Characterization of superplasticity in Ti-5.5Al-1Fe alloys

被引：23

作者：

Koike, J ^{[1
]}

Shimoyama, Y

Fujii, H

Maruyama, K

机构：

[1] Tohoku Univ, Dept Mat Sci, Sendai, Miyagi 9808579, Japan

[2] Nippon Steel Corp Ltd, Steel Res Labs, Futtsu 2930011, Japan

来源：

SCRIPTA MATERIALIA | 1998年 / 39卷 / 08期

关键词：

D O I：

10.1016/S1359-6462(98)00286-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ti-5.5Al-1Fe alloy was found to exhibit superplastic elongation of more than 400% at all examined temperatures from 1050 to 1200 K and in a wide range of strain rates from 10-4 to 10-2 s-1. The optimum elongation of 800% was obtained at 1100 K at 1 × 10-3 s-1. The strain-rate sensitivity at 1100 K was approximately 0.5, and the apparent activation energy was 314 kJ/mol. The present work showed that full replacement of V with Fe can successfully bring about an excellent superplasticity while retaining a good room-temperature strength.

引用

页码：1009 / 1014

页数：6

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