Details
| Original language | English |
|---|---|
| Title of host publication | THERMEC 2011 |
| Pages | 2205-2210 |
| Number of pages | 6 |
| Publication status | Published - 3 Jan 2012 |
| Externally published | Yes |
| Event | 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada Duration: 1 Aug 2011 → 5 Aug 2011 |
Publication series
| Name | Materials Science Forum |
|---|---|
| Volume | 706-709 |
| ISSN (Print) | 0255-5476 |
Abstract
The present paper reports on the fatigue response of a commercial high manganese steel that features the twinning-induced plasticity (TWIP) effect in the high-cycle fatigue (HCF) regime. Specifically, attention was paid to the influence of the degree of pre-deformation and notches on the damage initiation and propagation in the TWIP steel studied. As monotonic pre-deformation significantly increases the fraction of twins and concomitant the strength of the steel, the fatigue properties and notch sensitivity are altered drastically. A thorough experimental approach including mechanical testing and microstructural characterization was employed to shed light on the microstructure-mechanical properties-relationships in order to deepen the understanding of the critical damage mechanisms. The current study clearly lays out that competing mechanisms effect the fatigue response of the TWIP steel, i.e. pre-deformation leads to strengthening but also induces damage. Since both effects evolve differently upon pre-deformation, fatigue performance can be optimized by appropriate amounts of pre-deformation.
Keywords
- Failure, Fatigue, High manganese steel, Microstructure, Notch effect, Pre-deformation
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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THERMEC 2011. 2012. p. 2205-2210 (Materials Science Forum; Vol. 706-709).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - The role of notches on fatigue life of TWIP steel in the HCF regime
AU - Niendorf, Thomas
AU - Klimala, Peter
AU - Maier, Hans J.
AU - Frehn, Andreas
PY - 2012/1/3
Y1 - 2012/1/3
N2 - The present paper reports on the fatigue response of a commercial high manganese steel that features the twinning-induced plasticity (TWIP) effect in the high-cycle fatigue (HCF) regime. Specifically, attention was paid to the influence of the degree of pre-deformation and notches on the damage initiation and propagation in the TWIP steel studied. As monotonic pre-deformation significantly increases the fraction of twins and concomitant the strength of the steel, the fatigue properties and notch sensitivity are altered drastically. A thorough experimental approach including mechanical testing and microstructural characterization was employed to shed light on the microstructure-mechanical properties-relationships in order to deepen the understanding of the critical damage mechanisms. The current study clearly lays out that competing mechanisms effect the fatigue response of the TWIP steel, i.e. pre-deformation leads to strengthening but also induces damage. Since both effects evolve differently upon pre-deformation, fatigue performance can be optimized by appropriate amounts of pre-deformation.
AB - The present paper reports on the fatigue response of a commercial high manganese steel that features the twinning-induced plasticity (TWIP) effect in the high-cycle fatigue (HCF) regime. Specifically, attention was paid to the influence of the degree of pre-deformation and notches on the damage initiation and propagation in the TWIP steel studied. As monotonic pre-deformation significantly increases the fraction of twins and concomitant the strength of the steel, the fatigue properties and notch sensitivity are altered drastically. A thorough experimental approach including mechanical testing and microstructural characterization was employed to shed light on the microstructure-mechanical properties-relationships in order to deepen the understanding of the critical damage mechanisms. The current study clearly lays out that competing mechanisms effect the fatigue response of the TWIP steel, i.e. pre-deformation leads to strengthening but also induces damage. Since both effects evolve differently upon pre-deformation, fatigue performance can be optimized by appropriate amounts of pre-deformation.
KW - Failure
KW - Fatigue
KW - High manganese steel
KW - Microstructure
KW - Notch effect
KW - Pre-deformation
UR - http://www.scopus.com/inward/record.url?scp=84856188672&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.706-709.2205
DO - 10.4028/www.scientific.net/MSF.706-709.2205
M3 - Conference contribution
AN - SCOPUS:84856188672
SN - 9783037853030
T3 - Materials Science Forum
SP - 2205
EP - 2210
BT - THERMEC 2011
T2 - 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
Y2 - 1 August 2011 through 5 August 2011
ER -