TY - JOUR
T1 - Structural study of Fe-Based glassy alloys with a large supercooled liquid region
AU - Imafuku, M.
AU - Sato, S.
AU - Nakamura, T.
AU - Koshiba, H.
AU - Matsubara, E.
AU - Inoue, A.
N1 - Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 2001
Y1 - 2001
N2 - The thermal stability and local atomic structures of glassy Fe70M10B20 (M = Hf, Zr, Nb, W and Cr) alloys were analyzed by DSC, ordinary X-ray diffraction and AXS measurements. The random network of the trigonal prism-like structure of (Fe,M)3B with edge-sharing, was identified in all the Fe70M10B20 (M = Hf, Zr, Nb, W and Cr) alloys in spite of the wide variety of thermal stability upon heating. Several unique primary precipitated crystalline phases, such as Fe23B6 type and Fe-M phases, were observed in the alloys exhibiting a high thermal stability. These crystallization reactions require relatively long range rearrangements of the constituents and hence the thermal stability of the glassy phase increases, leading to the appearance of a large supercooled liquid region upon heating. These phenomena may be originated from the difference in the chemical affinity and the atomic size mismatch between M and Fe or B.
AB - The thermal stability and local atomic structures of glassy Fe70M10B20 (M = Hf, Zr, Nb, W and Cr) alloys were analyzed by DSC, ordinary X-ray diffraction and AXS measurements. The random network of the trigonal prism-like structure of (Fe,M)3B with edge-sharing, was identified in all the Fe70M10B20 (M = Hf, Zr, Nb, W and Cr) alloys in spite of the wide variety of thermal stability upon heating. Several unique primary precipitated crystalline phases, such as Fe23B6 type and Fe-M phases, were observed in the alloys exhibiting a high thermal stability. These crystallization reactions require relatively long range rearrangements of the constituents and hence the thermal stability of the glassy phase increases, leading to the appearance of a large supercooled liquid region upon heating. These phenomena may be originated from the difference in the chemical affinity and the atomic size mismatch between M and Fe or B.
UR - http://www.scopus.com/inward/record.url?scp=0035742214&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035742214&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0035742214
SN - 0272-9172
VL - 644
SP - L1.6.1-L1.6.10
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
T2 - Supercooled Liquid, Bulk Glassy and Nanocrystalline states of Alloys
Y2 - 27 November 2000 through 30 November 2000
ER -