Microstructure evolution of a Zn-4wt.% Cu hyperperitectic alloy under laser surface remelting

Weidong Huang, Yunpeng Su, Meng Wang, Xin Lin

科研成果: 期刊稿件会议文章同行评审

摘要

Laser surface remelting experiments on Zn-4.0wt.%Cu hyperperitectic alloy have been performed on a 5kW CW CO2 laser with the scanning velocities between 6 and 1207mm/s. Microstructures in both longitudinal and transverse section of the molten pools have been analyzed by optical microscope and SEM technique, and the average composition in the molten pools has been measured by Electron Probe Microanalysis(EPMA). With the increasing of growth rate, the microstructures of Zn-4.0 wt.%Cu alloy change from planar interface to lamellar structures and then cellular structures, and finally to absolute stability planar interface at a growth rate of 562mm/s, which shows reasonable agreement with that predicted by M-S theory.

源语言英语
页(从-至)2611-2614
页数4
期刊Materials Science Forum
475-479
IV
DOI
出版状态已出版 - 2005
活动PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, 中国
期限: 2 11月 20045 11月 2004

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