激光硬化层均匀性受光束空间强度分布和作用时间的影响.采用二元光学变换技术得到光束中心线强度比值为1:2:3、3:2:1和1:1:1的5×5点阵光斑,研究这三种强度分布光斑对Q235钢脉冲激光硬化后表面形貌、硬化层形状、硬度及耐磨性的影响.结果表明,激光光斑的空间强度分布对Q235钢硬化层均匀性影响很大,1:2:3强度分布光斑作用下的材料表面形貌、硬化层均匀性、硬度均匀度均优于1:1:1强度分布光斑.
参考文献
| [1] | Sandven O.Laser Surface Transformation Hardening[A].ASM Metals Park,OH,1981 |
| [2] | 李俊昌.激光热处理优化控制研究[M].北京:冶金工业出版社,1995:12. |
| [3] | R. C. Reed;Z. Shen;J. M. Robinson;T. Akbay .Laser transformation hardening of steel: effects of beam mode, beam size, and composition[J].Materials Science and Technology: MST: A publication of the Institute of Metals,1999(1):109-118. |
| [4] | Michael K. H. Leung;H. C. Man;J. K. Yu .Theoretical and experimental studies on laser transformation hardening of steel by customized beam[J].International Journal of Heat and Mass Transfer,2007(23/24):4600-4606. |
| [5] | 何芳,吴钢,宋光明.曲边矩形光斑激光淬火的理论研究[J].天津工业大学学报,2003(05):17-20. |
| [6] | 王云山,王娟娟,朱福栋.激光热处理光束优化系统[J].中国激光,2008(11):1730-1734. |
| [7] | 崔春阳,虞钢,王立新,宁伟健,甘翠华.球墨铸铁变换激光束淬火性能的研究[J].金属热处理,2006(10):31-33. |
| [8] | Shao-Xia Li;Gang Yu;Cai-Yun Zheng;Xiu-Bo Liu .High-power laser beam shaping by inseparable two-dimensional binary-phase gratings for surface modification of stamping dies[J].Optics and Lasers in Engineering,2008(7):508-513. |
| [9] | Chen Y;Gan CH;Wang LX;Yu G;Kaplan A .Laser surface modified ductile iron by pulsed Nd : YAG laser beam with two-dimensional array distribution[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2005(1/4):316-321. |
| [10] | Shaoxia Li;Gang Yu;Caiyun Zheng;Qiaofeng Tan .Quasi-Dammann grating with proportional intensity array spots[J].Optics Letters,2008(18):2023-2025. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%