p/Al-6%Mg復(fù)合材料; 析出物; 腐蝕"/> p/Al-6%Mg復(fù)合材料,并對其進行4種熱處理工藝(T1, T4, T6和退火)處理,研究了熱處理工藝對SiCp/Al-6%Mg復(fù)合材料微觀組織和腐蝕行為的影響。結(jié)果表明,復(fù)合材料在4種熱處理工藝下均出現(xiàn)了界面反應(yīng)產(chǎn)物Si、MgA12O4 和 Mg2Si。界面反應(yīng)產(chǎn)物析出量(f)與熱處理工藝密切相關(guān),并呈現(xiàn)出如下規(guī)律：fT1< fT4< fT6annealing。界面反應(yīng)析出物是導致復(fù)合材料發(fā)生點蝕的主要原因,從而促進復(fù)合材料發(fā)生腐蝕。熱處理工藝能影響界面反應(yīng)析出量而間接影響復(fù)合材料的腐蝕速度(jcorr)：jcorr-T6> jcorr-T4> jcorr-T1。"/>

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熱處理對SiCp/Al-6%Mg復(fù)合材料微觀組織及腐蝕行為影響
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南昌航空大學,南昌航空大學,南昌航空大學

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國家自然科學基金項目（面上項目，重點項目，重大項目）


Effects of heat treatment on microstructure and corrosion behavior in SiCp/Al-6%Mg composites
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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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    摘要:

    采用無壓滲透法制備了SiCp/Al-6%Mg復(fù)合材料,并對其進行4種熱處理工藝(T1, T4, T6和退火)處理,研究了熱處理工藝對SiCp/Al-6%Mg復(fù)合材料微觀組織和腐蝕行為的影響。結(jié)果表明,復(fù)合材料在4種熱處理工藝下均出現(xiàn)了界面反應(yīng)產(chǎn)物Si、MgA12O4 和 Mg2Si。界面反應(yīng)產(chǎn)物析出量(f)與熱處理工藝密切相關(guān),并呈現(xiàn)出如下規(guī)律：fT1< fT4< fT6annealing。界面反應(yīng)析出物是導致復(fù)合材料發(fā)生點蝕的主要原因,從而促進復(fù)合材料發(fā)生腐蝕。熱處理工藝能影響界面反應(yīng)析出量而間接影響復(fù)合材料的腐蝕速度(jcorr)：jcorr-T6> jcorr-T4> jcorr-T1。

    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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崔霞,周賢良,歐陽德來.熱處理對SiCp/Al-6%Mg復(fù)合材料微觀組織及腐蝕行為影響[J].稀有金屬材料與工程,2016,45(12):3086~3088.[Cui Xia, Zhou Xianliang, 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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  • 收稿日期:2015-12-20
  • 最后修改日期:2016-02-15
  • 錄用日期:2016-03-30
  • 在線發(fā)布日期: 2017-02-06
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