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

Zhang, Zhao; Koyama, Motomichi; Wang, Meimei; Tasan, Cemal Cem; Noguchi, Hiroshi

doi:10.1007/s11661-018-5081-6

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

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Wang, Meimei
Adaptive Structural Materials (Experiment), Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Citation

Zhang, Z., Koyama, M., Wang, M., Tasan, C. C., & Noguchi, H. (2019). Fatigue Resistance of Laminated and Non-laminated TRIP-maraging Steels: Crack Roughness vs Tensile Strength. Metallurgical and Materials Transactions A, 50(3), 1142-1145. doi:10.1007/s11661-018-5081-6.

Cite as: https://hdl.handle.net/21.11116/0000-0008-2C1A-B

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. © 2019, The Minerals, Metals Materials Society and ASM International.