| 铸铝激光熔融处理后的组织与性能 |
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| 引用本文： | 朱祖昌 邱Qiu.铸铝激光熔融处理后的组织与性能[J].激光技术,1996,20(6):335-337. |
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| 作者姓名： | 朱祖昌 邱Qiu |
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| 作者单位： | 1.上海工程技术大学, 上海, 200335 |
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| 摘 要： | 应用光学和电子显微镜及显微硬度计研究了铸造Al-Si合金经激光表面熔融处理后的组织和性能。指出,组织分熔化区、过度区和基体三层。在熔化区中树枝状先共晶α相的平均宽度由原始组织的20～40μm细化到2～3μm,同时共晶组织也被大大细化。这些变化使显微硬度值由67.4提高至109～115.
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| 关 键 词： | 激光材料加工 铝合金 热处理 显微组织 |
| 收稿时间： | 1995-09-06 |
| 修稿时间： | 1996-01-16 |
Microstructure and property of cast aluminium alloy after laser remelted treatment |
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| Zhu Zuchang,Qiu qiu.Microstructure and property of cast aluminium alloy after laser remelted treatment[J].Laser Technology,1996,20(6):335-337. |
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| Authors: | Zhu Zuchang Qiu qiu |
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| Affiliation: | Shanghai University of Engineering Science |
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| Abstract: | By means of the optical microscope,scanning electron microscope and microhardness meter,the paper deals with the microstructure and property of a cost aluminum alloy after laser remelted treatment.The microstructure can be divided into remelted zone,transition layer and substrate.In the remelted zone,the width of dendritical pro eutectic α phase has been fined to 2～3μm from 20～40μm original state.Meanwhile the eutectic microstructure has also been broken up extremely.These changes make the microhardness of the treated surface be increased to 109～115μm from 67.4. |
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| Keywords: | laser material processing aluminium alloy heat treatment microstructure |
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