Plasma-assisted surface hardening of dual two-phase intermetallic alloy composed of Ni3X type structures

被引：5

作者：

Kaneno, Y. ^{[1
]}

Matsumoto, N. ^{[1
]}

Tsuji, N. ^{[2
]}

Tanaka, S. ^{[3
]}

Takasugi, T. ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Dept Mat Sci, Naka Ku, Osaka 5998531, Japan

[2] Tanaka Ltd, Sumiyoshi Ku, Osaka 5580053, Japan

[3] SDC Inc, Sakai Ku, Sakai, Osaka 5900984, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 516卷 / 1-2期

关键词：

Nickel based intermetallic compound; Geometrically close packed structure; Nitriding; Carburizing; Hardness; V TYPE STRUCTURES; MECHANICAL PROPERTY; GLOW-DISCHARGE; X-AL; MICROSTRUCTURE; TI;

D O I：

10.1016/j.msea.2009.03.010

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A dual two-phase intermetallic alloy composed of Ni3Al (L1(2)) and Ni3V (D0(22)) was plasma-nitrided (PN) or -carburized (PC) in dependence of processing temperature and time. The surface layers of nitrided or carburized alloy were characterized by micro-hardness measurement, scanning electron microscopy, electron probe micro-analysis and X-ray diffraction analysis. The maximum surface hardness of the alloy was obtained by nitriding at around 850 K and by carburizing at 1025 K, and little decreased up to a high temperature with increasing temperature. The XRD analysis revealed that vanadium nitrides (VN) and vanadium carbides (VC) were formed in the surface layer of the nitrided and carburized alloy, respectively; suggesting that the enhanced surface hardness is attributed to the dispersion hardening due to the nitrides and carbides. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：84 / 89

页数：6

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