Studies of recrystallization in rhenium using positron annihilation spectroscopy

被引：3
|
作者：
Dryzek, Jerzy [1 ,3 ]
Wrobel, Miroslaw [2 ]
机构：
[1] Polish Acad Sci, Inst Nucl Phys, PL-31342, Krakow, Poland
[2] AGH Univ Sci & Technol, 30 Mickiewicza Ave, PL-30059 Krakow, Poland
[3] Inst Nucl Phys, Radzikowskiego 152, PL-31342 Krakow, Poland
来源：
SCRIPTA MATERIALIA | 2022年 / 221卷
关键词：
Rhenium; Static recrystallization; Annealing; Hardness test; Positron annihilation;
D O I：
10.1016/j.scriptamat.2022.114972
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Pure rhenium exposed to cold-rolling was subjected to annealing studies using positron annihilation techniques. The recovery and recrystallization processes were observed using these techniques and they were confirmed by hardness measurement and X-ray diffraction. Using the positron diffusion trapping model the activation energy of the grain boundary migration was determined as 1.08 +/- 0.05 eV, and the recrystallization temperature was estimated to be around 950 degrees C. Additionally, the bulk positron lifetime in this metal determined as 98.38 +/- 0.30 ps.
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页数：5
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