Enhanced superplastic deformation behavior of ultrafine-grained Ti-6Al-4V alloy

被引：18

作者：

Saitova, L. ^{[1
,3
]}

Semenova, I. ^{[2
]}

Höppel, H.W. ^{[1
]}

Valiev, R. ^{[2
]}

Göken, M. ^{[1
]}

机构：

[1] Department of Materials Science and Engineering, Institute I: General Materials Properties, Universität Erlangen, Nürnberg

[2] Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa

[3] Department of Materials Science and Engineering, Institute I: General Materials Properties, Universität Erlangen-Nürnberg, 91058, Erlangen

来源：

Materialwissenschaft und Werkstofftechnik | 2008年 / 39卷 / 4-5期

关键词：

Grained materials; Severe plastic deformation; Superplasticity; Ti-6A1-4V alloy; Ultrafine;

D O I：

10.1002/mawe.200800308

中图分类号：

学科分类号：

摘要：

The mechanical behavior of the Ti-6Al-4V ELI alloy in both conventional grain size (CG) and ultrafine-grained (UFG) conditions under tension and compression at elevated temperatures (500-800°C) is considered. Grain refinement by equal-channel angular pressing (ECAP) followed by multicycle extrusion was observed to result in a considerable improvement of superplastic characteristics of Ti-6A1-4V ELI alloy. The alloy exhibits a superplastic deformation behavior already at 600 °C. The enhanced regime of superplasticity allows more efficient forming of parts and components. In addition, the UFG microstructure and, consequently, enhanced mechanical properties are kept after superplastic forming. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.

引用

页码：367 / 370

页数：3

共 15 条

[1]

Kaibyshev O., Superplasticity of alloys, intermetallides and ceramics, (1992)

[2]

Nieh T.G., Wadworth J., Sherby O.D., Superplasticity in Metals and Ceramics, (1997)

[3]

Langdon T.G., Metall. Tram, 13 A, (1982)

[4]

Valiev R.Z., Nature Materials, 3, (2004)

[5]

Valiev R.Z., Langdon T.G., Prog. Mater. Sci, 51, (2006)

[6]

Mishra R.S., Stolyarov V.V., Echer C., Valiev R.Z., Mukherjee A.K., Mater. Sci. Eng. A, 298, (2001)

[7]

Sergueeva A.V., Stolyarov V.V., Valiev R.Z., Mukherjee A.K., Scripta Mater, 43, (2000)

[8]

Sergueeva A.V., Stolyarov V.V., Valiev R.Z., Mukherjee A.K., Mater. Sci. Eng. A, 323, (2002)

[9]

Zherebtsov S.V., Salishchev G.A., Galeyev R.M., Valiakhmetov O.R., Mironov S.Y., Semiatin S.L., Scripta Mater, 51, (2004)

[10]

Ko Y.G., Kim W.G., Lee C.S., Shin D.H., Mater. Sci. Eng. A, 410-411, (2005)

← 1 2 →