TY - JOUR
T1 - Mechanical properties of a Ni60Pd20P17B3 bulk glassy alloy at cryogenic temperatures
AU - Kawashima, Asahi
AU - Zeng, Yuqiao
AU - Fukuhara, Mikio
AU - Kurishita, Hiroaki
AU - Nishiyama, Nobuyuki
AU - Miki, Hiroyuki
AU - Inoue, Akihisa
PY - 2008/12/20
Y1 - 2008/12/20
N2 - Little is known about mechanical properties of bulk glassy alloys (BGAs) at cryogenic temperatures. In this study, we investigated the effects of temperature and strain rate on the mechanical properties of a Ni60Pd20P17B3 BGA. Compression tests were performed at temperatures of 295, 223, 173 and 77 K and at strain rates from 5 × 10-5 to 5 × 10-3 s-1. Measurements of the elastic parameters were also made at temperatures from 91 to 371 K. It is found that both the maximum compressive stress and plastic strain to failure increase with decreasing testing temperature. The Young and shear moduli, and Debye temperature monotonically increase with decreasing temperature, while Poisson's ratio decreases, indicating that the BGA becomes rigid and the effective atomic distance decreases at cryogenic temperatures. The mechanism reflecting the changes in the maximum compressive stress and plastic strain with temperature is discussed.
AB - Little is known about mechanical properties of bulk glassy alloys (BGAs) at cryogenic temperatures. In this study, we investigated the effects of temperature and strain rate on the mechanical properties of a Ni60Pd20P17B3 BGA. Compression tests were performed at temperatures of 295, 223, 173 and 77 K and at strain rates from 5 × 10-5 to 5 × 10-3 s-1. Measurements of the elastic parameters were also made at temperatures from 91 to 371 K. It is found that both the maximum compressive stress and plastic strain to failure increase with decreasing testing temperature. The Young and shear moduli, and Debye temperature monotonically increase with decreasing temperature, while Poisson's ratio decreases, indicating that the BGA becomes rigid and the effective atomic distance decreases at cryogenic temperatures. The mechanism reflecting the changes in the maximum compressive stress and plastic strain with temperature is discussed.
KW - Compressive stress
KW - Cryogenic temperature
KW - Elastic parameter
KW - NiPdPB bulk glassy alloy
KW - Plastic strain
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U2 - 10.1016/j.msea.2008.08.033
DO - 10.1016/j.msea.2008.08.033
M3 - Article
AN - SCOPUS:54349107377
VL - 498
SP - 475
EP - 481
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
IS - 1-2
ER -