摘要
采用光纤激光器,在Ti6Al4V合金表面激光熔覆Ni60和Ni/MoS_2粉末制备复合涂层,利用OM、SEM、EDS分析了激光功率对熔覆层宏观形貌、显微组织、显微硬度的影响。结果表明,在其他工艺参数不变的条件下,随着激光功率的增大,熔覆层宽度、厚度、基材熔化深度、热影响区深度均增大;显微硬度逐渐增大;熔覆层表面质量下降,最佳激光功率范围为1.5～2 k W。
Composite coating was prepared on the surface of Ti6Al4 V alloy by fiber laser cladding Ni60-Ni/Mo S2 powder. Effect of laser power on macro morphology,microstructure and microhardness were analyzed by OM,SEM and EDS. The results show that under the condition of other parameters unchanged,with laser power increasing,the width and thickness of cladding layer,melting depth of substrate material and heat affected zone,the microhardness of cladding are all increased,while the surface quality of the cladding layer is decreased,the best range of laser power is 1. 5-2 k W.
出处
《金属热处理》
CAS
CSCD
北大核心
2016年第3期57-60,共4页
Heat Treatment of Metals
基金
国家自然科学基金(51371125)
天津市应用基础及前沿技术研究计划(11JCZDJC21400)
关键词
激光功率
钛合金
NI基复合涂层
显微组织
显微硬度
laser power
titanium alloy
Ni-based composite coating
microstructure
microhardness
