Effect of Cu content on the defect evolution in Fe-Cu alloys investigated by PALS

The International Workshop on Positron Studies of Defects 2014

Cao, X.Z.^1 ; Lai, X.^1,2 ; Cheng, G.D.^1 ; Jin, S.X.^1 ; Zhang, X.^2 ; Zhang, P.^1 ; Wang, B.Y.^1

Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, CAS, Beijing

100049, China^1

Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu

610064, China^2

关键词: Cold-rolled deformation;    Cu alloy;    Cu content;    Defect evolution;    Fe-Cu alloys;    Isochronal annealing;    Positron annihilation lifetime spectroscopy;    Vacancy complexes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/674/1/012003/pdf
DOI  :  10.1088/1742-6596/674/1/012003

来源: IOP

【 摘 要 】

The effect of Cu content on the evolution of defects in Fe-x%Cu alloys (x= 0.15, 0.3, and 0.6) were investigated using Positron Annihilation Lifetime Spectroscopy (PALS). The vacancy-type and Cu-vacancy complexes defects were respectively produced by quenching from 1173 K and cold-rolled deformation followed by isochronal annealing. The PALS results with isochronal annealing showed that the temperature of defects recovery increased in deformed Fe-Cu alloys with Cu content. The increment of Cu content also restrained the migration of vacancies in as-quenched Fe-Cu alloys.