Details
| Original language | English |
|---|---|
| Pages (from-to) | 1328-1336 |
| Number of pages | 9 |
| Journal | International Journal of Materials Research |
| Volume | 97 |
| Issue number | 10 |
| Publication status | Published - Oct 2006 |
| Externally published | Yes |
Abstract
The present paper reports on the cyclic stress-strain response of body-centered cubic ultrafine-grained (UFG) interstitial-free (IF) steel severely plastically deformed at room temperature utilizing equal channel angular extrusion (ECAE). Low-cycle fatigue tests were conducted with various strain amplitudes and strain rates on samples obtained through different ECAE routes and number of ECAE passes in order to determine the optimum processing route(s) for improved fatigue response of this material. UFG IF steel is superior to its coarse grained counterpart under both monotonic and cyclic loading in terms of properties, such as stress ranges tolerated, strength levels attained, and the corresponding fatigue behavior. All UFG steels subjected to more than 4 ECAE passes exhibit stable cyclic stressstrain response. Moreover, it was shown that dynamic grain coarsening, which usually leads to cyclic softening in UFG materials, is not prevalent in the ECAE processed UFG IF steel. For representing the fatigue life of UFG IF steel, the parameter after Smith, Watson and Topper, which is an indication of energy dissipation per cycle, proved adequate while comparing materials obtained through different ECAE routes.
Keywords
- Body-centered cubic, Equal channel angular extrusion, Fatigue life, Interstitial free steel, Ultrafine grained microstructure
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Materials Chemistry
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In: International Journal of Materials Research, Vol. 97, No. 10, 10.2006, p. 1328-1336.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - On the fatigue behavior of ultrafine-grained interstitial-free steel
AU - Niendorf, Thomas
AU - Canadinc, Demircan
AU - Maier, Hans Jürgen
AU - Karaman, Ibrahim
AU - Sutter, Steve G.
PY - 2006/10
Y1 - 2006/10
N2 - The present paper reports on the cyclic stress-strain response of body-centered cubic ultrafine-grained (UFG) interstitial-free (IF) steel severely plastically deformed at room temperature utilizing equal channel angular extrusion (ECAE). Low-cycle fatigue tests were conducted with various strain amplitudes and strain rates on samples obtained through different ECAE routes and number of ECAE passes in order to determine the optimum processing route(s) for improved fatigue response of this material. UFG IF steel is superior to its coarse grained counterpart under both monotonic and cyclic loading in terms of properties, such as stress ranges tolerated, strength levels attained, and the corresponding fatigue behavior. All UFG steels subjected to more than 4 ECAE passes exhibit stable cyclic stressstrain response. Moreover, it was shown that dynamic grain coarsening, which usually leads to cyclic softening in UFG materials, is not prevalent in the ECAE processed UFG IF steel. For representing the fatigue life of UFG IF steel, the parameter after Smith, Watson and Topper, which is an indication of energy dissipation per cycle, proved adequate while comparing materials obtained through different ECAE routes.
AB - The present paper reports on the cyclic stress-strain response of body-centered cubic ultrafine-grained (UFG) interstitial-free (IF) steel severely plastically deformed at room temperature utilizing equal channel angular extrusion (ECAE). Low-cycle fatigue tests were conducted with various strain amplitudes and strain rates on samples obtained through different ECAE routes and number of ECAE passes in order to determine the optimum processing route(s) for improved fatigue response of this material. UFG IF steel is superior to its coarse grained counterpart under both monotonic and cyclic loading in terms of properties, such as stress ranges tolerated, strength levels attained, and the corresponding fatigue behavior. All UFG steels subjected to more than 4 ECAE passes exhibit stable cyclic stressstrain response. Moreover, it was shown that dynamic grain coarsening, which usually leads to cyclic softening in UFG materials, is not prevalent in the ECAE processed UFG IF steel. For representing the fatigue life of UFG IF steel, the parameter after Smith, Watson and Topper, which is an indication of energy dissipation per cycle, proved adequate while comparing materials obtained through different ECAE routes.
KW - Body-centered cubic
KW - Equal channel angular extrusion
KW - Fatigue life
KW - Interstitial free steel
KW - Ultrafine grained microstructure
UR - http://www.scopus.com/inward/record.url?scp=33750493876&partnerID=8YFLogxK
U2 - 10.3139/146.101377
DO - 10.3139/146.101377
M3 - Article
AN - SCOPUS:33750493876
VL - 97
SP - 1328
EP - 1336
JO - International Journal of Materials Research
JF - International Journal of Materials Research
SN - 1862-5282
IS - 10
ER -