Effect of friction stir processing on the kinetics of superplastic deformation in an Al-Mg-Zr alloy

IMR OpenIR

	Effect of friction stir processing on the kinetics of superplastic deformation in an Al-Mg-Zr alloy
	Ma, ZY ; Mishra, RS ; Mahoney, MW ; Grimes, R
通讯作者	Ma, ZY(rsmishra@umr.edu)
	2005-06-01
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN	1073-5623
卷号	36A 期号:6 页码:1447-1458
摘要	The effect of friction stir processing on the superplastic behavior of extruded Al-4Mg-1Zr was examined at 350 &DEG; C to 600 &DEG; C and at initial strain rates of 1 X 10(-3) to 1 s(-1). A combination of a fine grain size of 1.5 μ m and high-angle grain boundaries in the friction stir-processed (FSP) alloy led to considerably enhanced superplastic ductility, much-reduced flow stress, and a shift to a higher optimum strain rate and lower optimum temperature. The as-extruded alloy exhibited the highest superplastic ductility of 1015 pct at 580 &DEG; C and an initial strain rate of 1 X 10(-2) s(-1), whereas a maximum elongation of 1280 pct was obtained at 525 &DEG; C and an initial strain rate of 1 X 10(-1) s(-1) for the FSP alloy. The FSP alloy exhibited enhanced superplastic deformation kinetics compared to that predicted by the constitutive relationship for superplasticity in fine-grained aluminum alloys. A possible origin for enhanced superplastic deformation kinetics in the FSP condition is proposed.
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000229537000007
出版者	MINERALS METALS MATERIALS SOC
引用统计	被引频次：56[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/321006/83896
专题	中国科学院金属研究所
通讯作者	Ma, ZY
作者单位	1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China 2.Univ Missouri, Dept Mat Sci & Engn, Columbia, MO 65409 USA 3.Rockwell Sci, Thousand Oaks, CA 91360 USA 4.Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2BP, England
推荐引用方式 GB/T 7714	Ma, ZY,Mishra, RS,Mahoney, MW,et al. Effect of friction stir processing on the kinetics of superplastic deformation in an Al-Mg-Zr alloy[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2005,36A(6):1447-1458.
APA	Ma, ZY,Mishra, RS,Mahoney, MW,&Grimes, R.(2005).Effect of friction stir processing on the kinetics of superplastic deformation in an Al-Mg-Zr alloy.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,36A(6),1447-1458.
MLA	Ma, ZY,et al."Effect of friction stir processing on the kinetics of superplastic deformation in an Al-Mg-Zr alloy".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 36A.6(2005):1447-1458.