Effects of wear-resistant coatings on the fatigue strength of 4340 steel
- Naval Aviation Depot North Island, San Diego, CA (United States)
For applications using 4340 steel where hardened surfaces are required in a marine environment, surface coatings are necessary. Coatings that resist corrosion and provide wear resistance generally degrade the fatigue performance of the substrate metal. Shot peening before plating was ineffective in preventing a loss of fatigue life of plated steel bars compared to bare steel test bars which were not shot peened. The maximum residual compressive strength produced by shot peening was measured and was less than the maximum applied tensile stress in fatigue. As-plated electroless nickel has poor sliding wear resistance compared to either electroplated nickel or chromium in sliding wear at a contact stress of 37 Mpa. The tensile strength decreased in proportion to the volume fraction of coating applied to the steel substrate.
- OSTI ID:
- 335425
- Report Number(s):
- CONF-9705309-; ISBN 0-8031-2485-6; TRN: IM9918%%210
- Resource Relation:
- Conference: Symposium on effects of product quality and design on structural integrity, St. Louis, MO (United States), 5 May 1997; Other Information: PBD: 1998; Related Information: Is Part Of Effects of product quality and design criteria on structural integrity; Rice, R.C.; Tritsch, D.E. [eds.]; PB: 202 p.; ASTM special technical publication, 1337
- Country of Publication:
- United States
- Language:
- English
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