Mechanical behavior and microstructural evolution of commercially pure titanium in enhanced multi-pass equal channel angular pressing and cold extrusion
- Authors
- Kang, Dong-Hwan; Kim, Tae-Won
- Issue Date
- Jun-2010
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Equal channel angular pressing (ECAP); Severe plastic deformation (SPD); Titanium; Finite element analysis; Light materials
- Citation
- MATERIALS & DESIGN, v.31, pp.S54 - S60
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS & DESIGN
- Volume
- 31
- Start Page
- S54
- End Page
- S60
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/174863
- DOI
- 10.1016/j.matdes.2010.01.004
- ISSN
- 0264-1275
- Abstract
- Microstructures together with mechanical properties of commercially pure titanium (CP-Ti) developed by a newly designed multi-pass equal channel angular pressing (ECAP) process and cold extrusion were investigated. A T-type ECAP apparatus was developed to improve the efficiency of common ECAP and the performance of finished products. A much stronger CP-Ti billet was produced by using the proposed processes. As shown in the results, a severe plastic deformation occurred in the material by means of continuous shear deformation during the radical bending process through a repeated route. The resulting mechanical properties such as yield and tensile strength were improved according to the grain refinement that is connected with the Hall-Petch theory. Additively, cold extrusion was conducted to produce a cylindrical type bulk material by using the ECAP. Microstructural refinement with improvement of mechanical properties was attributed to this additional plastic forming process. Finished products developed by the T-type multi-pass ECAP and cold extrusion processes therefore have been shown to be remarkably hardened, such as the ultimate tensile strength of CP-Ti 292.5 initially to 791.9 MPa with significant refinement of the microstructure.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 기계공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/174863)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.