Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/27655
Title: MINOR ELEMENTAL ADDITIONS IN HIGH OXYGEN CONTENT ZR-CU-BASED ALLOYS
Authors: LIM HUIJUN, GRACE
Keywords: Zr-Cu, Zr-Cu-Al, minor addition, bulk metallic glasses, glass forming ability, oxygen impurity,
Issue Date: 1-Feb-2011
Source: LIM HUIJUN, GRACE (2011-02-01). MINOR ELEMENTAL ADDITIONS IN HIGH OXYGEN CONTENT ZR-CU-BASED ALLOYS. ScholarBank@NUS Repository.
Abstract: Zr-based BMGs are extremely sensitive to the presence of oxygen which is typically considered as an impurity that deteriorates glass forming ability (GFA). It is thus of great interest to consider oxygen as an alloying element and be able to pinpoint a new alloy composition with similar GFA. The GFA of high O-content binary and ternary Zr-Cu alloy systems using sponge Zr have been studied. A shift in the best glass former composition was found for both alloy systems in comparison with their low oxygen content counterparts using the expensive high purity crystal bar Zr. Maximum critical size for the binary Cu-Zr was retained at 2 mm while a 5 mm composite was obtained for the ternary Zr-Cu-Al alloy. Competing phases for glass formation remained the same. The effect of minor elemental addition of Ni and Y were also studied on the ternary high O-content Zr-Cu alloy system.
URI: http://scholarbank.nus.edu.sg/handle/10635/27655
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
LimHJG.pdf11.42 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

226
checked on Dec 11, 2017

Download(s)

173
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.