摘要
用２ｋＷＣＯ２激光器对４５钢表面进行了Ｃｒ合金化处理．并对激光合金化工艺、成分、组织进行了研究．阐述了合金化层深与扫描速度、涂层厚度之间的关系，并用电子探针（ＥＰＭＡ）研究了合金化层成分与组织的关系．结果表明：低Ｃｒ（５％～１８％Ｃｒ）时，合金层为马氏体组织；高Ｃｒ（３０％～４４％Ｃｒ）时为铁素体组织，并分析了相应的沿层深方向的显微硬度变化规律．
Laser surface alloying of chromium on 0. 45%C steel is performed with a 2 kW CO2 laser. The technology of laser surface alloying, compositions and microstructures are studied. The relationship is dealt with between the depth of LSA and scanning speed and coating thickness. On EPMA analysis, it is shown that the microstructures are of martensite and ferrite at 5%～ 8%Cr and 30%～44%Cr respectively. The variations of microhardness with the case depth are analysed.
出处
《江苏理工大学学报（自然科学版）》
1996年第6期64-67,共4页
Journal of Jiangsu University of Science and Technology(Natural Science)
