Laser surface hardening of 42CrMo cast steel for obtaining a wide and uniform hardened layer by shaped beams
文献类型：期刊论文
| 作者 | Sun PP(孙培培); Li SX(李少霞) ; Yu G(虞钢); He XL(何秀丽); Zheng CY(郑彩云); Ning WJ(宁伟健)
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| 刊名 | INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
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| 出版日期 | 2014-02 |
| 卷号 | 70期号:5-8页码:787-796 |
| 通讯作者邮箱 | pipnus@yahoo.cn |
| 关键词 | Laser surface hardening (LSH) 42CrMo cast steel Laser beam shaping Strip array spots |
| ISSN号 | 0268-3768 |
| 产权排序 | [Sun, Peipei] Basic Technol Res Ctr, AVIC Engine Estab, Beijing 100028, Peoples R China; [Li, Shaoxia; Yu, Gang; He, Xiuli; Zheng, Caiyun; Ning, Weijian] Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China |
| 通讯作者 | Sun, PP (reprint author), Basic Technol Res Ctr, AVIC Engine Estab, Beijing 100028, Peoples R China. |
| 合作状况 | 国内 |
| 中文摘要 | For laser surface hardening (LSH) of large-sized workpieces, a wide and uniform hardened layer of a single track is pursued. In this study, two kinds of shaped laser beams were used in LSH of 42CrMo cast steel to obtain the required hardened layer. One is a stripy spot with uniform-intensity array spots and the other a stripy spot with intensity blowup in the edge of the whole array spots. As a comparison, a Gaussian laser beam was also adopted. A three-dimensional finite element model was used to simulate the thermal history of specific points by the latter shaped beam and the Gaussian laser beam. The surface morphology, microstructure, microhardness, and uniformity of hardened layers were studied. The results showed that a wider and more uniform hardened layer could be obtained using the latter shaped beam at relative higher scanning velocities and laser power. The thermal history of a material has an important effect on the microstructure and microhardness finally formed. Due to the high peak temperature and heating rate caused by the latter shaped beam, a higher value of microhardness in the transformation hardened zone was found. |
| 学科主题 | Automation & Control Systems; Engineering |
| 分类号 | 二类/Q2 |
| 收录类别 | SCI ; EI |
| 资助信息 | This work was supported by the National Natural Science Foundation of China under grant no. 10832011. |
| 原文出处 | http://dx.doi.org/10.1007/s00170-013-5292-3 |
| 语种 | 英语 |
| WOS记录号 | WOS:000330841500003 |
| 公开日期 | 2014-05-12 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/48798]  |
| 专题 | 力学研究所_先进制造工艺力学重点实验室 |
| 推荐引用方式 GB/T 7714 | Sun PP,Li SX,Yu G,et al. Laser surface hardening of 42CrMo cast steel for obtaining a wide and uniform hardened layer by shaped beams[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2014,70(5-8):787-796. |
| APA | Sun PP,Li SX,Yu G,He XL,Zheng CY,&Ning WJ.(2014).Laser surface hardening of 42CrMo cast steel for obtaining a wide and uniform hardened layer by shaped beams.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,70(5-8),787-796. |
| MLA | Sun PP,et al."Laser surface hardening of 42CrMo cast steel for obtaining a wide and uniform hardened layer by shaped beams".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 70.5-8(2014):787-796. |
入库方式： OAI收割
来源：力学研究所
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