IMR OpenIR
Designing aluminum-rich bulk metallic glasses via electronic-structure-guided microalloying
Wu, N. C.; Zuo, L.; Wang, J. Q.; Ma, E.; Wang, JQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2016-04-15
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume108Pages:143-151
AbstractAluminum-based bulk metallic glasses (BMGs) are notoriously difficult to make, owing to the relatively low glass forming ability (GFA) of Al-rich alloys. As a result, the search for Al-rich BMGs has resorted to adjusting the alloy composition through minor additions of alloying elements. But such a "microalloying" strategy faces yet another challenge well known to the BMG community: GFA often shows a strong composition dependence but the underlying reason remains poorly understood. Here we tackle these two problems using an electronic-structure-informed approach, in lieu of relying solely on trial and error. Co and La are introduced into the Al-Ni-Y base alloy to partially substitute for Ni and Y, respectively, and their effects on the Fermi level and Brillouin zone size are monitored using spectroscopy experiments. The Co and La contents are tailored to approach a favorable condition that minimizes the electronic density of states at the Fermi level, a recipe to elevate the stability of the amorphous phase. This approach guided us to land an optimal composition in the quinary alloy system, Al86Ni6.75-Co2.25Y3.25La1.75, where fully glassy rods reached a record size of 1.5 mm in diameter via copper mold casting. The electronic structure perspective thus appears to be a useful knob to turn to push the envelope of GFA accessible to Al-rich BMGs. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
description.department[wu, n. c. ; wang, j. q.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [wu, n. c. ; zuo, l.] northeastern univ, coll mat & met, 3-11 wenhua rd, shenyang 110819, peoples r china ; [ma, e.] johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa
KeywordAl Alloys Bulk Metallic Glasses Electronic Structure Glass-forming Ability Microalloying
Subject AreaMaterials Science ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51131006, 51471166]; JHU [US-NSF-DMR-1505621]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75908
Collection中国科学院金属研究所
Corresponding AuthorWang, JQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Wu, N. C.,Zuo, L.,Wang, J. Q.,et al. Designing aluminum-rich bulk metallic glasses via electronic-structure-guided microalloying[J]. ACTA MATERIALIA,2016,108:143-151.
APA Wu, N. C.,Zuo, L.,Wang, J. Q.,Ma, E.,&Wang, JQ .(2016).Designing aluminum-rich bulk metallic glasses via electronic-structure-guided microalloying.ACTA MATERIALIA,108,143-151.
MLA Wu, N. C.,et al."Designing aluminum-rich bulk metallic glasses via electronic-structure-guided microalloying".ACTA MATERIALIA 108(2016):143-151.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, N. C.]'s Articles
[Zuo, L.]'s Articles
[Wang, J. Q.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, N. C.]'s Articles
[Zuo, L.]'s Articles
[Wang, J. Q.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, N. C.]'s Articles
[Zuo, L.]'s Articles
[Wang, J. Q.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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