FeCrSiB合金激光熔敷中对流传质研究  

CONVECTION AND MASS TRANSFER IN LASER CLADDING ON FeCrSiB ALLOY

作　　者：杨洗陈[1] 郑天禧[1] 张乃坤[1] 钟敏霖[1] 林玉驹[1] 高胜利[1] 

机构地区：[1]天津纺织工学院,副教授天津300160

出　　处：《金属学报》1992年第2期B084-B088,共5页Acta Metallurgica Sinica

基　　金：国家自然科学基金

摘　　要：在FeCrSiB合金激光熔敷层中观察到对流图案,研究了光束对称性、基材对熔层稀释等与对流之间的关系,发现了对流引起的宏观偏析,理想的激光熔敷应具有低稀释率(<5％)The convection patterns were observed in laser cladding layer of FeCrSiB alloy.Laser beam symmetry, dilution of cladding layer by substrate, etc. with relation to convection patterns have been investigated. Macro--segregation and macroalloying in the cladding layer were found to be resulted by convection. The dilution rates of substrate materials into cladding layer are directly influential on microstructure and performace of the cladding. Ideal laser clad-ding conditions require that there is a minimum of dilution.

关 键 词：激光熔敷 对流 传质 FeCrSiB合金 

分 类 号：TG174.445[金属学及工艺—金属表面处理]