共 39 条
Influence of Al, Cu and Mn additions on diffusion behaviors in CoCrFeNi high-entropy alloys
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作者:

Chen, Juan
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机构:
Yangzhou Univ, Testing Ctr, Yangzhou 225009, Peoples R China
Yangzhou Univ, Sch Mech Engn, Yangzhou 225009, Peoples R China Yangzhou Univ, Testing Ctr, Yangzhou 225009, Peoples R China

Zhang, Zhen-zhong
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机构:
Yangzhou Univ, Sch Mech Engn, Yangzhou 225009, Peoples R China Yangzhou Univ, Testing Ctr, Yangzhou 225009, Peoples R China

Xiao, Jin-kun
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机构:
Yangzhou Univ, Sch Mech Engn, Yangzhou 225009, Peoples R China Yangzhou Univ, Testing Ctr, Yangzhou 225009, Peoples R China

Zhang, Li-jun
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机构:
Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China Yangzhou Univ, Testing Ctr, Yangzhou 225009, Peoples R China
机构:
[1] Yangzhou Univ, Testing Ctr, Yangzhou 225009, Peoples R China
[2] Yangzhou Univ, Sch Mech Engn, Yangzhou 225009, Peoples R China
[3] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Co-Cr-Fe-Ni;
high-entropy alloy;
diffusion;
interdiffusivity;
diffusion couple;
SELF-DIFFUSION;
INTERDIFFUSION COEFFICIENTS;
SLUGGISH DIFFUSION;
TRACER DIFFUSION;
SOLID-SOLUTIONS;
PHASE;
IRON;
D O I:
10.1016/S1003-6326(24)66673-2
中图分类号:
TF [冶金工业];
学科分类号:
0806 ;
摘要:
The interdiffusion coefficients in Al0.2CoCrFeNi, CoCrCu0.2FeNi, and CoCrFeMn0.2Ni high-entropy alloys were efficiently determined by combining diffusion couple experiments and high-throughput determination of interdiffusion coefficients (HitDIC) software at 1273-1373 K. The results show that the addition of Al, Cu, and Mn to CoCrFeNi high-entropy alloys promotes the diffusion of Co, Cr, and Fe atoms. The comparison of tracer diffusion coefficients indicates that there is no sluggish diffusion in tracer diffusion on the thermodynamic temperature scale for the present Al0.2CoCrFeNi, CoCrCu0.2FeNi, and CoCrFeMn0.2Ni high-entropy alloys. The linear relationship between diffusion entropy and activation energy reveals that the diffusion process of atoms is unaffected by an increase in the number of components as long as the crystal structure remains unchanged.
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页码:184 / 193
页数:10
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