深冷处理对SiC>p增强铝基复合材料热膨胀性能的影响
Influence of Cryogenic Treatment on Thermal Expansion Properties of SiC>p/Al CompositesOU
摘 要
采用熔铸搅拌法制备了不同含量SiCp增强铝基复合材料,研究了深冷处理对不同SiCp含量增强铝基复合材料热膨胀性能的影响.结果表明:增强颗粒越多,对材料膨胀的制约作用就越强,热膨胀系数越低;复合材料的热膨胀系数随温度升高而增大;复合材料的热膨胀系数和材料中的残余应力密切相关;复合材料经深冷处理并升回室温时,残余应力降低,热膨胀系数也降低;深冷次数越多,热膨胀系数越小.
深冷处理
热膨胀系数
aluminum matrix composites
cryogenic treatment
coefficient of thermal expansion
Abstract
Different SiCp/Al composites were fabricated with molten-stirring method.The influence of cryogenic treatment on thermal expansion properties of different SiCp/Al composites was studied.The results show that SiCp could inhibit the expansion of the material well,and the coefficient of(CTE) thermal expansion beeame lower with the increase of SiCp content.The CTE of the composites increased with the temperature rising.The CTE was related to residual stress.The residual stress and CTE of the composites after cryogenic treatment decreased at room temperature.The more the cryogenic treatment times of the composites,the lower the CTE.
中图分类号 TG178
所属栏目 试验研究
基金项目 上海市科委重点攻关项目(075211012)
收稿日期 2009/1/9
修改稿日期 2009/10/8
网络出版日期
作者单位点击查看
备注欧阳求保(1967-),男,湖南平江人,副教授,博士.
引用该论文: YANG Qiu-bao,CUI Guang-hua,ZHANG Di,ZHANG Guo-ding. Influence of Cryogenic Treatment on Thermal Expansion Properties of SiC>p/Al CompositesOU[J]. Materials for mechancial engineering, 2010, 34(2): 18～20
欧阳求保,崔光华,张荻,张国定. 深冷处理对SiC>p增强铝基复合材料热膨胀性能的影响[J]. 机械工程材料, 2010, 34(2): 18～20
被引情况:
【1】裴和君,欧阳求保,张荻,虞红, "真空压力浸渗法制备金刚石/铝复合材料及其热性能",机械工程材料 38, 6-9(2014)
【2】盛欢,王泽华,邵佳,钱坤才,周泽华,吴射章, "高速列车制动盘材料的研究现状与展望",机械工程材料 40, 1-5(2016)
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参考文献
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