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나노 구조 물리 연구단
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Synthesis and mechanical characterisation of an ultra-fine grained Ti-Mg composite

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Title
Synthesis and mechanical characterisation of an ultra-fine grained Ti-Mg composite
Author(s)
Alfreider M.; Jiwon Jeong; Esterl R.; Oh S.H.; Kiener D.
Publication Date
2016-08
Journal
MATERIALS, v.9, no.8, pp.688 -
Publisher
MDPI AG
Abstract
The importance of lightweight materials such as titanium and magnesium in various technical applications, for example aerospace, medical implants and lightweight construction is well appreciated. The present study is an attempt to combine and improve the mechanical properties of these two materials by forming an ultra-fine grained composite. The material, with a composition of 75 vol% (88.4 wt%) Ti and 25 vol% (11.4 wt%) Mg, was synthesized by powder compression and subsequently deformed by high-pressure torsion. Using focused ion beam machining, miniaturised compression samples were prepared and tested in-situ in a scanning electron microscope to gain insights into local deformation behaviour and mechanical properties of the nanocomposite. Results show outstanding yield strength of around 1250 MPa, which is roughly 200 to 500 MPa higher than literature reports of similar materials. The failure mode of the samples is accounted for by cracking along the phase boundaries. © 2016 by the authors
URI
http://pr.ibs.re.kr/handle/8788114/2799
DOI
10.3390/ma9080688
ISSN
1996-1944
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
Synthesis and mechanical characterisation of an ultra-fine grained Ti-Mg composite_정지원 오상호 materials-09-00688 (1).pdfDownload

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