K-0712 浸炭処理とWPC処理を組み合わせたハイブリッド表面処理鋼の疲労特性(S07-3 疲労信頼性の向上(熱処理,加工))(S07 表面改質とその機能特性評価)

概要

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Rotational bending fatigue tests were carried out on low carbon Cr-Mo steel modified by a combination of Wide Peening Cleaning (WPC) and carburizing, with special attention focused on the effect of surface residual stress on fatigue properties. By combining the carburizing and the WPC process, it is possible to generate a high compressive residual stress near the surface, maintaining a deep layer of compressive residual stress formed by the carburizing. The notched specimens modified by the combined process show a significantly higher fatigue strength compared to those modified by only carburizing. This is because the extremely high compressive residual stress remained at the surface of the specimens modified by the combined process after stress cycling.
社団法人日本機械学会の論文
2001-08-22