Suppressed negative influence of natural aging in SiCp/6092Al composites

doi:10.1016/j.msea.2019.138422

IMR OpenIR

	Suppressed negative influence of natural aging in SiCp/6092Al composites
	Zhu, S. Z.1,2; Ma, G. N.1,2; Wang, D.1; Xiao, B. L.1; Ma, Z. Y.1
通讯作者	Wang, D.(dongwang@imr.ac.cn) ; Xiao, B. L.(blxiao@imr.ac.cn)
	2019-11-08
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	767 页码:10
摘要	For most Al-Mg-Si-(Cu) alloys, precedent natural aging impairs hardening response during artificial aging. This phenomenon is called the negative influence of natural aging. In this study, effects of natural aging as an interlude on the mechanical properties of artificially aged SiCp/6092Al composite and 6092Al alloy were investigated using tension test, electrical conductivity test, differential scanning calorimetry and transmission electron microscopy. It was shown that the strength of both the composite and 6092Al alloy after artificial aging was decreased due to the precedent natural aging. Compared to 6092Al alloy, the composite had smaller strength decrement. However, qualitative analysis based on load transfer indicated that the negative influence of natural aging was stronger in the composite than in 6092Al alloy. Microstructure examinations showed that this conflict was caused by the different influence of natural aging on precipitation behaviors during artificial aging between the composite and 6092Al alloy. Compared to those in 6092Al alloy, not only was the cluster behavior during natural aging weaker, but also more NA clusters could become favorable nucleation sites for beta '' phases in the composite. Therefore, the coarsening of the precipitates caused by precedent natural aging was weaker in the composite than in 6092Al alloy. Furthermore, more metastable phases containing Cu, named L phases, existed in the composite than in 6092Al alloy, which could also be responsible for the suppressed negative influence of natural aging.
关键词	Aluminum matrix composite Al-Mg-Si-Cu alloys Natural aging Artificial aging Precipitates
资助者	National Key R&D Program of China ; National Natural Science Foundation of China
DOI	10.1016/j.msea.2019.138422
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51671191]
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:000494052200018
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：22[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/321006/136803
专题	中国科学院金属研究所
通讯作者	Wang, D.; Xiao, B. L.
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhu, S. Z.,Ma, G. N.,Wang, D.,et al. Suppressed negative influence of natural aging in SiCp/6092Al composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,767:10.
APA	Zhu, S. Z.,Ma, G. N.,Wang, D.,Xiao, B. L.,&Ma, Z. Y..(2019).Suppressed negative influence of natural aging in SiCp/6092Al composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,767,10.
MLA	Zhu, S. Z.,et al."Suppressed negative influence of natural aging in SiCp/6092Al composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 767(2019):10.