Amorphous structure rejuvenation under cryogenic treatment of Al-based amorphous-nanocrystalline alloys

被引：13

作者：

Abrosimova, G. ^{[1
]}

Volkov, N. ^{[1
]}

Pershina, E. ^{[1
]}

Tran Van Tuan ^{[2
]}

Aronin, A. ^{[1
,2
,3
]}

机构：

[1] Inst Solid State Phys RAS, Chernogolovka, Russia

[2] Natl Univ Sci & Technol MISiS, Moscow, Russia

[3] Natl Res Univ Higher Sch Econ, Moscow, Russia

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2020年 / 528卷

关键词：

Cryogenic rejuvenation; Amorphous structure; Nanocrystals; Crystallization; Diffraction; Electron microscopy; PHASE-DECOMPOSITION; MAGNETIC-PROPERTIES; METALLIC GLASSES; VOLUME FRACTION; CRYSTALLIZATION; TRANSITION; STRENGTH; INCREASE; RE;

D O I：

10.1016/j.jnoncrysol.2019.119751

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Effect of cryogenic treatment on amorphous phase rejuvenation in Al-based alloys was studied by X-ray diffraction, transmission and high-resolution electron microscopy. It was established that cryogenic cycling may lead to amorphization of nanocrystalline regions and amorphous phase rejuvenation in partially crystalline samples. The composition of nanocrystals in the investigated samples differed from that of amorphous phase, therefore, the process of amorphization under cryogenic cycling was accompinied by mass transfer. A degree of amorphization depends on the duration of cryogenic cycling and increases with an increase in its duration. Amorphization of a partially crystalline structure under cryogenic cycling is observed for nanocrystals formed under both heat treatment and deformation.

引用

页数：8

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