Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries

Shangshu Wu; Zongde Kou; Qingquan Lai; Si Lan; Shyam Swaroop Katnagallu; Horst Hahn; Shabnam Taheriniya; Gerhard Wilde; Herbert Gleiter; Tao Feng

doi:10.1038/s41467-022-33257-1

Nature Communications (Sep 2022)

Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries

Shangshu Wu,
Zongde Kou,
Qingquan Lai,
Si Lan,
Shyam Swaroop Katnagallu,
Horst Hahn,
Shabnam Taheriniya,
Gerhard Wilde,
Herbert Gleiter,
Tao Feng

Affiliations

Shangshu Wu: Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology
Zongde Kou: Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology
Qingquan Lai: Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology
Si Lan: Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology
Shyam Swaroop Katnagallu: Institute of Nanotechnology, Karlsruhe Institute of Technology
Horst Hahn: Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology
Shabnam Taheriniya: Institute of Materials Physics, University of Münster
Gerhard Wilde: Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology
Herbert Gleiter: Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology
Tao Feng: Herbert Gleiter Institute of Nanoscience, School of Material Science and Engineering, Nanjing University of Science and Technology

DOI: https://doi.org/10.1038/s41467-022-33257-1
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 8

Abstract

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Strengthening of metals by grain refinement is limited by the inverse Hall-Petch effect. Here, the authors show nanograined metals can be strengthened by exhausting lattice dislocations via triggering of phase transformation at grain boundaries, instead of further grain refinement.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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