Nitriding of maraging steel N18K9M5T

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 1971 English Publisher:Springer Science and Business Media LLCJournal:Metal Science and Heat Treatment, volume 13, pages 289-292 (issn: 0026-0673, eissn: 1573-8973,

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Authors: �. S. Tsyrlin;

doi: 10.1007/bf00661338

Nitriding of maraging steel N18K9M5T

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Abstract

1. Nitriding of maraging steel N18K9M5T results in the formation of a case that is not brittle and is firmly bonded to the base metal, with a depth of 0.2–0.25 mm and a high surface hardness (up to HV 900). 2. Nitriding greatly increases the wear resistance of the steel and also the fatigue limit. 3. After aging and nitriding, steel N18K9M5T has a high corrosion resistance in artificial sea water. 4. To obtain a diffusion layer of sufficient depth with a high surface hardness, nitriding should be conducted in ammonia at 450° for 48 h and at 500° for 24h. In this case nitriding is combined with the aging process.

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