| Cu-Al系粉末压坯激光反应烧结研究 |
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| 引用本文： | 郭作兴,沈平,胡建东,王红颖. Cu-Al系粉末压坯激光反应烧结研究[J]. 激光技术, 2005, 29(1): 11-13 |
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| 作者姓名： | 郭作兴 沈平 胡建东 王红颖 |
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| 作者单位： | 1.吉林大学, 材料科学与工程学院, 教育部汽车材料重点实验室, 长春, 130025 |
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| 摘 要： | 通过对烧结温度的变化过程、产物相的形成与转变、致密化行为、硬度特征等细致的研究和分析,揭示了Cu-Al系粉末材料激光反应烧结的特性.结果表明,在激光输出功率800W、持续作用时间为16s的情况下,反应向试样的纵深方向发展,表现出剧烈、快速的蔓延燃烧特征,相的形成是在激光加热与反应阶段的短暂时间内完成.由于激光加热比常规电炉加热速度快,烧结试样均产生收缩,在Cu75Al25试样中出现了亚稳态马氏体(M)型Cu3Al相.
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| 关 键 词： | 粉末冶金 蔓延燃烧 激光烧结 马氏体 |
| 文章编号： | 1001-3806(2005)01-0011-03 |
| 收稿时间： | 2004-01-05 |
| 修稿时间： | 2004-01-05 |
A study on laser reaction sintering of Cu-Al system powder compacts |
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| GUO Zuo-xing,SHEN Ping,HU Jian-Dong,WANG Hong-Ying. A study on laser reaction sintering of Cu-Al system powder compacts[J]. Laser Technology, 2005, 29(1): 11-13 |
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| Authors: | GUO Zuo-xing SHEN Ping HU Jian-Dong WANG Hong-Ying |
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| Abstract: | Characteristics of Cu-Al powder alloys of reaction laser sintering are investigated by study on variation process of sintering temperature,transformation of product phase,densification behavior and hardness of samples.It is showed that under laser power 800W and irradiation time 16s,reaction of sample penetrates deeply,characterization of serious and rapid propagating sintering appers,and phases were formed within short time of reaction stage during laser heating.All of the samples shrinks,and metastable martensite(M) Cu 3Al is formed in Cu 75Al 25 alloy. |
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| Keywords: | powder metallurgy propagating sintering laser sintering shrinkage martensite |
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