Micro-scale mechanical behavior of ultrafine-grained materials processed by high-pressure torsion

Megumi Kawasaki; Jae Kyung Han; Dong Hyung Lee; Jae Il Jang; Terence G. Langdon

doi:10.4028/www.scientific.net/MSF.941.1495

Micro-scale mechanical behavior of ultrafine-grained materials processed by high-pressure torsion

Megumi Kawasaki
, Jae Kyung Han
, Dong Hyung Lee
, Jae Il Jang
, Terence G. Langdon

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

Bulk ultrafine-grained (UFG) materials usually show superior mechanical and physical properties. The development of micro-mechanical behavior is observed after significant changes in microstructure through high-pressure torsion (HPT) processing. This report summarizes recent results on the evolution of small-scale mechanical response examined by the nanoindentation technique on two UFG materials including a high-entropy alloy and an Al-Mg metal matrix nanocomposite processed by HPT. Special emphasis is placed on demonstrating the interrelationship of essential microstructural changes with increasing torsional strain and applying a post-deformation annealing treatment and the evolution of the micro-mechanical behavior in these UFG materials by estimating the strain rate sensitivity.

Original language	English
Title of host publication	THERMEC 2018
Editors	R. Shabadi, Mihail Ionescu, M. Jeandin, C. Richard, Tara Chandra
Publisher	Trans Tech Publications Ltd
Pages	1495-1500
Number of pages	6
ISBN (Print)	9783035712087
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.941.1495
State	Published - 2018
Externally published	Yes
Event	10th International Conference on Processing and Manufacturing of Advanced Materials, 2018 - Paris, France Duration: Jul 9 2018 → Jul 13 2018

Publication series

Name	Materials Science Forum
Volume	941 MSF
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Conference

Conference	10th International Conference on Processing and Manufacturing of Advanced Materials, 2018
Country/Territory	France
City	Paris
Period	07/9/18 → 07/13/18

Funding

This work was supported by the NRF Korea funded by MSIP under Grant No. NRF-2015R1A5A1037627 and NRF-2017R1A2B4012255 (JIJ); and the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS (TGL).

Keywords

High-Pressure Torsion
Nanoindentation
Severe Plastic Deformation
Strain Rate Sensitivity
Ultrafine Grains

Access to Document

10.4028/www.scientific.net/MSF.941.1495

Cite this

Kawasaki, M., Han, J. K., Lee, D. H., Jang, J. I., & Langdon, T. G. (2018). Micro-scale mechanical behavior of ultrafine-grained materials processed by high-pressure torsion. In R. Shabadi, M. Ionescu, M. Jeandin, C. Richard, & T. Chandra (Eds.), THERMEC 2018 (pp. 1495-1500). (Materials Science Forum; Vol. 941 MSF). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.941.1495

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title = "Micro-scale mechanical behavior of ultrafine-grained materials processed by high-pressure torsion",

abstract = "Bulk ultrafine-grained (UFG) materials usually show superior mechanical and physical properties. The development of micro-mechanical behavior is observed after significant changes in microstructure through high-pressure torsion (HPT) processing. This report summarizes recent results on the evolution of small-scale mechanical response examined by the nanoindentation technique on two UFG materials including a high-entropy alloy and an Al-Mg metal matrix nanocomposite processed by HPT. Special emphasis is placed on demonstrating the interrelationship of essential microstructural changes with increasing torsional strain and applying a post-deformation annealing treatment and the evolution of the micro-mechanical behavior in these UFG materials by estimating the strain rate sensitivity.",

keywords = "High-Pressure Torsion, Nanoindentation, Severe Plastic Deformation, Strain Rate Sensitivity, Ultrafine Grains",

author = "Megumi Kawasaki and Han, \{Jae Kyung\} and Lee, \{Dong Hyung\} and Jang, \{Jae Il\} and Langdon, \{Terence G.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Trans Tech Publications, Switzerland.; 10th International Conference on Processing and Manufacturing of Advanced Materials, 2018 ; Conference date: 09-07-2018 Through 13-07-2018",

year = "2018",

doi = "10.4028/www.scientific.net/MSF.941.1495",

language = "English",

isbn = "9783035712087",

series = "Materials Science Forum",

publisher = "Trans Tech Publications Ltd",

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}

Kawasaki, M, Han, JK, Lee, DH, Jang, JI & Langdon, TG 2018, Micro-scale mechanical behavior of ultrafine-grained materials processed by high-pressure torsion. in R Shabadi, M Ionescu, M Jeandin, C Richard & T Chandra (eds), THERMEC 2018. Materials Science Forum, vol. 941 MSF, Trans Tech Publications Ltd, pp. 1495-1500, 10th International Conference on Processing and Manufacturing of Advanced Materials, 2018, Paris, France, 07/9/18. https://doi.org/10.4028/www.scientific.net/MSF.941.1495

Micro-scale mechanical behavior of ultrafine-grained materials processed by high-pressure torsion. / Kawasaki, Megumi; Han, Jae Kyung; Lee, Dong Hyung et al.
THERMEC 2018. ed. / R. Shabadi; Mihail Ionescu; M. Jeandin; C. Richard; Tara Chandra. Trans Tech Publications Ltd, 2018. p. 1495-1500 (Materials Science Forum; Vol. 941 MSF).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - Bulk ultrafine-grained (UFG) materials usually show superior mechanical and physical properties. The development of micro-mechanical behavior is observed after significant changes in microstructure through high-pressure torsion (HPT) processing. This report summarizes recent results on the evolution of small-scale mechanical response examined by the nanoindentation technique on two UFG materials including a high-entropy alloy and an Al-Mg metal matrix nanocomposite processed by HPT. Special emphasis is placed on demonstrating the interrelationship of essential microstructural changes with increasing torsional strain and applying a post-deformation annealing treatment and the evolution of the micro-mechanical behavior in these UFG materials by estimating the strain rate sensitivity.

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KW - Strain Rate Sensitivity

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Micro-scale mechanical behavior of ultrafine-grained materials processed by high-pressure torsion

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