Effect of component substitution on the microstructure and mechanical properties of MCoCrFeNiTix (M = Cu,Al) solid-solution alloys

稀有金属（英文版）, 2008, 27(6): 627-631.

^1, , ^2, , ^3, , ^4, , ^5,

1.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

2.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

3.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

4.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

5.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

基金项目: 教育部新世纪优秀人才支持计划(NCET-05-0105) 国家自然科学基金(50571018)

Effect of component substitution on the microstructure and mechanical properties of MCoCrFeNiTix (M = Cu,Al) solid-solution alloys

ZHOU Yunjun ^1, , ZHANG Yong ^2, , WANG Xuefei ^3, , WANG Yanli ^4, , CHEN Guoliang ^5,

1.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

2.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

3.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

4.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

5.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beifing 100083,China

Keywords： solid-solution alloys

MCoCrFeNiTix (M = Cu,Al;x:molar ratio,x = 0,0.5) alloys were prepared using the new alloy-design strategy of equal-atomic ratio and high entropy.By the component substitution of Al for Cu,the microstructure changes from the face-centered cubic solid solution of original CuCoCrFeNiTix alloys to the body-centered cubic solid solution of AICoCrFeNiTix alloys.Compared with original CuCoCrFeNiTix alloys,AICoCrFeNiTix alloys keep the similar good ductility and simultaneously possess a much higher compressive strength,which are even superior to most of the reported high-strength alloys like bulk metallic glasses.

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