Effect of Cu on Amorphization of a TiNi Alloy during HPT and Shape Memory Effect after Post‐Deformation Annealing
Authors:
- Hamed Shahmir,
- Mahmoud Nili Ahmadabadi,
- Mahdi Mohammadi,
- Yi Huang,
- Mariusz Andrzejczuk,
- Małgorzata Lewandowska,
- Terence G. Langdon
Abstract
A ternary TiNiCu shape memory alloy is subjected to high-pressure torsion (HPT) followed by post-deformation annealing (PDA) to study the effect of Cu (5 at%) on amorphization after HPT processing and to investigate the microstructural evolution and shape memory effect (SME) after PDA. The results show that even after 20 revolutions the ternary alloy contains nanocrystalline areas and the microstructure is not fully amorphous. An easier martensite-to-austenite transformation and minor remaining austenite in the ternary alloy are responsible for suppressing amorphization. Post-deformation annealing at 673 K provides nanocrystalline microstructures containing an R-phase with a minor martensitic B19' phase in the ternary alloy. The SME of this alloy after PDA is not as satisfactory as that of the binary alloy processed through similar conditions because of the existence of a high volume fraction of the R-phase. However, the total recovered strain of the ternary alloy after PDA for 30 min has a maximum value of 6.5%. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- Record ID
- WUT10fe5b47257940469fefacd6fa6326e3
- Author
- Journal series
- Advanced Engineering Materials, ISSN 1438-1656, e-ISSN 1527-2648
- Issue year
- 2020
- Vol
- 22
- No
- 1
- Pages
- 1-8
- Publication size in sheets
- 0.50
- Keywords in English
- amorphization; nanostructured materials; severe plastic deformation; shape memory effects; TiNiCu alloys
- ASJC Classification
- ;
- DOI
- DOI:10.1002/adem.201900387 Opening in a new tab
- URL
- https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070871881&doi=10.1002%2fadem.201900387&partnerID=40&md5=3faeda629cb9d43c11bed472c420085a Opening in a new tab
- Language
- (en) English
- File
-
- File: 1
- Shahmir_et_al-2019-Advanced_Engineering_Materials.pdf
-
- Score (nominal)
- 100
- Score source
- journalList
- Score
- = 100.0, 03-05-2022, ArticleFromJournal
- Publication indicators
- = 4; = 3; : 2018 = 1.078; : 2020 (2 years) = 3.862 - 2020 (5 years) =3.746
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- Uniform Resource Identifier
- https://repo.pw.edu.pl/info/article/WUT10fe5b47257940469fefacd6fa6326e3/
- URN
urn:pw-repo:WUT10fe5b47257940469fefacd6fa6326e3
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.