Phase equilibria in the Cr-Ni-C system and their use for developing physicochemical principles for design of hard alloys based on chromium carbide

被引：22
|
作者：
Bondar, AA [1 ]
Maslyuk, VA [1 ]
Velikanova, TY [1 ]
Grytsiv, AV [1 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Problems Mat Sci, Kiev, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 1997年 / 36卷 / 5-6期
关键词：
Phase Diagram; Alloy Phase Diagram; Hard Alloy; Solidus Temperature; Chromium Carbide;
D O I：
10.1007/BF02676213
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Cr-Ni-C phase diagram at the melting point was plotted by a combination of procedures (metallography, x-ray, microprobe, differential thermal analysis, Pirani-Alterthum method, etc.). A general feature of this system is the existence of equilibria between the nickel-based phase and all the other phases. The temperature of the quasibinary (Ni) + (Cr7C3) eutectic was determined to be 1324 +/- 6 degrees C. Based on both the phase diagram of the Cr-Ni-C system and the bending strength and Rockwell hardness of the alloys, the optimal composition of the initial carbide ingredient for production of hard alloys based on Cr3C2 with nickel-phosphorus binder was estimated as 13.0-13.3 at.%, substoichiometric with respect to Cr3C2.
引用
收藏
页码：242 / 252
页数：11
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