TiAlSi intermetallic formation and its impact on the casting processing in Al-Si alloys

被引：63

作者：

Chen, X-G ^{[1
]}

Fortier, M. ^{[2
]}

机构：

[1] Univ Quebec, Dept Appl Sci, Chicoutimi, PQ G7H 2B1, Canada

[2] Rio Tinto Alcan Inc, Arvida Res & Dev Ctr, Jonquiere, PQ G7S 4K8, Canada

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2010年 / 210卷 / 13期

基金：

加拿大自然科学与工程研究理事会;

关键词：

TiAlSi intermetallics; Al-Si alloys; Microstructure; Grain refinement; Feeding blockage; Wormhole defect; GRAIN-REFINEMENT; ALUMINUM;

D O I：

10.1016/j.jmatprotec.2010.06.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of titanium additions on the formation of primary TiAlSi intermetallics and resulted cast microstructure in Al-Si alloys has been studied. The precipitation temperature, growth kinetic and morphology of TiAlSi intermetallics as well as the solubility limit of Ti in Al-Si alloys were experimentally evaluated. The impact of primary TiAlSi intermetallic particles on the casting process related problems was investigated on the large scale of industrial production. The influence of Ti in the occurrence of feeding blockage and wormhole defect during ingot casting was described. The perspectives of Ti addition in Al-Si cast alloys were discussed. It is proposed that the Ti level in the most Al-Si cast alloys should be controlled within 0.10 wt.%. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1780 / 1786

页数：7

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