Superplastic behavior of Ti-43Al-7(Nb,Mo)-0.2B alloy in the cast plus heat-treated condition

被引：51
作者：
Imayev, V. [1 ]
Imayev, R.
Khismatullin, T.
Guether, V.
Beck, W.
Fecht, H-J
机构：
[1] Russian Acad Sci, Inst Met Superplast Problems, Moscow 117901, Russia
[2] GfE Metalle & Materialien GmbH, Nurnberg, Germany
[3] FormTech GmbH, Weyhe, Germany
[4] Univ Ulm, Inst Micro & Nanomat, Ulm, Germany
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 03期
关键词：
titanium aluminides; heat treatment; microstructure;
D O I：
10.1016/j.scriptamat.2007.04.012
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A novel approach to the fabrication of a globularized fine-grained structure in gamma + alpha(2), titanium aluminide alloys has been proposed. The approach includes the use of specially designed alloys and a globularization anneal that excludes any primary hot working. As was demonstrated for the Ti-43Al-7(Nb,Mo)-0.2B alloy (in at. %), this resulted in superplastic behavior in the temperature range of T = 1050-1130 degrees C and a strain rate of epsilon' = 1.7 x 10(-4) s(-1) (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：193 / 196
页数：4
相关论文
共 16 条
[1]  
ALTUNIN JF, 1961, TITANIUM IND, P5
[2]  
Cheng TT, 1999, GAMMA TITANIUM ALUMINIDES 1999, P389
[3]  
CHENG TT, 1997, STRUCTURAL INTERMETA, P253
[4]  
Das G, 2001, STRUCTURAL INTERMETALLICS 2001, P121
[5]   Microstructure development in gamma alloy mill products by thermomechanical processing [J].
Dimiduk, DM ;
Martin, PL ;
Kim, YW .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 243 (1-2) :66-76
[6]   The effect of heat treatments on the microstructural stability of the intermetallic Ti-46.5Al-2W-0.5Si [J].
Gil, I ;
Muñoz-Morris, MA ;
Morris, DG .
INTERMETALLICS, 2001, 9 (05) :373-385
[7]   Alloy design concepts for refined gamma titanium aluminide based alloys [J].
Imayev, R. M. ;
Imayev, V. M. ;
Oehring, M. ;
Appel, F. .
INTERMETALLICS, 2007, 15 (04) :451-460
[8]   Low-temperature superplasticity of titanium aluminides [J].
Imayev, RM ;
Salishchev, GA ;
Senkov, ON ;
Imayev, VM ;
Shagiev, MR ;
Gabdullin, NK ;
Kuznetsov, AV ;
Froes, FH .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 300 (1-2) :263-277
[9]   Phase equilibria among α (hcp), β (bcc) and γ (Ll0) phases in Ti-Al base ternary alloys [J].
Kainuma, R ;
Fujita, Y ;
Mitsui, H ;
Ohnuma, I ;
Ishida, K .
INTERMETALLICS, 2000, 8 (08) :855-867
[10]  
Mishra RS, 1995, GAMMA TITANIUM ALUMINIDES, P571
12