ラジカル窒化によるマルエージング鋼の疲労強度の向上について

Translated title of the contribution: Improvement of Fatigue Strength of Maraging Steel by Nitriding

皮籠石 紀雄, 深田 一徳, 森野 数博, 陳 強, 近藤 英二

Research output: Contribution to journalArticle

Abstract

Rotating bending fatigue tests were carried out to investigate the influence of radical nitriding on the surface integrity and the fatigue strength for a maraging steel. Fatigue strength increased by nitriding. Although the initiation site of fracture was the surface in the aged steel, it was the specimen surface at high stress levels and the interior at low stress levels in the nitrided steel. The main reason for the surface fracture was the surface embrittlement and the one for the interior fracture was the surfce hardening due to nitriding. As the results, S-N curves of the nitrided maraging steel showed a double staged curve.
Original languageJapanese
Pages (from-to)314-320
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume67
Issue number654
DOIs
Publication statusPublished - Feb 25 2001

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