Microstructure Development and Alloying Elements Diffusion during Sintering of Near-β Titanium Alloys

被引：9

作者：

Pereloma, Elena ^{[1
]}

Savvakin, Dmytro ^{[2
]}

Carman, Andrew ^{[1
]}

Gazder, Azdiar ^{[1
]}

Ivasishin, Orest ^{[2
]}

机构：

[1] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[2] Natl Acad Sci Ukraine, Inst Mat Phys, UA-03142 Kiev, Ukraine

来源：

POWDER METALLURGY OF TITANIUM: POWDER PROCESSING, CONSOLIDATION AND METALLURGY OF TITANIUM | 2012年 / 520卷

关键词：

Titanium alloys; microstructure; sintering; iron content; diffusion; POWDER-METALLURGY; BEHAVIOR;

D O I：

10.4028/www.scientific.net/KEM.520.49

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Two near-beta alloys, Ti-5Al-5Mo-5V-2Cr-1Fe and Ti-10V-3Fe-3Al, were produced by the blended element powder metallurgy technique. The use of (i) elemental powders with the Al-V master alloy in the case of Ti-5Al-5Mo-5V-2Cr-1 Fe and, (ii) the complex Al-Fe-V master alloy in Ti-10V-3Fe-3Al has highlighted the influence of different alloying elements and their combination on microstructure evolution and chemical homogenisation. While Fe has the fastest diffusivity in Ti and its addition improves the density of both sintered alloys it also results in accelerated rates of grain coarsening. The combination of Al and V in the master alloy powder inhibits the diffusion of V into the Ti matrix. The unexpectedly slow diffusion of Cr at the early sintering stage in Ti-5Al-5Mo-5V-2Cr-1Fe was attributed to the formation of surface oxides on the Cr powders.

引用

页码：49 / +

页数：3

共 15 条

[1] Evaluation of Low Cost Titanium Alloy Products [J].

Barnes, John E. ;

Peter, William ;

Blue, Craig A. .

LIGHT METALS TECHNOLOGY 2009, 2009, 618-619 :165-+

[2] Role of alloying elements in microstructure evolution and alloying elements behaviour during sintering of a near-β titanium alloy [J].

Carman, A. ;

Zhang, L. C. ;

Ivasishin, O. M. ;

Savvakin, D. G. ;

Matviychuk, M. V. ;

Pereloma, E. V. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (03) :1686-1693

[3] POWDER-METALLURGY OF TITANIUM-ALLOYS [J].

FROES, FH ;

EYLON, D .

INTERNATIONAL MATERIALS REVIEWS, 1990, 35 (03) :162-182

[4] Diffusion during powder metallurgy synthesis of titanium alloys [J].

Ivasishin, O. M. ;

Eylon, D. ;

Bondarchuk, V. I. ;

Savvakin, D. G. .

DIFFUSION AND DIFFUSIONAL PHASE TRANSFORMATIONS IN ALLOYS, 2008, 277 :177-+

[5] The Impact of Diffusion on Synthesis of High-Strength Titanium Alloys from Elemental Powder Blends [J].

Ivasishin, Orest M. ;

Savvakin, Dmytro G. .

COST-AFFORDABLE TITANIUM III, 2010, 436 :113-121

[6] DIFFUSION OF CHROMIUM AND PALLADIUM IN BETA-TITANIUM [J].

LEE, SY ;

IIJIMA, Y ;

HIRANO, K .

MATERIALS TRANSACTIONS JIM, 1991, 32 (05) :451-456

[7] Design of powder metallurgy titanium alloys and composites [J].

Liu, Y ;

Chen, LF ;

Tang, HP ;

Liu, CT ;

Liu, B ;

Huang, BY .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 418 (1-2) :25-35

[8] CORRECTION [J].

LIU, Z .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1991, 22 (04) :946-946

[9]

Lutjering JC Williams G., 2007, TITANIUM, V2nd

[10]

Massalski T.B., 1990, BINARY ALLOYS PHASE, V2nd

← 1 2 →