TY - JOUR
T1 - Mechanical properties of porous bulk glassy alloy prepared in high-pressure hydrogen atmosphere
AU - Wada, Takeshi
AU - Inoue, Akihisa
AU - Greer, A. Lindsay
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/3/25
Y1 - 2007/3/25
N2 - Bulk glassy Pd42.5Cu30Ni7.5P20 (numbers indicate at.%) alloy rods containing fine spherical pores with the volume fraction less than 6% were prepared by a water quenching technique in high-pressure hydrogen atmosphere. The distribution of the pore is quite uniform in both transverse and longitudinal cross-section of the porous alloy rods. In compression deformation mode, the porous alloys have slightly low-yield strength compared with pore-free one and exhibit large plastic strain exceeding 18%. These results indicate that the introduction of small volume fraction of pores is effective to enhance the plasticity without much degradation of its mechanical strength. The beneficial effect of the pores comes from their action as powerful stress concentrators, forcing shear-band proliferation below the failure stress.
AB - Bulk glassy Pd42.5Cu30Ni7.5P20 (numbers indicate at.%) alloy rods containing fine spherical pores with the volume fraction less than 6% were prepared by a water quenching technique in high-pressure hydrogen atmosphere. The distribution of the pore is quite uniform in both transverse and longitudinal cross-section of the porous alloy rods. In compression deformation mode, the porous alloys have slightly low-yield strength compared with pore-free one and exhibit large plastic strain exceeding 18%. These results indicate that the introduction of small volume fraction of pores is effective to enhance the plasticity without much degradation of its mechanical strength. The beneficial effect of the pores comes from their action as powerful stress concentrators, forcing shear-band proliferation below the failure stress.
KW - Mechanical properties
KW - Palladium-based alloy
KW - Plasticity
KW - Porous bulk metallic glass
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U2 - 10.1016/j.msea.2006.02.337
DO - 10.1016/j.msea.2006.02.337
M3 - Article
AN - SCOPUS:33847205656
VL - 448-451
SP - 958
EP - 961
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
ER -