50CrMoV 钢脉冲放电涂层的激光重熔  

LASER REMELTING OF A PULSE DISCHARGE COATING ON 50CrMoV STEEL

作　　者：沈德久[1,2] 乔桂英[1,2] 王玉林 苑辉[1,2] 方春林 郑启光[3] 辜建辉 王涛 陶星之[3] 

机构地区：[1]燕山大学材料工程学院 [2]齐齐哈尔第一重型机器厂 [3]华中理工大学光电子系

出　　处：《复合材料学报》1997年第4期61-64,共4页Acta Materiae Compositae Sinica

基　　金：国家激光技术重点开放研究室资助

摘　　要：利用透射电镜、Ｘ射线衍射仪等实验手段研究了激光重熔５０ＣｒＭｏＶ钢脉冲放电涂层的组织与性能。结果表明，放电沉积后经激光重熔可使强化层硬度高达ＨＶ０．１１６００以上。试验分析认为，强化层的高硬度主要因激光超细化、高位错密度以及一定量的碳（氮）化物存在所致。After remelted by laser, the pulse discharge coating was studied by TEM, XRD and hardness measurement for microstructure and microhardness. The results showed that the hardness of the coating was up to HV0.11600 and even higher, which was due to the superfine structure, high density dislocations and carbonides in the coating.

关 键 词：激光重熔 放电涂层 硬度 合金钢 热处理 

分 类 号：TG156.99[金属学及工艺—热处理] TG174.44[金属学及工艺—金属学]