Superplastic Behavior of a High-Strength Al-Zn-Mg-Cu-Zr Alloy

被引：16

作者：

Kumar, A. ^{[1
]}

Mukhopadhyay, A. K. ^{[1
]}

Prasad, K. S. ^{[1
]}

机构：

[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2009年 / 40A卷 / 02期

关键词：

7075; ALUMINUM;

D O I：

10.1007/s11661-008-9736-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study examines the superplastic potential of Al-Zn-Mg-Cu-Zr alloy AA 7449. It is demonstrated that the use of a suitable thermomechanical process (TMP) prior to superplastic deformation, together with the use of appropriate combinations of strain rate and temperature during the tensile test, enabled development of grain structures amenable (having an average grain size of < 10 mu m) to superplastic deformation in this alloy. This yielded as high as 460 pct elongation.

引用

页码：278 / 281

页数：4

共 9 条

[1]

BROWN KR, 1998, Patent No. 5772804

[2]

COURTNEY TH, 1990, MECH BEHAV MAT, P295

[3]

Kaibyshev O., 1992, SUPERPLASTICITY ALLO

[4]

Nieh T.G., 1997, Superplasticity in Metals and Ceramics, DOI 10.1017/CBO9780511525230

[5] High strain rate superplasticity in a continuously recrystallized Al-6%Mg-0.3%Sc alloy [J].

Nieh, TG ;

Hsiung, LM ;

Wadsworth, J ;

Kaibyshev, R .

ACTA MATERIALIA, 1998, 46 (08) :2789-2800

[6]

PILLINGS J, 1989, SUPERPLASTICITY CRYS

[7] Dynamic evolution of fine grained structure and superplasticity of 7075 aluminum alloy [J].

Sakai, T ;

Yang, XY ;

Miura, H .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 234 :857-860

[8]

WATTS MBM, 1976, MET SCI, V6, P189

[9] GRAIN-REFINEMENT IN 7075 ALUMINUM BY THERMOMECHANICAL PROCESSING [J].

WERT, JA ;

PATON, NE ;

HAMILTON, CH ;

MAHONEY, MW .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1981, 12 (07) :1267-1276

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