激光熔覆FeCrNiCoMnB_x高熵合金涂层的组织结构与性能
发布时间：2019-06-07 11:20
【摘要】：采用激光熔覆技术制备FeCrNiCoMnB_x高熵合金涂层,研究了硼含量对激光熔覆FeCrNiCoMnB_x高熵合金涂层的组织结构、硬度和摩擦磨损性能的影响,以及硼化物中层错形成机制。结果表明:涂层均由简单fcc结构固溶体和硼化物两相组成。当硼含量x≤0.75时,生成的硼化物以(Cr,Fe)_2B相为主;而当硼含量x=1时,生成大量的(Fe,Cr)_2B相。随着硼含量的增加,涂层中的硼化物含量增加,硬度增大,耐磨性能增强。硼化物(Fe,Cr)_2B相在(110)面存在大量堆垛层错。硼化物中的层错是(Fe,Cr)_2B相通过(110)面的层错(滑移距离为1/4[111])方式而向(Cr,Fe)_2B相转变而产生。
[Abstract]:FeCrNiCoMnB_x high entropy alloy coating was prepared by laser cladding. The effect of boron content on the microstructure, hardness and friction and wear properties of laser coated FeCrNiCoMnB _ x high entropy alloy coating, as well as the formation mechanism of interlayer fault of borided alloy coating, were studied. The effect of boron content on the microstructure, hardness and friction and wear properties of FeCrNiCoMnB _ x high entropy alloy coating was studied. The results show that the coatings are composed of simple fcc solid solution and boride. When boron content x 鈮，
本文编号：2494755
[Abstract]:FeCrNiCoMnB_x high entropy alloy coating was prepared by laser cladding. The effect of boron content on the microstructure, hardness and friction and wear properties of laser coated FeCrNiCoMnB _ x high entropy alloy coating, as well as the formation mechanism of interlayer fault of borided alloy coating, were studied. The effect of boron content on the microstructure, hardness and friction and wear properties of FeCrNiCoMnB _ x high entropy alloy coating was studied. The results show that the coatings are composed of simple fcc solid solution and boride. When boron content x 鈮，
本文编号：2494755
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