Gaseous carburising of self-passivating Fe-Cr-Ni alloys in acetylene-hydrogen mixtures

被引:17
作者
Christiansen, T. L. [1 ]
Hummelshoj, T. S. [1 ]
Somers, M. A. J. [1 ]
机构
[1] Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark
关键词
Carburising; Acetylene; Expanded austenite; PYROLYSIS; CARBON; CARBURIZATION;
D O I
10.1179/1743294411Y.0000000006
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Gaseous carburising of self-passivating Fe-Cr-Ni alloys in acetylene-hydrogen was investigated for temperatures up to 823 K. Acetylene-hydrogen gas mixtures allow both the activation of the surface and the subsequent carburising at a high and adjustable carburising potential. For relatively low temperatures, carbon stabilised expanded austenite develops, which has high hardness, while retaining the corrosion performance of the untreated alloy; for relatively high temperatures, Cr based carbides develop, and eventually, the material deteriorates by metal dusting corrosion.
引用
收藏
页码:602 / 608
页数:7
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