Investigation of superplasticity in friction stir processed 2219Al alloy

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	Investigation of superplasticity in friction stir processed 2219Al alloy
	F. C. Liu ; B. L. Xiao ; K. Wang ; Z. Y. Ma
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2010
卷号	527 期号:16-17 页码:4191-4196
关键词	Superplasticity Aluminum alloy Friction stir processing Grain growth strain rate superplasticity mg-sc alloy low-temperature superplasticity severe plastic-deformation abnormal grain-growth zr alloy aluminum-alloys 7075al alloy microstructure evolution
ISSN号	0921-5093
中文摘要	Commercial 2219Al-T6 alloy plates were friction stir processed (FSPed) at a rotation rate of 400 rpm and a traverse speed of 100 mm/mm n in water and air, producing two fine-grained 2219Al samples with average grain sizes of 1.0 and 2.1 mu m, respectively. The 1.0 and 2.1 mu m-2219Al retained fine-grained microstructure during annealing treatment at temperatures up to 400 and 425 degrees C, respectively, above which abnormal grain growth occurred. Superplasticity was observed in 1.0 mu m-2219Al within the medium temperature range of 350-425 degrees C and a maximum ductility of 450% was obtained at 400 degrees C and 3 x 10(-4) s(-1). Increasing the grain size from 1.0 to 2.1 mu m resulted in a slight increase in the thermal stability, but did not enhance the superplasticity of the FSP 2219Al. The relatively low superplasticity in the FSP fine-grained 2219Al was attributed to unstable grain structure because the pining Al(2)Cu particles were easily coarsened at high temperatures. (C) 2010 Elsevier B.V. All rights reserved.
原文出处	://WOS:000278766800075
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31279]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	F. C. Liu,B. L. Xiao,K. Wang,et al. Investigation of superplasticity in friction stir processed 2219Al alloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(16-17):4191-4196.
APA	F. C. Liu,B. L. Xiao,K. Wang,&Z. Y. Ma.(2010).Investigation of superplasticity in friction stir processed 2219Al alloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(16-17),4191-4196.
MLA	F. C. Liu,et al."Investigation of superplasticity in friction stir processed 2219Al alloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.16-17(2010):4191-4196.