Stress-induced martensitic transformations in CuZrAl bulk metallic glass forming alloys

Autor:	S.K. Guan, Yufeng Sun, Chan Hung Shek, Fushan Li
Rok vydání:	2008
Předmět:	Materials science Amorphous metal Mechanical Engineering Metallurgy Zirconium alloy Nanoindentation Condensed Matter Physics Hysteresis Transition metal Mechanics of Materials Phase (matter) Martensite General Materials Science Deformation (engineering)
Zdroj:	Materials Science and Engineering: A. 479:31-36
ISSN:	0921-5093
Popis:	In this paper, 5 mm diameter Cu46.5Zr48.5Al5 bulk metallic glass forming alloys were prepared by water cooled Cu-mould cast. Microstructural observation shows that the alloys consist of amorphous phase and crystalline phase containing CuZr martensite. The deformation behaviors of the crystalline region and amorphous phase in the alloys were studied by means of nanoindentation tests under progressive multicycle mode. The results reveal that the unloading and the subsequent reloading h–p curves for the amorphous phase can retrace each other. While for the crystalline region, an obvious hysteresis loop was found between the unloading and reloading h–p curves in the typically elastic regime, indicating the occurrence of ‘stress-induced phase transformation’. This unique deformation behavior of the material was also confirmed by using uniaxial compression tests.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::73662a3d7aca577b70639df7a98467fd https://doi.org/10.1016/j.msea.2007.06.018 Zobrazit plný text záznamu Full Text from ScienceDirect