摘要
对３８ＣｒＭｏＡｌ，４２ＣｒＭｏ和Ｗ６Ｍｏ５Ｃｒ４Ｖ２Ａｌ合金钢盐浴硫氮碳共渗层的组织进行的研究表明：３８ＣｒＭｏＡｌ和Ｗ６Ｍｏ５Ｃｒ４Ｖ２Ａｌ钢的共渗层中，白亮层和过渡层的交界处有沿一定晶面析出的大量针状氮化物和沿晶界析出的网状氮化物，它们导致白亮层中出现１００μｍ左右的裂纹．这种不正常组织将使渗层强度降低、脆性增大，这说明铝合金钢不适于进行盐浴硫氮碳共渗处理．
The microstructures of sulfo-nitro-carburizing layer of Al-containing alloy steels were studied. The results reveal that in the white and transition areas, which are the subdivisions of the layer, nitrides preciptate greatly in the form of needle and at grain boundaries in the form of network. These cause about 100 μm microcracks in the white area. The extraordinary microstructure of the layer indicates that Al-containing alloy steels are not suited for sulfo-nitro-carburizing treatment in salt bath.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第8期829-833,共5页
Acta Metallurgica Sinica
关键词
盐浴硫氮碳共渗
铝合金钢
氮化物
sulfo-nitro-carburizing in salt bath, Al-containing alloy steel, nitride
