Characterisation of metal/mould interface on investment casting of γ-TiAl

被引：28
作者：
Barbosa, J.
Puga, H.
Ribeiro, C. S. [1 ]
Teodoro, O. M. N. D.
Monteiro, A. C.
机构：
[1] FEUP, Dept Eng Met & Mat, Oporto, Portugal
[2] Univ Minho, Dept Engn Mecan, Guimaraes, Portugal
[3] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Fis, CEFITEC, Caparica, Portugal
来源：
INTERNATIONAL JOURNAL OF CAST METALS RESEARCH | 2006年 / 19卷 / 06期
关键词：
TiAl; investment casting; ceramic mould; zirconia; yttria; silica; graphite; ceramic crucible;
D O I：
10.1179/136404606X163497
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
This paper describes the evaluation of different refractory compounds - SiO2, ZrO2 and Y2O3 - as face coats of investment casting shells for gamma-TiAl. The effect of the different refractories on the metal/mould interaction is studied in different aspects. Experimental results include characterisation of the constituents present at the metal/ mould interface, the segregation profiles of residual elements, namely oxygen, from the interface to the inner part of the samples, the extension and microhardness of the samples external hard case and the samples surface finishing.
引用
收藏
页码：331 / 338
页数：8
相关论文
共 15 条
[1]   Characterization of TiAl alloys by secondary ion mass spectrometry [J].
Barbosa, J ;
Teodoro, OMND ;
Moutinho, AMC ;
Ribeiro, S ;
Monteiro, C .
ADVANCED MATERIALS FORUM II, 2004, 455-456 :653-656
[2]   Processing of γTiAl, by ceramic crucible induction melting, and pouring in ceramic shells [J].
Barbosa, J ;
Ribeiro, CS ;
Monteiro, C .
THERMEC'2003, PTS 1-5, 2003, 426-4 :1933-1938
[3]  
BARBOSA J, 2001, THESIS U MINHO PORTU
[4]  
BARBOSA J, 2005, P EPD C 2005 2005 TM
[5]   Influence of crucible material on the level of contamination in TiAl using induction melting [J].
Barbosa, JJ ;
Ribeiro, CS .
INTERNATIONAL JOURNAL OF CAST METALS RESEARCH, 2000, 12 (05) :293-301
[6]  
FEAGIN RC, 1986, P 19 IECF EUR C INV
[7]   Microstructural characterization of segregation and precipitation in α2+γ titanium aluminides [J].
Larson, DJ ;
Liu, CT ;
Miller, MK .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 240 :220-228
[8]   Interstitial solubility in gamma and alpha(2) phases of TiAl-based alloys [J].
Menand, A ;
Huguet, A ;
NeracPartaix, A .
ACTA MATERIALIA, 1996, 44 (12) :4729-4737
[9]  
PIWONKA TS, 1994, P 42 ANN TECHN M INV
[10]   ON THE EVALUATION OF STABILITY OF RARE-EARTH-OXIDES AS FACE COATS FOR INVESTMENT-CASTING OF TITANIUM [J].
SAHA, RL ;
NANDY, TK ;
MISRA, RDK ;
JACOB, KT .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1990, 21 (03) :559-566
12