TY - JOUR
T1 - Mechanical response of Zr-based metallic glass
AU - Sergueeva, A. V.
AU - Mara, N.
AU - Mukherjee, A. K.
PY - 2003/3/1
Y1 - 2003/3/1
N2 - The new family of Zr-based multicomponent metallic glasses shows a beneficial combination of yield strength value as high as 2 GPa and microplasticity of up to 1% at room temperature and excellent glass-forming ability in a wide supercooled liquid region. Partial devitrification of glassy alloys upon heating or hot working above the glass transition temperature can lead to formation of nanocrystalline precipitates in the glassy matrix. In this case, the mechanical properties depend on the amount of crystalline precipitates. The nature of the brittle crystalline intermetallic phases is likely to dominate the mechanical behavior, leading to the observed decrease in ductility for the annealed samples since the deformation is no longer governed by the deformation mechanism of the amorphous phase. A fully crystallized alloy upon heating has revealed increasing ductility with temperature, exhibiting superplastic-like deformation with high elongation.
AB - The new family of Zr-based multicomponent metallic glasses shows a beneficial combination of yield strength value as high as 2 GPa and microplasticity of up to 1% at room temperature and excellent glass-forming ability in a wide supercooled liquid region. Partial devitrification of glassy alloys upon heating or hot working above the glass transition temperature can lead to formation of nanocrystalline precipitates in the glassy matrix. In this case, the mechanical properties depend on the amount of crystalline precipitates. The nature of the brittle crystalline intermetallic phases is likely to dominate the mechanical behavior, leading to the observed decrease in ductility for the annealed samples since the deformation is no longer governed by the deformation mechanism of the amorphous phase. A fully crystallized alloy upon heating has revealed increasing ductility with temperature, exhibiting superplastic-like deformation with high elongation.
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U2 - 10.1016/S0022-3093(02)02007-0
DO - 10.1016/S0022-3093(02)02007-0
M3 - Conference article
AN - SCOPUS:0037367232
SN - 0022-3093
VL - 317
SP - 169
EP - 175
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
IS - 1-2
T2 - Advances in Metallic Glasses
Y2 - 17 February 2002 through 21 February 2002
ER -