Oxidation induced phase instability of Cu54Zr22Ti18Ni6 bulk metallic glass

被引：7

作者：

Cho, Hoon

Choi, Hanshin ^{[1
]}

Jo, Hyungho

Lim, Sungchui

Kim, Byoungmoon

Lee, Changhee

机构：

[1] Korea Inst Ind Technol, Nanomat Team, Adv Mat R&D Ctr, Inchon, South Korea

[2] Res Inst Ind Sci & Technol, Pohang, South Korea

[3] Hanyang Univ, Neomat & Hybrid Proc Lab, Seoul 133791, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 449卷

关键词：

Cu54Zr22Ti18M6 bulk metallic glass; isothermal oxidation; phase evolution;

D O I：

10.1016/j.msea.2006.03.136

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Effects of isothermal oxidation on the chemical instability which triggers crystallization of Cu54Zr22Ti18Ni6 (numbers indicate at.%) bulk metallic glass were investigated. Comparing the isothermal heat flux of Cu54Zr22Ti18Ni6 bulk metallic glass within the supercooled liquid region in differential scanning calorimetry, it could be observed that the isothermal oxidation did decrease the incubation time for crystallization. What is further, this amorphous phase instability was enhanced with the decrease of particle size. Through this study, chemical instability due to preferential oxidation of alloying element and resulting deviation of chemical composition in intact metallic region needs to be considered in phase evolution of bulk metallic glass during material processing. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：118 / 121

页数：4

共 6 条

[1] Critical factors affecting the amorphous phase formation of NiTiZrSiSn bulk amorphous feedstock in vacuum plasma spray [J].