Numerical simulation of thermal-mechanical process of Al-Si-Pb alloy treated by high current pulsed electron beam

吕晓霞; 李荣广; 安健

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Numerical simulation of thermal-mechanical process of Al-Si-Pb alloy treated by high current pulsed electron beam

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摘要

＜正＞The modified microstructure of Al-Si-Pb alloys irradiated by high current electron beam （HCPEB） reveals three distinct regions: a molten zone, an overlapped zone of heat-affected and quasistatic thermal stress-affected zone, and a transition zone followed by the substrate. The hardness and wear properties of the alloys were significantly improved. To better understand these changes in microstructure and properties, the physical model for the simulation of temperature and quasistatic stress fields was established. Based on experimental investigation and physical models, the temperature field and stress field were simulated for Al-Si-Pb alloy. The starting melting position, largest crater depth, melting layer thickness, and quasistatic stress distribution were obtained. These results reveal the mechanism of crater formation on the surface and improvement of hardness and wear resistance.

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《中国有色金属学报：英文版》 |2006年第s3期|1433-1436|共4页
作者
吕晓霞; 李荣广; 安健;
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作者单位

Key Laboratory of Automobile Materials Ministry of Education;

Jilin University;

Changchun 130025;

China;

Key Laboratory of Automobile Materials;

Ministry of Education;

Jilin University;

Changchun 130025;

China;

Key Laboratory of Automobile Materials;

Ministry of Ed;

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正文语种 chi
中图分类电加工机床及其加工;
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机译：Al-Si-Pb合金大电流脉冲电子束数值模拟弹坑准静态应力;

Numerical simulation of thermal-mechanical process of Al-Si-Pb alloy treated by high current pulsed electron beam

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