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Twinning-related enhancement in strength and ductility of Cu-37Zn alloy by the cryogenic ultrasonic impact treatment supplemented with ECAP

journal contribution
posted on 21.01.2022, 15:56 authored by BN Mordyuk, NI Khripta, Liguo ZhaoLiguo Zhao
The effects of ultrasonic impact treatment (UIT) and UIT with equal channel angular pressing (ECAP), on the microstructure of Cu37Zn alloy are studied at ambient and cryogenic temperatures. With decreasing process temperature, highly twinned areas of submicro/nano-scale thickness/spacing, together with dislocation tangles/cells, are introduced in the alloy. Direct microscopy observation and stored energy release analysis confirm enhanced twinnings in the cryo-UIT and cryo-UIT/ECAP treated alloy that simultaneously provide superior Vickers hardness and formability (twinning-induced plasticity effect).

Funding

Royal Society Project "Cryogenic ultrasonic impact treatment for surface nanotwinning of metal alloys" (Grant IES\R2\181158)

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Materials Letters

Volume

310

Publisher

Elsevier

Version

AM (Accepted Manuscript)

Rights holder

© Elsevier

Publisher statement

This paper was accepted for publication in the journal Materials Letters and the definitive published version is available at https://doi.org/10.1016/j.matlet.2021.131512

Acceptance date

13/12/2021

Publication date

2021-12-16

Copyright date

2022

ISSN

0167-577X

Language

en

Depositor

Prof Liguo Zhao. Deposit date: 13 December 2021

Article number

131512