Geometry Constrained Plasticity of Bulk Metallic Glass
2009 年 50 巻 1 号 p. 152-157
詳細
2009 年 50 巻 1 号 p. 152-157
Distinction between the geometry constrained plasticity and the unconstrained plasticity in compression stress-strain behaviors of bulk metallic glasses (BMG) has been attempted. Unusually large plasticity of BMG exceeding 20% is possible due to the geometry constrained effect in compression tests even if sample aspect ratios of 1.5–2 are used. Care must be taken because apparent large plasticity can arise if the unconstrained plastic deformation by the uniform formation of fine shear bands allows the deformed parts to touch the crosshead.
