何立子,李谢华,王向杰,张海涛,崔建忠

• 1:东北大学材料电磁过程研究教育部重点实验室
• 2:中铝瑞闽铝板带有限公司

摘要(Abstract)：

采用差热分析(DSC)、电导率和拉伸性能测试并结合光学显微镜(OM)、X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)及能谱分析(EDS)等分析手段,研究了低频电磁铸造5083(Er)铝合金的过烧行为和不同均匀化温度下的组织和力学性能。结果表明:随均匀化温度的升高,合金的抗拉强度逐渐升高在510℃达最大值而后略有降低;电导率在490℃升至最高,在490～520℃间保持不变,在540℃急剧降低。通过组织观察、DSC实验和电导率测试综合确定合金的过烧温度为540℃。在470℃均匀化时,在组织中观察到大量100～700μm的MnAl6/FeMnAl6板条;在490℃均匀化时,开始有5～20nm的ErAl3相颗粒析出,位错是它们析出的择优地点;510℃均匀化时,MnAl6/FeMnAl6和ErAl3相最多;温度继续升高,这些相发生粗化而数量减少。

关键词(KeyWords)： 5083(Er)铝合金;铒;均匀化;组织;性能

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划项目(2007BAE38B01)

作者(Author): 何立子,李谢华,王向杰,张海涛,崔建忠

DOI: 10.13289/j.issn.1009-6264.2010.08.019

参考文献(References)：

• [1]Lundin R,Wilson J R.Rare earth metals[J].Adv Mater Proc,2000,158(1):52-55.
• [2]杨福宝,刘恩克,徐骏,等.Er对Al-Mg-Mn-Zn-Sc-Zr-(Ti)填充合金凝固组织与力学性能的影响[J].金属学报,2008,44(8):911-916.YANG Fu-bao,LIU Ke-en,XU Jun,et al.Effects of Er on the microstructures and mechanical properties of as-cast Al-Mg-Mn-Zn-Sc-Zr-(Ti)filler metals[J].Acta Metallurgica Sinica,2008,44(8):911-916.
• [3]刑泽炳,聂祚仁,邹景霞,等.Al-Er合金铸锭中铒的存在形式及作用研究[J].中国稀土学报,2007,25(2):234-238.XING Ze-bing,NIE Zuo-ren,YANG Jun-jun,ZOU Jing-xia,et al.Existing Form and Effect of Erbium in Al-Er Alloy[J].Journal of the Chinese Rare Earth Society,2007,25(2):234-238.
• [4]余胜文,王为,杨军军,等.Al-5Mg-Er合金中Al3Er相的析出及其热力学计算分析[J].中国稀土学报,2006,24(4):470-474.YU Sheng-wen,WANG Wei,YANG Jun-jun,et al.Thermodynamic calculation and precipitation behavior of Al3Er phase in Al-5Mg-Er alloy[J].Journal of the Chinese Rare Earth Society,2006,24(4):470-474.
• [5]杨军军,聂祚仁,金头男,等.稀土铒在Al-Zn-Mg合金中的存在形式与细化机理[J].中国有色金属学报,2004,14(4):620-626.YANG Jun-jun,NIE Zuo-ren,JIN Tou-nan,et al.Form and refinement mechanism of element Er in Al-Zn-Mg alloy[J].The Chinese Journal of Nonferrous Metals,2004,14(4):620-626.
• [6]Rosalbino F,Angelini E,De Negri S,et al.Influence of the rare earth content on the electrochemical behaviour of Al-Mg-Er alloys[J].Intermetallics,2003,11(5):435-441.
• [7]Nie Z R,Jin T N,Zou J X,et al.Development on research of advanced rare-earth aluminum alloy[J].Trans Nonferrous Met Soc China,2003,13(3):509-514.
• [8]Yang J J,Nie Z R,Jin T N,et al.Effect of trace rare earth element Er on high pure Al[J].Trans Nonferrous Met Soc China,2003,13(5):1035-1039.
• [9]徐国富,聂祚仁,金头男,等.微量铒对LF3铝合金铸态组织的影响[J].中国稀土学报,2002,20(2):143-145.XU Guo-Fu,NIE Zuo-ren,JIN Tou-nan,et al.Effects of trace erbium on casting microstructure of LF3Al-alloy[J].The Chinese Journal of Nonferrous Metals,2002,20(2):143-145.
• [10]Dong J,Cui J Z,Le Q C,et al.Liquidus semi-continuous casting,reheating and thixoforming of a wrought aluminum alloy7075[J].Mater Sci Eng A,2003,345(1-2):234-242.
• [11]Ratchev P,Verlinden B,Vanhoutte P.Effect of reheat temperature on the orientation relationship of(Mn,Fe)Al6precipitates in an AA5182aluminum-magnesium alloy[J].Acta Metall Mater,1995,43(2):621-629.
• [12]雷广孝.稀土在铝及铝合金中的作用和应用概况[J].轻合金加工技术,1990,(2):5-10.LEI Guang-xiao.Effects and applications of rare metals on Al and Al alloys[J].Light Alloy Fabrication Technology,1990,(2):5-10.

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