MICROSTRUCTURE EVOLUTION DURING ANNEALING OF CAST TiAl-BASED ALLOY

被引：0

作者：

Klimova, Alena ^{[1
]}

Lapin, Juraj ^{[1
]}

机构：

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

来源：

METAL 2014: 23RD INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS | 2014年

关键词：

TiAl; heat treatment; microstructure; hardness; microhardness; INTERMETALLIC TI-46AL-2W-0.5SI ALLOY; MECHANICAL-PROPERTIES; LAMELLAR STRUCTURE; TI-46AL-8NB ALLOY; OXYGEN; SOLIDIFICATION; CONTAMINATION;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Microstructure evolution, Vickers hardness and Vickers microhardness were investigated in intermetallic TiAlbased alloy with nominal composition Ti-48Al-2Nb-1Cr-0.2Si (at.%). The samples prepared from as-received cast ingot and centrifugally cast turbocharger wheel were subjected to heat treatment consisting of isothermal annealing at temperatures ranging from 1150 to 1320 degrees C in protective argon atmosphere and air cooling to room temperature. The effect of contamination of the alloy resulting from induction melting in a ceramic crucible and centrifugal casting into ceramic mould on the microstructure evolution during annealing is discussed.

引用

页码：1145 / 1150

页数：6

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