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Alloying Behavior of Ni3Si and the 900°C Isotherms of Several Ni-Si-X Systems At Ni-Rich Corner

Published online by Cambridge University Press:  26 February 2011

Zhang Tianxiang ,
Li Yundong ,
Zheng Zhi  and
Zhu Yaoxiao
Zhang Tianxiang
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang 110015, China
Li Yundong
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang 110015, China
Zheng Zhi
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang 110015, China
Zhu Yaoxiao
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang 110015, China
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Abstract

The solid solubilities of 15 common alloying elements in the L12-type intermetallic compound Ni3Si have been determined at 900°C, and their substitution mode has been deduced from the direction of solubility lobe of the compound. It is shown that the alloying behavior in Ni3Si is determined by both size and electronic factors, i.e, the substitution mode is governed by electronic configuration and solubility by the both. The solubilities of alloying elements can be explained on the two dimensional map proposed by Alonso and Simozar.

Four isotherms of Ni-Si-X (X = Fe,Cr, Co,Cu) have been obtained. They are very similar in structure.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 137
Copyright
Copyright © Materials Research Society 1991

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