| 金属粉末激光烧结的动态凝固特征 |
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| 引用本文： | 张剑峰,王晖,崔益军.金属粉末激光烧结的动态凝固特征[J].扬州大学学报(自然科学版),2006,9(1):31-34. |
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| 作者姓名： | 张剑峰 王晖 崔益军 |
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| 作者单位： | 扬州大学,机械工程学院,江苏,扬州,225009 |
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| 基金项目： | 江苏省教育厅自然科学基金资助项目(05KJB460155) |
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| 摘 要： | 在实验的基础上,分析了激光烧结成形过程中的凝固组织特征及其形核机制,讨论了烧结工艺参数和运动熔池形状特征对动态凝固特征的影响.对烧结体进行分析的结果表明:烧结体的组织是以枝晶和等轴晶二种组织形态交替叠加而成,形成整个制件的组织呈周期性重复出现.
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| 关 键 词： | 激光选区烧结 金属粉末 凝固 显微组织 |
| 文章编号： | 1007-824X（2006）01-0031-04 |
| 收稿时间： | 2005-02-18 |
| 修稿时间： | 2005-02-18 |
Dynamical solidification characteristic of laser sintering metallic powder |
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| ZHANG Jian-feng,WANG Hui,CUI Yi-jun.Dynamical solidification characteristic of laser sintering metallic powder[J].Journal of Yangzhou University(Natural Science Edition),2006,9(1):31-34. |
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| Authors: | ZHANG Jian-feng WANG Hui CUI Yi-jun |
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| Institution: | Coll of Meeh Engin, Yangzhou Univ, Yangzhou 225009, China |
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| Abstract: | On the basis of experiments,the solidification microstructures and their nucleation models are analyzed.The effect of the technological parameters and the shape of moving molten pool are discussed.The experimental results show that sintering parts is composed of many layers,one on another.Each layer is composed of two kinds of dendriter and equivalent dendriter. |
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| Keywords: | selective laser sintering metallic powder solidification microstructure |
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