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首页 > 过刊浏览>2022年第51卷第5期 >1724-1734. DOI:10.12442/j.issn.1002-185X.20210374
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Cu-Sc中间合金在液态Al-Zr合金中的溶解
作者:
作者单位:

1.东北大学 材料电磁过程研究教育部重点实验室;2.东北大学 冶金学院

中图分类号:

TG146.21

基金项目:

国家自然科学基金(U1608252,U1708251,51574075);国家重点研发计划(2016YFB0300901),中央高校基本科研专项资金(N180905010)


Dissolution of Cu-Sc Master Alloy in Liquid Al-Zr alloy
Author:
Affiliation:

1.Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University;2.School of Metallurgy,Northeastern University

Fund Project:

National Natural Science Foundation of China (U1608252, U1708251, 51574075); National Key Research and Development Program (2016YFB0300901), Fundamental Research Fund for Central Universities (N180905010)

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    摘要:

    本文研究了Cu-20wt%Sc中间合金在液态Al-0.12wt%Zr合金中的溶解行为。发现随着保温温度提高和保温时间延长,含Sc质点的尺寸减小,面积分数降低,Al3Zr相质点尺寸也减小,面积分数也降低。凝固后在α Al基体中的Sc、Cu和Zr的固溶量随保温时间延长和保温温度提高都增加。保温一定时间后,部分溶解到溶体中的Sc原子被吸附到Al3Zr相表面,形成中间为Al3Zr相表面富Sc的结构。Sc和Zr联合加入后,合金凝固组织细小,随着保温温度提高和保温时间延长,合金凝固组织的晶粒尺寸略有增大。大量表面富Sc的Al3Zr质点为合金凝固提供了大量的异质形核核心,细化了合金组织。添加Cu-Sc中间合金的Al-Zr合金,均匀化退火后,同添加Al-Sc-Zr中间合金一样,也析出大量“芯壳”结构的Al3(Sc,Zr)相。

    Abstract:

    Dissolution behaviors of Cu-20%Sc master alloy in liquid Al-0.12%Zr alloy was studied in this paper. It was found that both size and areal fraction of particles bearing Sc and Al3Zr particles decreased,the solubility of Sc,Cu and Zr in α Al increased with increase in holding time and temperature. Part of Sc atoms was odsorbed on the surface of Al3Zr particles so that Al3Zr particles rich Sc on surface were formed. The microstructure of the alloy with Sc and Zr after solidification was fine observably. Average grain size of the alloy increased slightly with increase in holding time and temperature. Fine microstructure of the alloy with Zr and Sc is resulted from the a lot of stable nuclei of Al3(Zr,Sc) particles rich Sc on surface. Same as adding Al-Sc-Zr master alloy Al3(Sc,Zr) precipitated in the Al-Zr alloy added by Cu-Sc master alloy after homogenization.

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引用本文

崔建忠,王钊,王春新,王复越,王向杰. Cu-Sc中间合金在液态Al-Zr合金中的溶解[J].稀有金属材料与工程,2022,51(5):1724~1734.[Cui Jianzhong, Wang Zhao, Wang Chunxin, Wang Fuyue, Wang Xiangjie. Dissolution of Cu-Sc Master Alloy in Liquid Al-Zr alloy[J]. Rare Metal Materials and Engineering,2022,51(5):1724~1734.]
DOI：10.12442/j. issn.1002-185X.20210374

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  • 收稿日期:2021-04-27
  • 最后修改日期:2021-05-18
  • 录用日期:2021-06-22
  • 在线发布日期: 2022-06-09
  • 出版日期: 2022-05-30

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