Abstract
This report summarizes a recent study demonstrating simple and rapid synthesis of a new Al-Mg alloy system and ultimately synthesizing a metal matrix nanocomposite, which was achieved by processing stacked disks of the two dissimilar metals by conventional high-pressure torsion (HPT) processing. The synthesized Al-Mg alloy system exhibits exceptionally high hardness through rapid diffusion bonding and simultaneous nucleation of intermetallic phases with increased numbers of HPT turns through 20, and improved plasticity was demonstrated by increasing strain rate sensitivity in the alloy system after post-deformation annealing. An additional experiment demonstrated that the alternate stacking of high numbers of dissimilar metal disks may produce a faster metal mixture during HPT. Metal combinations of Al-Cu, Al-Fe, and Al-Ti were processed by the same HPT procedure from separate pure metals to examine the feasibility of the processing technique. The microstructural analysis confirmed the capability of HPT for the formation of heterostructures across the disk diameters in these processed alloy systems. The HPT processing demonstrates a considerable potential for the joining and bonding of dissimilar metals at room temperature and the expeditious fabrication of a wide range of new metal systems.
Original language | English |
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Pages (from-to) | 2700-2710 |
Number of pages | 11 |
Journal | Journal of Materials Research |
Volume | 33 |
Issue number | 18 |
DOIs | |
State | Published - Sep 28 2018 |
Externally published | Yes |
Funding
Kawasaki Megumi * a) Han Jae-Kyung * Lee Dong-Hyun † Jang Jae-il † Langdon Terence G. ‡ * School of Mechanical , Industrial & Manufacturing Engineering , Oregon State University , Corvallis , Oregon 97331-6001 , USA † Division of Materials Science and Engineering , Hanyang University , Seoul 04763 , Republic of Korea ‡ Materials Research Group , Faculty of Engineering and the Environment , University of Southampton , Southampton SO17 1BJ , U.K. Address all correspondence to this author. e-mail: a) [email protected] This paper has been selected as an Invited Feature Paper. 19 07 2018 28 09 2018 33 18 2700 2710 05 04 2018 05 06 2018 Copyright © Materials Research Society 2018 2018 Materials Research Society
Funders | Funder number |
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Division of Materials Science and Engineering , Hanyang University | |
U.K. | |
Oregon State University | |
University of Southampton | |
Chinese Materials Research Society |
Keywords
- Al-Mg
- diffusion bonding
- high-pressure torsion
- intermetallic compound
- severe plastic deformation