B2 grain size refinement and its effect on room temperature tensile properties of a Ti-22Al-27Nb orthorhombic intermetallic alloy

被引：97

作者：

Emura, S ^{[1
]}

Araoka, A ^{[1
]}

Hagiwara, M ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Mat Engn Lab, Tsukuba, Ibaraki 3050047, Japan

来源：

SCRIPTA MATERIALIA | 2003年 / 48卷 / 05期

关键词：

orthorhombic phase; powder metallurgy; grain refinement; pinning effect; tensile properties;

D O I：

10.1016/S1359-6462(02)00462-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The prior B2 grain size of a Ti-22Al-27Nb orthorhombic intermetallic alloy has been successfully controlled to be in the range of 8-49 mum using a pinning effect of spherical alpha(2) particles against grain growth. The finest grained material showed an excellent combination of room temperature tensile strength (around 1000 MPa) and ductility (more than 15%). (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：629 / 634

页数：6

共 11 条

[1]

BANERJEE D, 1993, STRUCTURAL INTERMETALLICS, P19

[2] Part I. The microstructural evolution in Ti-Al-NbO plus Bcc orthorhombic alloys [J].

Boehlert, CJ ;

Majumdar, BS ;

Seetharaman, V ;

Miracle, DB .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (09) :2305-2323

[3]

BOEHLERT CJ, 1997, STRUCTURAL INTERMETA, P795

[4]

Emura S., 1999, P 9 C TIT 7 11 JUN 1, P298

[5]

Kumpfert J, 2001, Z METALLKD, V92, P128

[6] Microstructural control and mechanical properties of dual-phase TiAl alloys [J].

Liu, CT ;

Maziasz, PJ .

INTERMETALLICS, 1998, 6 (7-8) :653-661

[7] PHASE-STABILITY AND ORDERING BEHAVIOR OF THE O-PHASE IN TI-AL-NB ALLOYS [J].

MURALEEDHARAN, K ;

NANDY, TK ;

BANERJEE, D ;

LELE, S .

INTERMETALLICS, 1995, 3 (03) :187-199

[8] Examination of the Zener relationship between grain size and particle dispersion [J].

Nishizawa, T ;

Ohnuma, I ;

Ishida, K .

MATERIALS TRANSACTIONS JIM, 1997, 38 (11) :950-956

[9]

ROWE RG, 1991, MICROSTRUCTURE / PROPERTY RELATIONSHIPS IN TITANIUM ALUMINIDES AND ALLOYS, P387

[10]

ROWE RG, 1991, HIGH TEMPERATURE ORD, V4, P703

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