Superplastic behavior of a β-forged Ti3Al-Nb alloy

被引：11

作者：

Ding, H ^{[1
]}

Song, D ^{[1
]}

Zhang, CB ^{[1
]}

Cui, JZ ^{[1
]}

机构：

[1] Northeastern Univ, Shenyang 110006, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2000年 / 281卷 / 1-2期

关键词：

superplasticity; beta-forged; Ti3Al-Nb alloy;

D O I：

10.1016/S0921-5093(99)00719-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Superplastic behavior of a beta-forged Ti3Al-based alloy was investigated by compression tests and tensile tests and the microstructural evolution during the deformation process was studied. The results show that the true strain of the material reached 2.0 without surface cracking at 980 degrees C and 2 x 10(-3) s(-1) in a compression test. while the elongation was only about 100% at 980 degrees C and 10(-4) s(-1). In the primary stage of superplastic deformation. the separation of lath-like O grains occurred. Newly Formed equiaxed O grains slid and rotated in B2 phases and dislocation movements in B2 phase accommodated the sliding process. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：248 / 252

页数：5

共 15 条

[1] DEFORMATION CHARACTERISTICS OF AN AL-6CU-O.4ZR SUPERPLASTIC ALLOY
BRICKNELL, RH
EDINGTON, JW
[J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1979, 10 (09): : 1257 - 1263
[2] CHEN MW, 1995, ACTA METALL SINICA, V31, pA165
[3] Ding H, 1997, THERMEC '97 - INTERNATIONAL CONFERENCE ON THERMOMECHANICAL PROCESSING OF STEELS AND OTHER MATERIALS, VOLS I-II, P1505
[4] Evolution of microstructure and superplastic deformation mechanism in super α2Ti3Al base alloys
Fu, HC
Huang, JC
Wang, TD
Bampton, CC
[J]. ACTA MATERIALIA, 1998, 46 (02) : 465 - 479
[5] MICROSTRUCTURAL EVOLUTION BY CONTINUOUS RECRYSTALLIZATION IN A SUPERPLASTIC AL-MG ALLOY
HALES, SJ
MCNELLEY, TR
[J]. ACTA METALLURGICA, 1988, 36 (05): : 1229 - 1239
[6] Effect of grain size on superplasticity of an intermetallic Ti3Al compound
Imayev, R
Gabdullin, N
Salishchev, G
[J]. INTERMETALLICS, 1997, 5 (03) : 229 - 236
[7] Microstructure and superplasticity of a Ti-25Al-10Nb-3V-1Mo intermetallic alloy
Jobart, D
Blandin, JJ
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 207 (02): : 170 - 180
[8] Effects of heat treatments on the microstructure of a superplastic Ti3Al based alloy
Jobart, D
Blandin, JJ
[J]. JOURNAL OF MATERIALS SCIENCE, 1996, 31 (04) : 881 - 893
[9] THE INFLUENCE OF THERMOMECHANICAL PROCESSING VARIABLES ON SUPERPLASTICITY IN A HIGH-MG, AL-MG ALLOY
LEE, EW
MCNELLEY, TR
STENGEL, AF
[J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (06): : 1043 - 1050
[10] LIU YW, 1989, MAT SCI PROG, V3, P494

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