IMPURITY-INDUCED VACANCY CLUSTERING IN COLD-WORKED NICKEL

被引：89

作者：

DLUBEK, G ^{[1
]}

BRUMMER, O ^{[1
]}

MEYENDORF, N ^{[1
]}

HAUTOJARVI, P ^{[1
]}

VEHANEN, A ^{[1
]}

YLIKAUPPILA, J ^{[1
]}

机构：

[1] HELSINKI UNIV TECHNOL,DEPT TECH PHYS,SF-02150 ESPOO 15,FINLAND

来源：

JOURNAL OF PHYSICS F-METAL PHYSICS | 1979年 / 9卷 / 10期

关键词：

D O I：

10.1088/0305-4608/9/10/007

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Isochronal and time-linear annealing of pure nickel and dilute NiSb-alloys (0.03 and 0.1 at.%Sb) cold rolled to different thickness reductions have been studied by positron lifetime, angular correlation and Doppler-broadening measurements. The results show that free vacancy migration occurs at the stage III around 80 degrees C. A small amount of Sb impurities induces three-dimensional vacancy clustering during the stage III. These microvoids grow continuously with further heating. After an annealing at 335 degrees C they become visible in the transmission electron microscope. The average microvoid size as a function of annealing temperature is estimated. The microvoids anneal out at 450 degrees C during the recrystallisation.

引用

页码：1961 / &

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