Superplasticity of large-grained Ni-45Al

被引：0

作者：

Jiang, DM ^{[1
]}

Lin, DL ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Open Lab Educ, Minist China High Temp Mat & Tests, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

来源：

ACTA METALLURGICA SINICA | 2003年 / 39卷 / 01期

关键词：

Ni-45Al alloy; large-grained; superplasticity; recovery and recrystallization;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

High temperature deformation behaviors of single phase Ni-45Al alloy with initial grain size of 270 mum were examined. It was found that the alloy exhibits superplastic behavior under an initial strain rate of 1x10(-4) s(-1) to 2.5x10(-2) s(-1) at 1000 degreesC to 1100 degreesC. A maximum elongation of 245% was obtained at 1075 degreesC with the strain rate sensitivity of 0.3. The activation energy was determined to be about 320 kJ/mol. The initial large grain microstructure became much finer after superplastic deformation. The large grained superplastic phenomenon could be explained by continuous recovery and recrystallization.

引用

页码：47 / 50

页数：4

共 11 条

[1] Superplasticity of stoichiometric NiAl with large grains
Du, XH
Guo, JT
Zhou, BD
[J]. SCRIPTA MATERIALIA, 2001, 45 (01) : 69 - 74
[2] Gu Yuefeng, 1997, Acta Metallurgica Sinica, V33, P325
[3] JIANG D, IN PRESS MAT SCI LET
[4] Superplastic deformation of boron doped Fe-18at.%Si
Kim, WY
Hanada, S
Sakai, T
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 248 (1-2): : 78 - 86
[5] STUDY OF SUPERPLASTIC DEFORMATION IN AN FEAL BASED ALLOY WITH LARGE GRAINS
LI, DQ
SHAN, AD
LIU, Y
LIN, DL
[J]. SCRIPTA METALLURGICA ET MATERIALIA, 1995, 33 (04): : 681 - 685
[6] Superplasticity in large-grained Fe3Al alloys
Lin, D
Lin, TL
Shan, A
Chen, M
[J]. INTERMETALLICS, 1996, 4 (06) : 489 - 496
[7] SUPERPLASTICITY IN FE3AL-TI ALLOY WITH LARGE GRAINS
LIN, DL
SHAN, AD
LI, DQ
[J]. SCRIPTA METALLURGICA ET MATERIALIA, 1994, 31 (11): : 1455 - 1460
[8] Microstructural evolution and mechanisms of superplasticity in large-grained iron aluminides
Lin, DL
Liu, Y
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 268 (1-2): : 83 - 89
[9] The microstructural evolution during superplastic deformation in FeAl intermetallic compound
Liu, Y
Li, DQ
Lin, DL
Chen, SP
[J]. SCRIPTA MATERIALIA, 1996, 34 (07) : 1095 - 1100
[10] Liu Zhenyun, 1996, Acta Metallurgica Sinica, V32, P1139

← 1 2 →