Structural evolution of a CuZr-based bulk metallic glass composite during cryogenic treatment observed by in-situ high-energy X-ray diffraction

JOURNAL OF ALLOYS AND COMPOUNDS

卷:871

Article

Xue, Peng^1,2,3  Huang, Yongjiang^1,3  Pauly, Simon⁴  Guo, Fangmin⁵  Ren, Yang⁶  Jiang, Songshan³  Guo, Feiya³  Guo, Shu⁷  Fan, Hongbo³  Ning, Zhiliang³  Sun, Jianfei³ 

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

[2] Jihua Lab, Foshan 528000, Peoples R China

[3] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

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

[5] China Univ Petr, Coll New Energy & Mat, Beijing 102249, Peoples R China

[6] Adv Photon Source, Argonne Natl Lab Bldg 401, Lemont, IL 60439 USA

[7] Harbin Inst Technol, Ctr Anal & Measurement, Harbin 150001, Peoples R China

关键词: Bulk metallic glass composite;    Cryogenic treatment;    In-situ high-energy X-ray diffraction;    Molecular dynamics simulation;    Martensitic transformation;   

DOI  :  10.1016/j.jallcom.2021.159570

来源: Elsevier

【 摘 要 】

In-situ high-energy X-ray diffraction and molecular dynamic simulation were employed to study the structural evolution of a B2 phase reinforced CuZr-based bulk metallic glass composite in different structural states during cryogenic treatment between 300 K and 100 K. No phase transformation occurs in the as-cast sample during cryogenic treatment, while the pre-strained sample undergoes martensitic transformation and reverse martensitic transformation. The ambient temperature, uniaxial stress, and hydrostatic pressure on the B2 CuZr phase are closely related to the phase transformation behavior of the CuZr phase in the pre-strained composite sample. Molecular dynamic simulation confirms the experimental results. The findings in this work will help to clarify the mechanism of the martensitic transformation in the B2 CuZr phase, and finely tune the structure and mechanical behaviors of CuZr-based bulk metallic glass composites. (C) 2021 Elsevier B.V. All rights reserved.

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