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粉末冶金材料科学与工程  2024, Vol. 29 Issue (4): 263-274    DOI: 10.19976/j.cnki.43-1448/TF.2024053
  理论研究 本期目录 | 过刊浏览 | 高级检索 |
56NiCrMoV7钢激光熔覆Ni60合金涂层的质量预测与性能分析
刘丽兰1, 杨帆1, 豆卫涛2, 张建广2, 韩飞燕2
1.西安理工大学 机械与精密仪器工程学院,西安 710048;
2.西安航空职业技术学院 航空制造工程学院,西安 710089
Quality prediction and performance analysis of laser cladding Ni60 alloy coating on 56NiCrMoV7 steel
LIU Lilan1, YANG Fan1, DOU Weitao2, ZHANG Jianguang2, HAN Feiyan2
1. School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China;
2. School of Aeronautical Manufacturing Engineering, Xi'an Aeronautical Polytechnic Institute, Xi'an 710089, China
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摘要 基于响应面法开展56NiCrMoV7钢表面激光熔覆Ni60合金粉末的理论及实验研究。以激光功率、扫描速度、送粉速率和搭接率为影响因素,以涂层表面平整度、稀释率及显微硬度为响应目标建立多元回归预测模型,进行工艺参数优化和涂层质量预测。结果表明:送粉速率和扫描速度的交互作用对表面平整度影响最大;激光功率、送粉速率及搭接率对稀释率均有显著影响;送粉速率对显微硬度影响最大,激光功率次之。优化的工艺参数为激光功率1 647 W,送粉速率0.5 rad/min,扫描速度5 mm/s,搭接率0.4,所制备Ni60合金涂层的表面平整度、稀释率和显微硬度预测值与实验值一致性较好。Ni60合金涂层与56NiCrMoV7基体之间为冶金结合,涂层的硬度和耐磨性均优于基体,表面强化效果明显。
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刘丽兰
杨帆
豆卫涛
张建广
韩飞燕
关键词 激光熔覆Ni60合金响应面法工艺参数显微硬度    
Abstract:Theoretical and experimental studies on laser cladding of Ni60 alloy powders on 56NiCrMoV7 steel surface were carried out based on response surface method. The laser power, scanning speed, powder feed rate, and overlap rate were taken as the influencing factors, and the multiple regression prediction model was established using the coating surface smoothness, dilution rate, and microhardness as the response targets to optimize the process parameters and predict the coating quality. The results show that the interaction of powder feed rate and scanning speed has the greatest influence on the surface smoothness; the laser power, powder feed rate, and overlap rate have a significant influence on the dilution rate; the powder feed rate has the greatest impact on the microhardness, followed by the laser power. The optimized process parameters are laser power of 1 647 W, powder feed rate of 0.5 rad/min, scanning speed of 5 mm/s, and overlap rate of 0.4, and the predicted values of surface flatness, dilution rate, and microhardness of Ni60 alloy coatings are in good agreement with the experimental values. The metallurgical bonding of Ni60 alloy coating and 56NiCrMoV7 substrate is good, and the hardness and abrasion resistance of the coating are superior to those of substrate, the surface strengthening effect is obvious.
Key wordslaser cladding    Ni60 alloy    response surface method    process parameter    microhardness
收稿日期: 2024-05-21      出版日期: 2024-09-30
ZTFLH:  TG668  
基金资助:国家自然科学基金资助项目(42472381)
通讯作者: 刘丽兰,副教授,博士。电话:15353621358;E-mail: liulilans@163.com   
引用本文:   
刘丽兰, 杨帆, 豆卫涛, 张建广, 韩飞燕. 56NiCrMoV7钢激光熔覆Ni60合金涂层的质量预测与性能分析[J]. 粉末冶金材料科学与工程, 2024, 29(4): 263-274.
LIU Lilan, YANG Fan, DOU Weitao, ZHANG Jianguang, HAN Feiyan. Quality prediction and performance analysis of laser cladding Ni60 alloy coating on 56NiCrMoV7 steel. Materials Science and Engineering of Powder Metallurgy, 2024, 29(4): 263-274.
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