Deformation-Induced Martensitic Transformation in Cu-Zr-Zn Bulk Metallic Glass Composites

Metals

Dianyu Wu⁵  Kaikai Song⁶  Chongde Cao⁵  Ran Li²  Gang Wang¹  Yuan Wu⁷  Feng Wan⁵  Fuli Ding⁵  Yue Shi⁵  Xiaojun Bai⁵  Ivan Kaban⁴  Jürgen Eckert⁸  K.C. Chan³ 

[1] Laboratory for Microstructures, Shanghai University, 200444 Shanghai, China; E-Mail:;Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, 100191 Beijing, China; E-Mail:Department of Physics, School of Science, Northwestern Polytechnical University, Youyi Xilu 127, 710072 Xi’an, China;;IFW Dresden, Institute for Complex Materials, Helmholtzstraße 20, 01069 Dresden, Germany; E-Mail:;Department of Physics, School of Science, Northwestern Polytechnical University, Youyi Xilu 127, 710072 Xi’an, China; E-Mails:;School of Mechanical, Electrical & Information Engineering, Shandong University (Weihai), Wenhua Xilu 180, 264209 Weihai, China;State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100191 Beijing, China; E-Mail:;Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, A-8700 Leoben, Austria; E-Mail:

关键词: metallic glasses;    composites;    rapid solidification;    martensitic transformation;   

DOI  :  10.3390/met5042134

来源: mdpi

【 摘 要 】

The microstructures and mechanical properties of (Cu_0.5Zr_0.5)_100−xZn_x (x = 0, 1.5, 2.5, 4.5, 7, 10, and 14 at. %) bulk metallic glass (BMG) composites were studied. CuZr martensitic crystals together with minor B2 CuZr and amorphous phases dominate the microstructures of the as-quenched samples with low Zn additions (x = 0, 1.5, and 2.5 at. %), while B2 CuZr and amorphous phases being accompanied with minor martensitic crystals form at a higher Zn content (x = 4.5, 7, 10, and 14 at. %). The fabricated Cu-Zr-Zn BMG composites exhibit macroscopically appreciable compressive plastic strain and obvious work-hardening due to the formation of multiple shear bands and the deformation-induced martensitic transformation (MT) within B2 crystals. The present BMG composites could be a good candidate as high-performance structural materials.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.