[1]许明三,戴腾运,江吉彬,等.不锈钢基体激光熔覆Ni60A的残余应力研究[J].福建工程学院学报,2016,14(06):557-562.[doi:10.3969/j.issn.1672-4348.2016.06.009]
　Xu Mingsan,Dai Tengyun,Jiang Jibin,et al.Research of residual stress in laser cladding of Ni60A on stainless steel[J].Journal of FuJian University of Technology,2016,14(06):557-562.[doi:10.3969/j.issn.1672-4348.2016.06.009]
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不锈钢基体激光熔覆Ni60A的残余应力研究()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第14卷
期数:
2016年06期
页码:
557-562
栏目:
出版日期:
2016-12-25

文章信息/Info

Title:
Research of residual stress in laser cladding of Ni60A on stainless steel
作者:
许明三; 戴腾运; 江吉彬; 陈昌荣; 曾寿金
福建工程学院 机械与汽车工程学院
Author(s):
Xu Mingsan;  Dai Tengyun;  Jiang Jibin;  Chen Cangrong;  Zeng Shoujin
College of Mechanical and Automotive Engineering, Fujian University of Technology
关键词:
激光熔覆;  残余应力;  显微组织;  显微硬度;  不锈钢
Keywords:
laser cladding;  residual stress;  microstructure;  micro-hardness;  stainless steel
分类号:
TG115
DOI:
10.3969/j.issn.1672-4348.2016.06.009
文献标志码:
A
摘要:
选择激光功率、扫描速度、送粉量为影响因素，用正交试验方法研究了不锈钢基体激光熔覆Ni60A的残余应力；结果表明：影响残余应力的关键因素为扫描速度，其次是激光功率，最后为送粉量；扫描速度180 mm/min、激光功率1.5 kW、送粉量3 g/s产生最小残余应力；此时熔覆材料Ni60A与基体形成良好的冶金结合，熔覆层组织均匀，无微裂纹等明显缺陷。研究结果为叶轮和螺杆的激光熔覆再制造提供了实验依据。
Abstract:
The effects of laser power, scanning speed and powder feed rate on the residual stress of laser cladding Ni60A on stainless steel substrate were investigated via orthogonal experiments. The experimental results show that the most significant parameter affecting the residual stress is scanning speed, followed by the laser power and feed rate. When the scanning speed is 180mm/min, the laser power is 1.5kW and the powder feeding rate is 3g/s, the residual stress is the minimum. Under the optimal condition, a favourable metallurgical bonding forms between the substrate and cladding powder with a uniform cladding layer of crystal microstructure without minor defection. The results can provide an empirical basis for laser cladding of impellers and screws.

参考文献/References:

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[3] 钟叙. 不锈钢金属粉末零部件烧结过程的热力耦合有限元分析[D].西安：西南交通大学，2010.
[4] 王雪光. 浅谈激光熔覆技术在石化机械维修中的应用[J]. 城市建设理论研究（电子版），2013（8）：34-40.
[5] Khlera H，Partesa K，Vollertsena F．Residual stresses in steel specimens induced by laser cladding and their effect on fatigue strength[J]. Physics Procedia,2008,39(6)：354-361.
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更新日期/Last Update: 2016-12-25