TY - JOUR
T1 - Low temperature mechanical properties of bulk metallic glasses
AU - Takeuchi, Shin
AU - Kakegawa, Tomohiro
AU - Hashimoto, Tatsuo
AU - Tsai, An Pang
AU - Inoue, Akihisa
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2000/11
Y1 - 2000/11
N2 - Compression tests have been performed for bulk metallic glasses of La55Al25Ni20 (L-glass) and Zr41Ti15Ni12Cu11Be21 (Z-Glass) at temperatures from 4.2 K up to above the glass transition temperature. Shear fracture stresses are scattered between 0.75 GPa and 1.2 GPa in the in the L-glass, and between 1.3 GPa and 2.2 GPa in the Z-glass with a tendency of decrease towards both higher and lower temperatures from 77 K in L-glass and from 300 K in Z-glass. The normalized shear fracture stresses with respect to the Young's modulus are around 0.02 in both glass The micro-plastic strain measured with the strain gauge for the L-glass is about 0.2% at the shear fracture stress at room temperature, decreases with decreasing temperature and is of the order of 0.01% below 77 K. The mechanism that determines the shear fracture stress is discussed.
AB - Compression tests have been performed for bulk metallic glasses of La55Al25Ni20 (L-glass) and Zr41Ti15Ni12Cu11Be21 (Z-Glass) at temperatures from 4.2 K up to above the glass transition temperature. Shear fracture stresses are scattered between 0.75 GPa and 1.2 GPa in the in the L-glass, and between 1.3 GPa and 2.2 GPa in the Z-glass with a tendency of decrease towards both higher and lower temperatures from 77 K in L-glass and from 300 K in Z-glass. The normalized shear fracture stresses with respect to the Young's modulus are around 0.02 in both glass The micro-plastic strain measured with the strain gauge for the L-glass is about 0.2% at the shear fracture stress at room temperature, decreases with decreasing temperature and is of the order of 0.01% below 77 K. The mechanism that determines the shear fracture stress is discussed.
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U2 - 10.2320/matertrans1989.41.1443
DO - 10.2320/matertrans1989.41.1443
M3 - Article
AN - SCOPUS:0034313930
VL - 41
SP - 1443
EP - 1447
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 11
ER -