Microstructure and mechanical evolution of Ti-based bulk metallic glass induced by deformation and isothermal annealing in supercooled liquid region

Autor:	Y.J. Yang, X.Y. Zhang, H.R. Zhang, J.W. Lv, Shuo Zhang, Mingzhen Ma, Shi Zhongran, C. Wei
Rok vydání:	2022
Předmět:	Yield (engineering) Amorphous metal Materials science Mechanical Engineering Plasticity Condensed Matter Physics Microstructure Nanocrystal Mechanics of Materials Fracture (geology) General Materials Science Composite material Deformation (engineering) Supercooling
Zdroj:	Materials Letters. 307:131038
ISSN:	0167-577X
Popis:	The effects of deformation and isothermal annealing in supercooled liquid region on the microstructure and room-temperature mechanical properties of the Ti33Zr30Cu9Ni5.5Be22.5 bulk metallic glass were systematically investigated. The results indicated that the thermally-deformed specimens exhibited denser structures and higher characteristic temperatures (Tg and Tx) than the annealed specimens at the corresponding temperature; however, this difference gradually decreased as the experimental temperature increased. Further, the thermally-deformed specimens exhibited higher yield and fracture strengths than the annealed specimens, whereas they exhibited similar plasticity. The deformed and annealed specimens precipitated some nanocrystals with a size of approximately 10 nm when the experimental temperature increased to 648 K, causing the rapid deterioration of their plasticity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c5e023ebeada8ff05b8b8c4c9c49b294 https://doi.org/10.1016/j.matlet.2021.131038 Zobrazit plný text záznamu Full Text from ScienceDirect