摘要
采用激光熔覆技术在304不锈钢表面制备得到FeCoCrNiAl_(0.3)Mo_(0.1)合金涂层,研究了激光功率(800、1000、1200W)对涂层质量及组织的影响。结果表明,800、1000W激光功率下,涂层有裂纹、气孔缺陷,1200W下涂层未发现明显缺陷。不同激光功率下涂层组织均为柱状枝晶,但经比较分析发现1200W下的组织更细小均匀;对涂层进行成分分析发现,Fe含量远高于名义值,Al含量远低于名义值,涂层由底部至顶部Fe、Cr元素平均含量逐渐减少,其他元素含量逐渐增多,且晶间Mo、Cr含量高于晶内。
FeCoCrNiAl_(0.3)Mo_(0.1)alloy coating was prepared on the surface of 304 stainless steel,and the effect of laser power(800,1000,1200 W)on the coating quality and microstructure was studied.The results show that the coating prepared at 800 W and 1000 W laser power has cracks and stoma defects,and no obvious defect is found at 1200 W.The coating structure at different laser powers is columnar,but after comparative analysis,the microstructure of the coating at 1200 W is finer and more uniform.The composition analysis of the coating finds that the Fe content is much higher than the nominal value,but the Al content is far lower than the nominal value.From bottom to top,the average content of Fe and Cr gradually decreases,and the content of other elements gradually increases.It is also found that the content of Mo and Cr in intergranular is higher than that in intragranular.
作者
赵勇桃
胡雨晴
胡帅
吴银虎
杨泽华
王瑞
Zhao Yongtao;Hu Yuqing;Hu Shuai;Wu Yinhu;Yang Zehu;Wang Rui(College of Materials Science and Engineering,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia O14010,China;Inner Mongolia Key Laboratory of New Metal Material,Baotou Inner Mongolia O14010,China;Rutting Forks Branch,China Railway Shanqiao Group Corporation,Qinhuangdao Hebei 066205,China;Institute of Process Materials Technology,North Heavy Industries Group Co.,Baotou Inner Mongolia 014030,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2024年第10期246-250,共5页
Heat Treatment of Metals
基金
内蒙古自治区自然科学基金(2021MS05034)。
