Solidification behaviour of TiAl-based alloys studied by directional solidification technique

被引：108

作者：

Lapin, J. ^{[1
]}

Gabalcova, Z. ^{[1
]}

机构：

[1] Slovak Acad Sci, Inst Mat & Machine Mech, Bratislava 83102, Slovakia

来源：

INTERMETALLICS | 2011年 / 19卷 / 06期

关键词：

Titanium aluminides; based on TiAl; Phase identification; Crystal growth; Microstructure; TO-EQUIAXED TRANSITION; MOLD MATERIALS; COLUMNAR; MICROSTRUCTURE; REFRACTORIES; GROWTH; OXYGEN;

D O I：

10.1016/j.intermet.2010.11.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Solidification behaviour of TiAl-based alloys with the nominal chemical composition Ti-46Al-8Ta and Ti-46Al-8Nb (at.%) was studied at steady- and unsteady-state conditions in Y2O3 moulds using Bridgman solidification technique. The effect of growth parameters (growth rate V and temperature gradient G(L)) on primary solidification phase, solidification path and microstructure parameters were determined. Directional solidification at unsteady-state conditions was applied to determine columnar to equiaxed transition (CET) in the studied systems. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：797 / 804

页数：8

共 31 条

[1] Influence of superheating on casting of γ-TiAl [J].

Barbosa, Joaquim ;

Ribeiro, C. Silva ;

Monteiro, A. Caetano .

INTERMETALLICS, 2007, 15 (07) :945-955

[2]

FEURER U, 1986, FUNDAMENTALS SOLIDIF, P214

[3]

Flemings M.C, 1974, Solidification Processing

[4]

Gabalcová Z, 2007, KOVOVE MATER, V45, P231

[5]

Harding RA, 2004, KOVOVE MATER, V42, P225

[6] STEADY-STATE COLUMNAR AND EQUIAXED GROWTH OF DENDRITES AND EUTECTIC [J].

HUNT, JD .

MATERIALS SCIENCE AND ENGINEERING, 1984, 65 (01) :75-83

[7]

HUNT JD, 1979, CELLULAR PRIMARY DEN, P1923

[8] IMPRESS integrated project - An overview paper [J].

Jarvis, DJ ;

Voss, D .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 413 :583-591

[9] Nucleation of massive gamma during air cooling of Ti46Al8Ta [J].

Jiang, H. ;

Zhang, K. ;

Hao, X. J. ;

Saage, H. ;

Wain, N. ;

Hu, D. ;

Loretto, M. H. ;

Wu, X. .

INTERMETALLICS, 2010, 18 (05) :938-944

[10] Directional solidification of TiAl base alloys using a polycrystalline seed [J].

Kim, SE ;

Lee, YT ;

Oh, MH ;

Inui, H ;

Yamaguchi, M .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 329 :25-30

← 1 2 3 4 →