Open AccessPhase Transformation and Work-hardening Behavior of Ti-based Bulk Metallic Glass Composite
Author(s) -
Sung Hwan Hong,
Jeong Tae Kim,
Hae Jin Park,
Young Seok Kim,
Jin Man Park,
JinYoo Suh,
Young Sang Na,
Ka Ram Lim,
Ki Buem Kim
Publication year - 2015
Publication title -
han-guk hyeonmigyeong hakoeji/applied microscopy
Language(s) - English
Resource type - Journals
eISSN - 2287-4445
pISSN - 2234-6198
DOI - 10.9729/am.2015.45.2.37
Subject(s) - materials science , crystal twinning , work hardening , hardening (computing) , composite material , composite number , amorphous metal , diffusionless transformation , alloy , amorphous solid , deformation (meteorology) , metallurgy , phase (matter) , martensite , microstructure , crystallography , chemistry , organic chemistry , layer (electronics)
In present work, work-hardening behavior of TiCu-based bulk metallic glass composite with B2 particles has been studied by systemic structural and mechanical investigations. After yield, pronounced work-hardening of the alloy was clearly exhibited, which was mainly related to the martensitic transformation as well as the deformation twinning in B2 particles during deformation. At the early plastic deformation stage (work-hardening stage), the stress-induced martensitic transformation from B2 phase to B19` phase and deformation-induced twinning of B19` phase was preferentially occurred in the around interface areas between B2 phase and amorphous matrix by stress concentration. The higher hardness value was observed in vicinity of interface within the B2 particles which are probably connected with martensitic transformation and deformation twinning. This reveals that the work-hardening phenomenon of this bulk metallic glass composite is a result of the hardening of B2 particles embedded in amorphous matrix.
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