Effects of Beryllium on High Temperature Oxidation Behavior of Al-34%Mg Eutectic Alloys
摘 要
为提高铝镁合金的高温抗氧化性能,以合金化的方式在Al-34%Mg共晶合金中添加不同含量的铍元素,将所得合金分别于空气中在420 ℃进行准连续恒温氧化试验和从470 ℃到室温循环氧化试验,对其氧化行为进行了研究.结果表明:加入微量(≥0.01%)铍能提高共晶合金在固、液态时的高温抗氧化能力,并能改善氧化层的粘附性与自愈能力;含有BeO的氧化膜大大降低了合金表面氧化物的生长速度.
Abstract
The Al-Mg alloy containing 34% Mg was added with different beryllium contents in the form of alloying for increasing the high temperature oxidation resistance.The obtained samples were oxidized in isothermal quasi-continuousness at 420 ℃ and in cyclic from 470 ℃ to room temperature in air and the oxidation behavior was analyzed.The results show that the high temperature oxidation resistance of the alloy with trace content (≥0.01%) of Be in solid state and in liquid state was enhanced and the adhesion and self-cure capability of oxide flims were improved.The growth rate of the oxide films with BeO was greatly decreased on the surface of the alloys.
中图分类号 TG141 TB34
所属栏目 材料性能及其应用
基金项目 国家自然科学基金资助项目(59876010)
收稿日期 2008/4/3
修改稿日期 2009/3/5
网络出版日期
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备注孙建强(1964-),男,广东广州人,副教授,博士.
引用该论文: SUN Jian-qiang,ZHONG Run-ping,WANG Wen-yan,ZHANG Ren-yuan. Effects of Beryllium on High Temperature Oxidation Behavior of Al-34%Mg Eutectic Alloys[J]. Materials for mechancial engineering, 2009, 33(5): 66~69
孙建强,钟润萍,王文焱,张仁元. 铍对Al-34%Mg共晶合金高温氧化行为的影响[J]. 机械工程材料, 2009, 33(5): 66~69
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【3】ACHARD P.Heat storage at 450℃ in aluminum-magnesium alloys[C]//Rational Utilization of Energy.Paris:Editions Europeennes Thermique et Industrie,1981:39-46.
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【5】HOUSKA C.Beryllium in aluminum and magnesium alloys[J].Metals & Materials,1988,14(2):100-105.
【6】WIKLE K B.Improving aluminum castings with beryllium[J].AFS Transactions,1978,6(8):119-125.
【7】FOERSTER G.A new approach to magnesium die casting[J].Advanced Materials & Processes,1998,15(9):79-81.
【8】孙建强,张仁元.金属相变储能与技术的研究与发展[J].材料导报,2005,19(8):99-101.
【9】李国藩.金属高温氧化和热腐蚀[M].北京:化学工业出版社,2003:20-21.
【10】周玉,武高辉.材料分析测试技术-材料X射线衍射与电子显微分析[M].哈尔滨:哈尔滨工业大学出版社,1998:10-11.
【11】周玉.材料分析方法[M].北京:机械工业出版社,2000:157-161.
【12】李国藩.金属高温氧化和热腐蚀[M].北京:化学工业出版社,2003:53-61.
【13】MOON D P.Role of reactive elements in alloy protection[J].Mater Sci Technol,1989,5:754-764.
【14】朱日彰,何业东,齐慧滨.高温腐蚀及耐高温腐蚀材料[M].上海:上海科学技术出版社,1995:20-21.
【15】ZENG X Q,WANG Q D,LU Y Z.Behavior of surface oxidation on molten Mg-9A1-0.5Be alloy[J].Journal of Materials Processing Technology,2001,112:17- 23.
【16】WHITTLE D J,STRINGER J.Improvements in high temperature oxidation resistance by additions of reactive elements or oxide dispersion[J].Phil Trans R Sox Lond A,1980,295:309-329.
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