Fabrication of nanostructured tool steel layer by combination of laser cladding and friction stir processing
Fabrication of nanostructured tool steel layer by combination of laser cladding and friction stir processing
复制标题
DOI：
10.1016/j.surfcoat.2010.11.062
复制
发表时间：
2011-02
影响因子：
5.4
通讯作者：
Y. Morisada;H. Fujii;T. Mizuno;Genryu Abe;T. Nagaoka;M. Fukusumi
中科院分区：
文献类型：
--
作者：
Y. Morisada;H. Fujii;T. Mizuno;Genryu Abe;T. Nagaoka;M. Fukusumi
采用激光熔覆和搅拌摩擦工艺相结合的方法制备了具有不同碳化物颗粒的纳米结构工具钢涂层。在FSP过程中，激光熔覆形成的树枝状碳化物被粉碎成纳米碳化物颗粒，并均匀地分散在铁基体中。碳化物颗粒的形状和尺寸可以通过激光熔覆和FSP的条件来控制。在优化工艺条件下，激光和FSP形成的纳米结构工具钢层的显微硬度约为900 HV，高于常规工具钢。
A general fabrication process of the nanostructured tool steel layer with various carbide particles was developed by a combination of laser cladding and friction stir processing (FSP). The dendritic carbides formed by the laser cladding were crushed to carbide nanoparticles during the FSP, and were uniformly dispersed in the iron matrix. The shape and size of the carbide particles could be controlled by the conditions of the laser cladding and the FSP. The nanostructured tool steel layer formed by the laser and the FSP under the optimized conditions had a microhardness of ~900HV which was higher than that of conventional tool steels.