含Er 5083合金均匀化退火过程中Al3Er相的TEM观察

金属学报, 2009, 45(8): 978-982. doi: 10.3321/j.issn:0412-1961.2009.08.013

含Er 5083合金均匀化退火过程中Al3Er相的TEM观察

林双平 ^1, , 黄晖 ^2, , 文胜平 ^3, , 聂祚仁 ^4,

1.北京工业大学材料科学与工程学院,北京,100124

2.北京工业大学材料科学与工程学院,北京,100124

3.北京工业大学材料科学与工程学院,北京,100124

4.北京工业大学材料科学与工程学院,北京,100124

基金项目: 国家高技术研究发展计划(863计划)(2006AA03A207;2007AA03Z514)

关键词：均匀化退火 , Al3Er , 共格/半共格

TEM OBSERVATION OF THE A13Er PHASE DURING HOMOGENIZING OF THE 5083 ALLOY WITH Er ADDITION

对半连续铸造的Al-4.6Mg-0.7Mn-0.1Zr-0.3Er(5083)合金均匀化退火过程中析出的Al3Er相的显微组织进行了透射电镜观察.结果表明,铸锭的均匀化退火过程中,合金中析出了大量的不同形状、尺寸的沉淀物,其中尺寸在10-50 nm之间的球形析出物为Al3Er相,它与基体保持共格/半共格关系.计算分析得出Al3Er粒子共格/半共格转换半径为rt=9.44 nm,与实验结果相近.

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含Er 5083合金均匀化退火过程中Al3Er相的TEM观察

TEM OBSERVATION OF THE A13Er PHASE DURING HOMOGENIZING OF THE 5083 ALLOY WITH Er ADDITION

参考文献