TY - JOUR
T1 - The world's biggest glassy alloy ever made
AU - Nishiyama, Nobuyuki
AU - Takenaka, Kana
AU - Miura, Haruko
AU - Saidoh, Noriko
AU - Zeng, Yuqiao
AU - Inoue, Akihisa
N1 - Funding Information:
This study was financially supported by “ New Energy and Industrial Technology Development Organization ” (NEDO) and “ Ministry of Economy, Trade and Industry (METI)” under “ Technological Development of Innovative Components Based on Enhanced Functionality Metallic Glass ” project. FDM calculations performed by Mr. M. Watanabe and Mr. H. Tosu at Dainichi Kikai Kogyo Co., Ltd. are also acknowledged.
PY - 2012/11
Y1 - 2012/11
N2 - With the aim of obtain the world's biggest glassy alloy, a molten Pd 42.5Cu 30Ni 7.5P 20 alloy with a total weight of 3432 g was water-quenched in a quartz tube. As a result, a cylindrical glassy alloy sample with a diameter of 80 mm and a length of 85 mm was successfully obtained. X-ray diffraction measurements for crashed fragments reveal that the obtained whole sample is vitrified into complete glassy state except for little irregular region of the bubble surface. In addition, differential scanning calorimetry measurements also reveal that the sample has quite homogeneous structure and stable thermal characteristics. In order to estimate a cooling rate for each location of the sample, finite-difference- method calculations using physical properties previously reported were carried out. The calculations exhibited good agreements with previous results and the present experimental results, verifying the validity of the calculations.
AB - With the aim of obtain the world's biggest glassy alloy, a molten Pd 42.5Cu 30Ni 7.5P 20 alloy with a total weight of 3432 g was water-quenched in a quartz tube. As a result, a cylindrical glassy alloy sample with a diameter of 80 mm and a length of 85 mm was successfully obtained. X-ray diffraction measurements for crashed fragments reveal that the obtained whole sample is vitrified into complete glassy state except for little irregular region of the bubble surface. In addition, differential scanning calorimetry measurements also reveal that the sample has quite homogeneous structure and stable thermal characteristics. In order to estimate a cooling rate for each location of the sample, finite-difference- method calculations using physical properties previously reported were carried out. The calculations exhibited good agreements with previous results and the present experimental results, verifying the validity of the calculations.
KW - B. Glasses, metallic
KW - B. Thermal stability
KW - C. Rapid solidification processing
KW - E. Phase stability, prediction
KW - F. Calorimetry
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U2 - 10.1016/j.intermet.2012.03.020
DO - 10.1016/j.intermet.2012.03.020
M3 - Article
AN - SCOPUS:84865654857
SN - 0966-9795
VL - 30
SP - 19
EP - 24
JO - Intermetallics
JF - Intermetallics
ER -