A Comparison of Warm and Combined Warm and Low-Temperature Processing Routes for the Equal-Channel Angular Pressing of Pure Titanium

A. Gunay-Bulutsuz , Witold Chromiński , Ying Huang , Petr Kral , Mehmet Emin Yurci , Małgorzata Lewandowska , T.G. Langdon

Abstract

Two different processing routes are used to investigate the microstructure and strength of commercial purity (CP) titanium of grade 4 processed by equal-channel angular pressing (ECAP). In the combined temperature (CT) route, the specimens are pressed at 723 K in the first pass and at 373 K in the second pass, but in the warm temperature (WT) route, the specimens are pressed through two passes at 723 K. Both routes lead to an inhomogeneous microstructure with an average grain size of ≈1.5 and ≈1.7 μm after the CT and WT routes, respectively. Both routes give improved strengthening and higher hardness, but the CT route with a lower temperature step gives the highest ultimate tensile strength of ≈790 MPa. The inclusion of a lower temperature processing step may be important for optimizing the strength of CP Ti for the use in medical implants.

Author A. Gunay-Bulutsuz (FMSE / DMD)
A. Gunay-Bulutsuz,,
- Division of Materials Design
, Witold Chromiński (FMSE / DMD)
Witold Chromiński,,
- Division of Materials Design
, Ying Huang
Ying Huang,,
-
, Petr Kral - [Academy of Sciences of the Czech Republic]
Petr Kral,,
-
-
, Mehmet Emin Yurci - [Yildiz Technical University]
Mehmet Emin Yurci,,
-
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, Małgorzata Lewandowska (FMSE / DMD)
Małgorzata Lewandowska,,
- Division of Materials Design
, T.G. Langdon
T.G. Langdon,,
-
Journal seriesAdvanced Engineering Materials, ISSN 1438-1656, e-ISSN 1527-2648
Issue year2020
Vol22
No2
Pages1-8
Publication size in sheets0.5
Article number1900698
ASJC Classification2500 General Materials Science; 3104 Condensed Matter Physics
DOIDOI:10.1002/adem.201900698
URL https://doi.org/10.1002/adem.201900698
Languageen angielski
File
adem.201900698.pdf 2.96 MB
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 24-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.078; WoS Impact Factor: 2018 = 2.906 (2) - 2018=2.897 (5)
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