Mechanical behavior of a metal matrix nanocomposite synthesized by high-pressure torsion via diffusion bonding

Han Joo Lee, Jae Kyung Han, Byung Min Ahn, Megumi Kawasaki, Terence G. Langdon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

High-pressure torsion (HPT) is one of the major severe plastic deformation (SPD) procedures where disk metals generally achieve exceptional grain refinement at ambient temperatures. HPT has been applied for the consolidation of metallic powders and bonding of machining chips whereas very limited reports examined the application of HPT for the fabrication of nanocomposites. An investigation was initiated to evaluate the potential for the formation of a metal matrix nanocomposite (MMNC) by processing two commercial metal disks of Al-1050 and ZK60 magnesium alloy through HPT at room temperature. Evolutions in microstructure and mechanical properties including hardness and plasticity were examined in the processed disks with increasing numbers of HPT turns up to 5. This study demonstrates the promising possibility for using HPT to fabricate a wide range of hybrid MMNCs from simple metals.

Original languageEnglish
Title of host publicationTHERMEC 2016
EditorsChristof Sommitsch, Mihail Ionescu, Brajendra Mishra, Brajendra Mishra, Ernst Kozeschnik, T. Chandra
PublisherTrans Tech Publications Ltd
Pages1068-1073
Number of pages6
ISBN (Print)9783035711295
DOIs
StatePublished - 2017
Externally publishedYes
Event9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 - Graz, Austria
Duration: May 29 2016Jun 3 2016

Publication series

NameMaterials Science Forum
Volume879
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016
Country/TerritoryAustria
CityGraz
Period05/29/1606/3/16

Funding

This work was supported by the NRF Korea funded by MoE under Grant No. NRF-2014R1A1A2057697 (MK); the NRF Korea funded by MSIP under Grant No. NRF-2015R1A2A2A01002387 (BA); and the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS (TGL).

Keywords

  • Hardness
  • High-pressure torsion
  • Metal-matrix composite
  • Nanoindentation
  • Strain rate sensitivity

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