| Mg2O2B5w/AZ91D复合材料热膨胀行为研究 |
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| 引用本文： | 易秋菊.Mg2O2B5w/AZ91D复合材料热膨胀行为研究[J].广东化工,2012,39(1):9-11. |
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| 作者姓名： | 易秋菊 |
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| 作者单位： | 成都理工大学材料与化学化工学院,四川成都,610059 |
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| 摘 要： | 文章研究了未经热处理处理、人工时效(200℃,16 h)和固溶(415℃,24 h)时效(200℃,8 h)的Mg2O2B5w/AZ91D复合材料的热膨胀行为。结合它们的维氏硬度和金相,得出析出相的数量越多,热膨胀系数越低;残余应力值越小,CTE到达峰值的温度越低。固溶时效样品的热膨胀系数在286.2℃时达到最大值2.60×10-5/K,时效样品的热膨胀系数在244.8℃时达到最大值CTE 2.19×10-5/K。
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| 关 键 词： | AZ91D 硼酸镁晶须 热膨胀系数 热处理 |
The Thermal Expansion Behavior of Mg2O2B5w/AZ91D Magnesium Matrix Composites |
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| Affiliation: | Yi Qiujv(College of Materials and Chemistry and Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China) |
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| Abstract: | The paper mainly researches the thermal expansion of composite materials Mg2O2B5w/AZ91D,which happens under untreated,artificial aging and solution plus aging.Combined with the analysis of their hardness and microstructure,we learn that the more the number of precipitates is the lower coefficient of thermal expansion is and the lower residual stress is.However,the lower the temperature is,the lower the maximum is.At this time,the sample that solution（24 h） plus aging（8 h）＇s CTE has a maximum of 2.60 × 10^-5 / K,while the sample that aging reaches a maximum of 16 h of 2.19 × 10^-5/K. |
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| Keywords: | AZ91D magnesium borate whisker thermal expansion coefficient |
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