TY - JOUR
T1 - Nanocrystalline Zr-based bulk glassy alloys with high flexural strength
AU - Yokoyama, Yoshihiko
AU - Yamano, Katsumi
AU - Fukaura, Kenzo
AU - Sunada, Hisakichi
AU - Inoue, Akihisa
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
N2 - High flexural strength exceeding 4000 MPa combined with sufficient deflection was found to be obtained in a cast bulk glassy Zr55Al10Ni5Cu29Nb1 alloy consisting of crystalline regions with a size of 2 to 6 nm embedded in a glassy matrix. The phase with the fine mixed structure was named as a nanocrystalline glassy phase and produced by the combination of the following two effects; (1) metallurgical effect by the addition of Nb which enables us to form a supercooled liquid including homogeneous crystalline clusters resulting from the positive heat of mixing for Nb against Zr, and (2) the squeezing casting effect which enables us to form a bulk amorphous alloy keeping the specialized structural feature in the supercooled liquid. The nanocrystalline glassy structure was characterized to lie in a transient stage from the glassy to nanocrystalline phases and the structural feature was identified by high-resolution transmission electron microscopsy.
AB - High flexural strength exceeding 4000 MPa combined with sufficient deflection was found to be obtained in a cast bulk glassy Zr55Al10Ni5Cu29Nb1 alloy consisting of crystalline regions with a size of 2 to 6 nm embedded in a glassy matrix. The phase with the fine mixed structure was named as a nanocrystalline glassy phase and produced by the combination of the following two effects; (1) metallurgical effect by the addition of Nb which enables us to form a supercooled liquid including homogeneous crystalline clusters resulting from the positive heat of mixing for Nb against Zr, and (2) the squeezing casting effect which enables us to form a bulk amorphous alloy keeping the specialized structural feature in the supercooled liquid. The nanocrystalline glassy structure was characterized to lie in a transient stage from the glassy to nanocrystalline phases and the structural feature was identified by high-resolution transmission electron microscopsy.
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U2 - 10.2320/matertrans1989.40.1015
DO - 10.2320/matertrans1989.40.1015
M3 - Article
AN - SCOPUS:0033321117
VL - 40
SP - 1015
EP - 1018
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 9
ER -