热加工工艺
熱加工工藝
열가공공예
HOT WORKING TECHNOLOGY
2009年
18期
90-92,95
,共4页
两步法%激光熔覆%显微硬度%耐腐蚀性能%耐磨损性能
兩步法%激光鎔覆%顯微硬度%耐腐蝕性能%耐磨損性能
량보법%격광용복%현미경도%내부식성능%내마손성능
two-step method%laser cladding%micro-hardness%corrosion resistance%wear properties
采用热喷涂+激光重熔两步法工艺对镁合金表面进行激光熔覆Fe-Ni-Cr-B-Si合金;对熔覆层进行了微观分析及性能测试.结果表明:熔覆层主要由FeCr、FeNi和AlNi_3等相组成,熔覆层的显微硬度、耐腐蚀性及耐磨损性能郜明显高于基体.
採用熱噴塗+激光重鎔兩步法工藝對鎂閤金錶麵進行激光鎔覆Fe-Ni-Cr-B-Si閤金;對鎔覆層進行瞭微觀分析及性能測試.結果錶明:鎔覆層主要由FeCr、FeNi和AlNi_3等相組成,鎔覆層的顯微硬度、耐腐蝕性及耐磨損性能郜明顯高于基體.
채용열분도+격광중용량보법공예대미합금표면진행격광용복Fe-Ni-Cr-B-Si합금;대용복층진행료미관분석급성능측시.결과표명:용복층주요유FeCr、FeNi화AlNi_3등상조성,용복층적현미경도、내부식성급내마손성능고명현고우기체.
Laser cladding of Fe-Ni-Cr-B-Si alloy on AZ91D alloy surface was achieved by two-step method,i.e.thermal spraying and laser re-melting.The microstructure and properties of cladding layer were investigated.The resutls show that the surface layer is composed of phases of FeCr,FeNi and AlNi3.The micro-hardness,wear properties and corrosion resistance are considerably improved as compared to the matrix.
