Age-hardening behavior of cast Al-Si base alloy

doi:10.1016/j.matlet.2003.12.027

IMR OpenIR

	Age-hardening behavior of cast Al-Si base alloy
	Li, RX ; Li, RD ; Zhao, YH ; He, LZ ; Li, CX ; Guan, HR ; Hu, ZQ
通讯作者	Li, RX(runxiali@163.com)
	2004-06-01
发表期刊	MATERIALS LETTERS
ISSN	0167-577X
卷号	58 期号:15 页码:2096-2101
摘要	In this paper, age-hardening behavior of cast Al-Si base alloys was investigated. It is found that double aging peaks are present in the age-hardening curves of Al-Si-Cu-Mg alloys and the first peak is higher than the second one when aged at temperature above a certain temperature, whereas a hardness plateau and single hardness peak are present in age-hardening curves of Al-Si-Mg and Al-Si-Cu alloys. The results of differential scanning calorimetry (DSC) analyses and TEM observation reveal that the age-hardening behavior is related to the precipitation sequence of alloys. For the Al-Si-Cu-Mg alloy, the first aging peak is the result from the high-density GP zone (especially GP II zones), while the second one is from metastable phases. Obvious interval during the transition from GP zones to metastable phases in DSC curve, which caused by dissolution of GP zones and the nucleation of metastable phases on dislocation, may be the main reason of the formation of double aging peaks. The aging plateau of Al-Si-Mg alloys is corresponding to the continuous transition from GP zones to metastable phases, while single aging peak of Al-Si-Cu alloys is caused by metastable phases. (C) 2004 Elsevier B.V. All rights reserved.
关键词	cast Al-Si base alloy age-hardening precipitation double aging peaks DSC hardness heat treatment
DOI	10.1016/j.matlet.2003.12.027
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000221377600007
出版者	ELSEVIER SCIENCE BV
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81322
通讯作者	Li, RX
作者单位	1.Shenyang Univ Technol, Inst Mat Sci & Engn, Shenyang 110023, Peoples R China 2.Shenyang Inst Aeronaut Engn, Shenyang 110034, Peoples R China 3.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, RX,Li, RD,Zhao, YH,et al. Age-hardening behavior of cast Al-Si base alloy[J]. MATERIALS LETTERS,2004,58(15):2096-2101.
APA	Li, RX.,Li, RD.,Zhao, YH.,He, LZ.,Li, CX.,...&Hu, ZQ.(2004).Age-hardening behavior of cast Al-Si base alloy.MATERIALS LETTERS,58(15),2096-2101.
MLA	Li, RX,et al."Age-hardening behavior of cast Al-Si base alloy".MATERIALS LETTERS 58.15(2004):2096-2101.