| 热处理对SiCp/Al-6%Mg复合材料微观组织及腐蚀行为影响 |
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| 引用本文： | 崔霞,周贤良,欧阳德来. 热处理对SiCp/Al-6%Mg复合材料微观组织及腐蚀行为影响[J]. 稀有金属材料与工程, 2016, 45(12): 3086-3088 |
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| 作者姓名： | 崔霞 周贤良 欧阳德来 |
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| 作者单位： | 南昌航空大学,南昌航空大学,南昌航空大学 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 采用无压渗透法制备了SiCp/Al-6%Mg复合材料,并对其进行4种热处理工艺(T1, T4, T6和退火)处理,研究了热处理工艺对SiCp/Al-6%Mg复合材料微观组织和腐蚀行为的影响。结果表明,复合材料在4种热处理工艺下均出现了界面反应产物Si、MgA12O4 和 Mg2Si。界面反应产物析出量(f)与热处理工艺密切相关,并呈现出如下规律：fT1< fT4< fT6annealing。界面反应析出物是导致复合材料发生点蚀的主要原因,从而促进复合材料发生腐蚀。热处理工艺能影响界面反应析出量而间接影响复合材料的腐蚀速度(jcorr)：jcorr-T6> jcorr-T4> jcorr-T1。
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| 关 键 词： | 热处理 SiCp/Al-6%Mg复合材料 析出物 腐蚀 |
| 收稿时间： | 2015-12-20 |
| 修稿时间： | 2016-02-15 |
Effects of heat treatment on microstructure and corrosion behavior in SiCp/Al-6%Mg composites |
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| Cui Xi,Zhou Xianliang and Ouyang Delai. Effects of heat treatment on microstructure and corrosion behavior in SiCp/Al-6%Mg composites[J]. Rare Metal Materials and Engineering, 2016, 45(12): 3086-3088 |
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| Authors: | Cui Xi Zhou Xianliang Ouyang Delai |
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| Affiliation: | School of Material Science and Engineering,Nanchang Hangkong University,Nanchang,P.R. China,School of Material Science and Engineering,Nanchang Hangkong University,Nanchang,P.R. China,School of Material Science and Engineering,Nanchang Hangkong University,Nanchang,P.R. China |
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| Abstract: | The present work examines the influence of heat treatment on the microstructure related to the interfacial reaction and corrosion behavior of SiCp/Al-6%Mg composites prepared by using a pressureless infiltration technique. The experimental results show the occurrence of the precipitates of Si, MgA12O4 and Mg2Si as a result of the interfacial reaction between the SiC particle and matrix of the composites during heat treatment. The precipitates contents(f) of composites are correlated with T1, T4, T6 and annealing heat treatment, following the order of fT1< fT4< fT6annealing. The precipitates located near SiC particles are responsible to pitting corrosion as a degradation mechanism of the composites. The heat treatments carried out on the composites present a significant influence on the corrosion rate (jcorr). The correlation between jcorr and heat treatment present the characteristics of jcorr-ann> jcorr-T6> jcorr-T4> jcorr-T1, which may be attributed to the the interfacial reaction precipitates of the composites during heat treatment. |
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| Keywords: | corrosion, SiCp/Al-6%Mg composite, heat treatment, precipitates |
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