PM processing and characterisation of Ti-7Fe low cost titanium alloys

被引：59

作者：

Esteban, P. G. ^{[1
]}

Bolzoni, L. ^{[1
]}

Ruiz-Navas, E. M. ^{[1
]}

Gordo, E. ^{[1
]}

机构：

[1] Univ Carlos III Madrid, Dept Mat Sci & Engn, E-28903 Getafe, Spain

来源：

POWDER METALLURGY | 2011年 / 54卷 / 03期

关键词：

Titanium; Low cost alloys; Mechanical properties; Blended elemental method; POWDER-METALLURGY; IRON; DIFFUSION; BEHAVIOR;

D O I：

10.1179/174329009X457063

中图分类号：

TF [冶金工业];

学科分类号：

080601 [冶金物理化学];

摘要：

This work studies a set of low cost beta alloys with the composition Ti-7Fe, processed by conventional powder metallurgy (PM). The materials were prepared by conventional blending of elemental Ti hydride-dehydride powder with three different Fe powder additions: water atomised Fe, Fe carbonyl and master alloy Fe-25Ti. The optimal sintering behaviour and the best mechanical properties were attained with the use of Fe carbonyl powder, which reached a sintered density of up to 93% of the theoretical density, with UTS values of 800 MPa in the 'as sintered' condition. Coarse water atomised powder particles promoted reactive sintering, and coarse porosity was found due to the coalescence of Kirkendall porosity and by the pores generated during the exothermic reaction between Ti and Fe. The addition of Fe-25Ti produced brittle materials, as its low purity (91.5%) was found to be unsuitable for formulating Ti alloys.

引用

页码：242 / 252

页数：11

共 39 条

[1]

*AENOR, 2001, EN1000212001 UNE AEN

[2]

*ASTM, 2004, E1937 ASTM

[3]

*ASTM, 2005, E1409 ASTM

[4]

BAEK WH, 1986, INT J POWDER METALL, V22, P235

[5]

Direct electrochemical reduction of titanium dioxide to titanium in molten calcium chloride [J].

Chen, GZ ;

Fray, DJ ;

Farthing, TW .

NATURE, 2000, 407 (6802) :361-364

[6]

Crowley G, 2003, ADV MATER PROCESS, V161, P25

[7]

Donachie M.J., 1988, Titanium : a technical guide

[8]

*EHK TECHN, 2002, OPP LOW COST TIT RED

[9]

EHK Technologies, 2004, SUMM EM TIT COST RED

[10]

POWDER-METALLURGY OF TITANIUM-ALLOYS [J].

FROES, FH ;

EYLON, D .

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

← 1 2 3 4 →