오토저널 (Journal of the korean Society of Automotive Engineers)
- 제9권2호
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- Pages.28-33
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- 1987
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- 1739-4791(pISSN)
회소강의 기계적 성질을 개선하기 위한 이온질화 처리의 응용에 관한 연구
Study on the Application of Ion-nitrided Treatment to Improve the Mechanical Properties of Carbon Steel
초록
This thesis is to improve the mechanical properties of carbon steel by the ion-nitriding, and post-heat treatment. The structures of ion-nitrided SM45C steel were changed to martensite by quenching from 730.deg. C and 800.deg. C. And then a few of the quenched specimens was tempered at 200.deg. C for 120 min. The emphasis in this study is focussed on Comparison of hardness and fatigue strength with the ion-nitrided steel. The results obtained are summerized as follows. 1. To improve the hardness and fatigue strength of ion-nitrided steels, it is effective to under take diffusion treatment for a short time at the austenite temperature(800.deg. C). 2. If ion-nitrided steel is heated for a long time at high temperature, de-nitriding occure. 3. The quenching treatment after nitriding on the carbon steel is necessary to improve the mechanical properties of the steels.
키워드