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Fatigue Resistance of Laminated and Non-laminated TRIP-maraging Steels: Crack Roughness vs Tensile Strength

Author(s)
Zhang, Zhao; Koyama, Motomichi; Wang, Meimei; Tasan, Cemal; Noguchi, Hiroshi
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Abstract
Pre-cold-rolling before annealing in transformation-induced plasticity (TRIP) maraging steels changes the microstructural morphology from lamellar to granular, increasing the tensile strength. However, fatigue tests of plain specimens at ambient temperature and the stress ratio − 1 show that increased strength does not improve the fatigue strength compared to laminated TRIP-maraging steel, irrespective of stress amplitude. The disappearance of fatigue crack roughness suppresses the improvement in fatigue resistance with increasing strength.
Date issued
2019-01
URI
https://hdl.handle.net/1721.1/129559
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Journal
Metallurgical and Materials Transactions A
Publisher
Springer Science and Business Media LLC
Citation
Zhang, Zhao et al. "Fatigue Resistance of Laminated and Non-laminated TRIP-maraging Steels: Crack Roughness vs Tensile Strength." Metallurgical and Materials Transactions A 50, 3 (January 2019): 1142–1145 © 2019 The Minerals, Metals & Materials Society and ASM International
Version: Author's final manuscript
ISSN
1073-5623
1543-1940

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