Microstructure Evolution of Laser Pulse processed Ductile Iron Surface
文献类型：会议论文
| 作者 | Gan CH(甘翠华) ; Ba FH(巴发海); Yu G(虞钢); Yu G(虞钢); Yu G(虞钢)
|
| 出版日期 | 2002-09-17 |
| 会议名称 | 第三届亚太激光会议 APLS 2002,THLC4, |
| 会议日期 | 2002.9.17～20 |
| 会议地点 | 日本大阪 |
| 通讯作者 | 虞钢 |
| 中文摘要 | Pulsed laser beam was used to modify surface processing for ductile iron. The microstructures of processed specimen were observed using optical microscope (OM). Nanoindentation and micro-hardness of microstructures were measured from surface to inner of sample. The experimental results show that, modification zone is consisted of light melted zone, phase transformation hardening area and transient area. The light melt area is made up of coarse dendrite crystalline with a thickness less than 20um, phase transformation hardening area mainly of laminal or acicular martensite, retained austenite and graphite, i.e. M+A prime+ G. The cow-eye microstructure around graphite sphere always is formed in phase transformation hardening area zone, which consisting of a variety structure with the distance from the surface. So, it maybe as a obvious sign distinguishing modification zone border. Finally, the microstructures evolution of laser pulse processed ductile iron was analyzed coupling with beam energy distribution in space and laser pulse heating procession characteristics. The analysis shows that energy distribution of laser pulse has an important effect on microstructure during laser pulse modified ductile iron. Multi-scale and interlace arrangement are the important features for laser pulse modified ductile iron. Of microstructure. |
| 收录类别 | 其他 |
| 会议录 | 第三届亚太激光会议文集
 |
| 学科主题 | 力学 |
| 语种 | 英语 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/13954]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 通讯作者 | Yu G(虞钢) |
| 推荐引用方式 GB/T 7714 | Gan CH,Ba FH,Yu G,et al. Microstructure Evolution of Laser Pulse processed Ductile Iron Surface[C]. 见:第三届亚太激光会议 APLS 2002,THLC4,. 日本大阪. 2002.9.17～20. |
入库方式： OAI收割
来源：力学研究所
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