Phase transformations in a Cu-Zr-Al metallic glass

被引：29

作者：

Cheng, Qi ^{[1
,2
]}

Han, Xiaoliang ^{[3
]}

Kaban, Ivan ^{[3
]}

Soldatov, Ivan ^{[4
]}

Wang, Wei Hua ^{[1
,2
,5
]}

Sun, Yong Hao ^{[1
,2
,5
]}

Orava, Jiri ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] IFW Dresden, Inst Complex Mat, Helmholtzstr 20, D-01069 Dresden, Germany

[4] IFW Dresden, Inst Metall Mat, Helmholtzstr 20, D-01069 Dresden, Germany

[5] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

来源：

SCRIPTA MATERIALIA | 2020年 / 183卷

基金：

中国国家自然科学基金;

关键词：

Fast scanning calorimetry; Crystallization; Phase transformations; Metallic glass; FORMING ABILITY; CRYSTALLIZATION BEHAVIOR; THERMAL-STABILITY; NUCLEATION; KINETICS; NANOCALORIMETRY; TEMPERATURE; MECHANISMS; DESIGN; ALLOYS;

D O I：

10.1016/j.scriptamat.2020.03.028

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A combination of conventional calorimetry, ultra-fast scanning calorimetry and resistive heating gives access to heating rates exceeding 6 orders of magnitude allowing to probe crystallization kinetics and mechanisms in a Cu-Zr-Al metallic glass. Continuous-heating-transformation and double-peak timetemperature-transformation diagrams are constructed and related to the formation of glass-crystal composites with enhanced ductility. The metastable B2-CuZr phase becomes dominantly formed at a heating rate of similar to 10(2) K s(-1) and higher. A critical heating rate to bypass crystallization is similar to 10,000 K s(-1). For isothermal annealing at >850 K, only one crystallization event is detected; for lower temperatures, a complex two-step transformation occurs. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：61 / 65

页数：5

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