オーステナイト系ステンレス鋼鋳鋼の低温における機械的性資と破面様相との関係について

概要

論文の詳細を見る
Though the ultimate strength and the proof stress of austenitic stainless steel increased by lowering the temperature, the tensile ductility and the toughness were reduced. However, the steels containing a small amount of ferrite still had a relatively high toughness at a temperature as low as −196°C. Scanning microscope examination of the broken tensile and impact test pieces showed that a quasi-cleavage type of fracture appeared at lower tempratures. It is considered that the quasicleavage type fracture is related to the area of ferrite and the stability of the austenite.
Japan Foundry Engineering Societyの論文