The world's biggest glassy alloy ever made

被引：151

作者：

Nishiyama, Nobuyuki ^{[1
]}

Takenaka, Kana ^{[1
]}

Miura, Haruko ^{[1
]}

Saidoh, Noriko ^{[1
]}

Zeng, Yuqiao ^{[2
]}

Inoue, Akihisa ^{[2
]}

机构：

[1] Mat Proc Technol Ctr, RIMCOF Tohoku Univ Lab, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

INTERMETALLICS | 2012年 / 30卷

关键词：

Thermal stability; Glasses; metallic; Rapid solidification processing; Phase stability; prediction; Calorimetry; CRITICAL COOLING RATE; METALLIC-GLASS; PD40CU30NI10P20; ALLOY; BULK GLASS; TRANSITION; BEHAVIOR; NUCLEATION; STABILITY; MM;

D O I：

10.1016/j.intermet.2012.03.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

With the aim of obtain the world's biggest glassy alloy, a molten Pd42.5Cu30Ni7.5P20 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. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：19 / 24

页数：6

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