Abstract
Fatigue behavior of standardized 4340 steel samples uniformly coated with WIP-C1 (Ni/CrC) by cold spray was investigated. In particular, when a crack appeared at the interface between the base material and the coating, the cause of it as well as its shape and size were investigated. Fatigue loading was applied by alternating symmetrical cycles. Scanning electron microscopy was used to study the onset of failure and the subsequent propagation of cracks. The interface between the two materials performed well—in all samples, the initial crack propagation occurred on the surface of the base material, continuing into the coating material and in the interior of the base material. The fatigue durability curve of stress vs. number of cycles (S-N) presented a conventional form for a metallic alloy and the coating material had an influence only on the damage on the surface of the base material.
Funder
Army Research Laboratories
Subject
General Materials Science
Reference49 articles.
1. Surface modification of AISI 4340 steel by multipass TIG arcing process;J. Mater. Process. Technol.,2017
2. Ultrahigh-strength low-alloy steels with enhanced fracture toughness;Prog. Mater. Sci.,1997
3. Effect of austempering conditions on the microstructure and mechanical properties of AISI 4340 and AISI 4140 steels;J. Mater. Res. Technol.,2019
4. Nawrocki, J.G., Dupont, J.N., Robino, C.V., Puskar, J.D., and Marder, A.R. (2003). The mechanism of stress-relief cracking in a ferritic alloy steel. Weld. J., 25–35.
5. Service-induced changes in the microstructure and mechanical properties of a Cr-Mo-Ni-V turbine steel;ISIJ Int.,1997
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