechanical behavior and corresponding microstructure evolution of cast A356-T6 aluminum alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,821:11.
APA	Yang, Baocheng,Song, Hongwu,Wang, Songwei,Chen, Shuaifeng,&Zhang, Shihong.(2021).Tension-compression mechanical behavior and corresponding microstructure evolution of cast A356-T6 aluminum alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,821,11.
MLA	Yang, Baocheng,et al."Tension-compression mechanical behavior and corresponding microstructure evolution of cast A356-T6 aluminum alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 821(2021):11.