Metal injection moulding of gamma titanium aluminide alloy powder

被引：46

作者：

Gerling, R ^{[1
]}

Aust, E ^{[1
]}

Limberg, W ^{[1
]}

Pfuff, M ^{[1
]}

Schimansky, FP ^{[1
]}

机构：

[1] GKSS Forschungszentrum Geesthacht GmbH, Mat Res Inst, D-21502 Geesthacht, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 423卷 / 1-2期

关键词：

titanium alummides; metal injection moulding; microstructure; porosity; tensile properties;

D O I：

10.1016/j.msea.2006.02.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fine alloy powder with the nominal composition Ti 47Al 4(Mn,Cr,Nb,Si,B) (at%) has been produced by argon gas atomization and processed by metal injection moulding. The main objective of process optimization concerned the level of the impurity pick-up and the influence of sintering atmosphere on porosity and microstructure. The evaporation of Al during sintering can be controlled by varying the gas pressure of the Ar atmosphere. Impuritiy levels around 1350 mu g/g (O), 90 mu g/g (N) and 350 mu g/g (C) were achieved. During sintering, a near gamma microstructure with average gamma grain size around 12 mu m is obtained. Tensile tests were conducted at RT using as-sintered samples and additionally HIP'ed test specimens. The results are discussed considering the properties of samples with comparable composition and microstructure manufactured by HIP of alloy powder and subsequent annealing. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：262 / 268

页数：7

共 21 条

[1]

[Anonymous], 2003, GAMMA TITANIUM ALUMI

[2] Novel design concepts for gamma-base titanium aluminide alloys [J].

Appel, F ;

Oehring, M ;

Wagner, R .

INTERMETALLICS, 2000, 8 (9-11) :1283-1312

[3]

Bohn R., 1999, Materials Science Forum, V312-314, P575, DOI 10.4028/www.scientific.net/MSF.312-314.575

[4]

CHEN GL, 1993, STRUCTURAL INTERMETALLICS, P319

[5] Power metallurgical processing of intermetallic gamma titanium aluminides [J].

Gerling, R ;

Clemens, H ;

Schimansky, FP .

ADVANCED ENGINEERING MATERIALS, 2004, 6 (1-2) :23-38

[6] Structural characterization and tensile properties of a high niobium containing gamma TiAl sheet obtained by powder metallurgical processing [J].

Gerling, R ;

Bartels, A ;

Clemens, H ;

Kestler, H ;

Schimansky, FP .

INTERMETALLICS, 2004, 12 (03) :275-280

[7] Prospects for metal injection moulding using a gamma titanium aluminide based alloy powder [J].

Gerling, R ;

Schimansky, FP .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 329 :45-49

[8]

HUANG SC, 1993, STRUCTURAL INTERMETALLICS, P299

[9]

HUANG SC, 1991, MICROSTRUCTURE / PROPERTY RELATIONSHIPS IN TITANIUM ALUMINIDES AND ALLOYS, P105

[10]

ITOH Y, 2004, EURO PM 2004 C P, V4, P445

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