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| 金属基陶瓷复合材料的激光热冲击破坏效应 | |
| 引用本文： | 周益春 袁辉球. 金属基陶瓷复合材料的激光热冲击破坏效应[J]. 强激光与粒子束, 1997, 9(3): 451-457 |
| 作者姓名： | 周益春 袁辉球 |
| 作者单位： | 湘潭大学物理系,湖南411105;中国科学院力学研究所,材料动力学及激光与物质相互作用实验室,北京 100080 |
| 基金项目： | 国家863激光技术领域,国家自然科学基金,湖南省教委资助 |
| 摘 要： | 研究了激光热冲击条件下静态受拉Sic颗粒增强6061铝合金材料的热断裂行为。热冲击用的激光束的脉宽分别为1.0ms和250μs, 激光束辐照在缺口的根部附近。对于热冲击下裂纹的产生及扩展进行细致的宏、微观观察,发现裂纹的产生和扩展的机制是不相同的。 |
| 关 键 词： | 金属基陶瓷 激光热冲击 热失配 |
| 收稿时间： | 1900-01-01; |
Failure Effect of SiC Particulate Reinforced Metal Matrix Composites Induced by Laser Thermal Shocking |
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| Zhou YiChun,Yuan Huiqiou,and Duan Zhuping et al.. Failure Effect of SiC Particulate Reinforced Metal Matrix Composites Induced by Laser Thermal Shocking[J]. High Power Laser and Particle Beams, 1997, 9(3): 451-457 | |
| Authors: | Zhou YiChun Yuan Huiqiou and Duan Zhuping et al. |
| Abstract: | Thermal failure of SiC particulate reinforced 6061 aluminium alloy composites induced by the coupled loading with both laser thermal shocking and mechanical loading has been investigated. In the test, a pulsed Nd:glass laser beam is used with duration 1.0ms and 250(s, The notched-tip region of the specimen is subjected to laser beam rapid heating. The crack-tip process zone development and the microcracks formation are macroscopically and microscopically observed. It is found that the mechanisms for the cracks formation are different from those for the crack expansion. |
| Keywords: | ceramic particulate reinforced metal matrix composites laser thermal shocking thermal expansion mismatch. |
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