多主元高熵合金AlFeCuCoNiCr的微观结构
Microstructure of AlFeCuCoNiCr High-entropy Alloy with Multi-principal Elements
摘 要
依据多主元高熵合金的设计理念, 采用真空电弧炉熔炼等摩尔比多主元高熵合金AlFeCuCoNiCr, 研究合金的组织结构。研究发现: AlFeCuCoNiCr合金的铸态组织是典型的树枝晶, 并有纳米析出相和非晶相形成; 合金存在严重的成分偏析现象, 铜偏聚于枝晶间; 合金形成了简单的面心立方+体心立方(FCC+BCC)结构和少量金属间化合物。
多主元高熵合金
成分偏析
超点阵
纳米析出
非晶相
AlFeCuCoNiCr
high-entropy alloy with multi-principal elements
composition segregation
super lattice structure
nanoprecipitates
amorphous phase
Abstract
According to the design concept of high-entropy alloy with multi-principal elements, AlFeCuCoNiCr high-entropy alloy was prepared by vacuum arc melting in equimolar ratio to investigate the microstructure. The results showed that the alloy was typical dendritic structure; nanoprecipitates and amorphous phase appeared in alloy; the composition segregation was very serious, Cu gathered in the interdendritic region; the alloy was composed of FCC, BCC and a little intermetallic compounds.
中图分类号 TG146.2
所属栏目
基金项目 山东科技大学科技创新基金(YCA100424)
收稿日期 2010/11/23
修改稿日期
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备注郭娜娜(1987-), 女, 硕士研究生。
引用该论文: GUO Na-na,SUN Hong-fei,WANG gang,NIU Zhan-rui,YUAN Bo,LI Zhong-li. Microstructure of AlFeCuCoNiCr High-entropy Alloy with Multi-principal Elements[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2011, 47(7): 407～410
郭娜娜,孙宏飞,王刚,牛占蕊,袁博,李忠丽. 多主元高熵合金AlFeCuCoNiCr的微观结构[J]. 理化检验－物理分册, 2011, 47(7): 407～410
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参考文献
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【3】TONG Chung-jin, CHEN Yu-liang, CHEN Swe-kai, et al.microstructure characterization of AlxCoCrCuFeNi high-entropy alloy system with multi-principal elements [J].Metallurgical and Materials Transactions A, 2005, 36(4):881-893.
【4】YEH Jien-wei, CHEN Swe-kai, GAN Jon-yiew, et al.Formation of simple crystal structures in Cu-Co-Ni-Cr-Al-Fe-Ti-V alloys with multi-principal metallic elements [J].Metallurgical and Materials Transactions, 2004, 35A:2533-2536.
【5】陈敏, 刘源, 李言祥, 等.多主元高熵合金AlFeTiNiCuCrx 微观结构和力学性能[J] .金属学报, 2007, 43(10):1020-1024.
【6】郝新江, 刘慧卿, 郝士明, 等.具有失稳分解强化的Hall-Petch关系[J].东北大学学报, 2002, 23(2):137-140.
【7】刘源, 陈敏, 李言祥, 等.Cr含量对AlTiFeNiCuCrx多主元高熵合金凝固模式和微观结构的影响[J].特种铸造及有色合金, 2008(s1):87-89.
【8】TUNG Chung-chin, YEH Jien-wei, SHUN Tao-tsung, et al.On the elemental effect of AlCoCrCuFeNi high-entropy alloy system [J].Materials Letters, 2007, 61:1-5.
【9】胡赓祥, 蔡荀, 戎咏华.材料科学基础[M] .上海: 上海交通大学出版社, 2006:54.
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