Abstract
This paper reports the effect of prior deformation on the refinement of microstructure in commercial purity (CP) titanium subject to equal channel angular pressing (ECAP). CP Ti Grade 2 billets were subject to multiple-strike isothermal forging before ECAP. Microstructures and mechanical properties were observed after the initial forging and then after 1, 2, 3, and 4 passes of ECAP. Grain size reduction from 50 μm to 1 μm by forging makes it possible to create a uniform ultrafine-grained structure with an average grain size of 0.6 μm after 2 ECAP passes. This is comparable to the grain size obtained after 8 ECAP passes without prior forging. Moreover, this kind of treatment resulted in a yield strength of 750 MPa in contrast to 680 MPa obtained after 8 ECAP passes.
Original language | English |
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Title of host publication | Ultrafine Grained Materials IV |
Editors | Yuntian T. Zhu, Terence G. Langdon, Zenji Horita, Michael J. Zehetbauer, S. Lee Semiatin, Terry C. Lowe |
Publisher | Minerals, Metals & Materials Society |
Pages | 277-282 |
ISBN (Print) | 0873396286, 9780873396288 |
Publication status | Published - Mar 2006 |
Externally published | Yes |
Event | 2006 TMS Annual Meeting: Linking Science and Technology for Global Solutions - Henry B. Gonzalez Convention Center, San Antonio, TX, United States Duration: 12 Mar 2006 → 16 Mar 2006 Conference number: 135th https://www.tms.org/Meetings/Annual-06/PDFs/AM06-Ftechprog.pdf https://www.tms.org/Meetings/Annual-06/PDFs/AM06-FTuesday.pdf |
Publication series
Name | TMS Annual Meeting |
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Volume | 2006 |
Conference
Conference | 2006 TMS Annual Meeting |
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Country/Territory | United States |
City | San Antonio, TX |
Period | 12/03/06 → 16/03/06 |
Internet address |
Research Keywords
- Prior deformation
- Severe plastic deformation
- Titanium