Abstract
Vitreous alloys exhibit changes in the specific heat capacity (Δcp) as well as configuration at the characteristic glass transition temperature (Tg). A wide variety of bulk metallic glasses (BMGs) such as, Zr47.5Cu47.5Al5, Zr55Cu30Ni5Al10, Zr52.5Cu17.9Ni14.6Al10Ti5 and Zr41.2Ti13.8Cu12.5Ni10Be22.5 were rolled at room temperature, and the variation of Tg, Δcp at Tg, configurational entropy (ΔSconf.), pressure coefficient of Tg (dTg/dP) and bending strength were measured to understand the configurational change in BMGs upon cold rolling. The normalized bending moment during yielding of a cold rolled Zr55Cu30Ni5Al10 has increased by 43.4% than the as-cast specimen. The ΔSconf. of the Zr55Cu30Ni5Al10 plate increased upon rolling from 0.537±0.041 J/mol∙K for as-cast to 0.654±0.032 J/mol∙K for 70% cold rolled sample. A relaxed glassy state with low Tg exhibits high dTg/dP value and vice versa.
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