Processing of high carbon Fe3Al based intermetallic alloy

被引：28

作者：

Baligidad, RG ^{[1
]}

Prakash, U ^{[1
]}

Radhakrishna, A ^{[1
]}

机构：

[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India

来源：

INTERMETALLICS | 1998年 / 6卷 / 7-8期

关键词：

iron aluminides; based on Fe3Al; mechanical properties at ambient temperature; casting; melting; microstructure;

D O I：

10.1016/S0966-9795(98)00050-8

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：

A melting procedure for air induction melting (AIM) of an Fe3Al based intermetallic alloy Fe-15.38wt%Al-1.1wt%C is described. Use of an appropriate slag cover during AIM results in elimination of hydrogen gas porosity in cast AIM ingots. Criteria for slag selection and slag to metal ratio are discussed. Refining by slag-metal reactions results in significant reduction in impurity levels (S, O, N) during AIM. Consequently, low cost raw materials such as mild steel scrap and commercial aluminium were used for melting the alloy. The AIM ingot exhibited excellent tensile properties. The ductility and hot workability of the ingot may be further improved by subsequent processing through electroslag remelting. It is also argued that the presence of carbon may be necessary to get AIM castings with desirable mechanical properties. (C) 1998 Elsevier Science Limited. All rights reserved.

引用

页码：765 / 769

页数：5

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