진동제어에 의한 정밀기기의 고성능화를 위한 고강도 및 고감쇠능 합금개발

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 22; no. 6; pp. 46 - 51
• Main Authors: 강창룡(CHANG YONG KANG), 김익수(IK SU KIM)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2008
• Subjects: 해양공학; Vibration 진동; ε martensite ε 마르텐사이트; Stacking fault energy 적층결함에너지; Damping capacity 감쇠능; Internal friction energy 내부마찰에너지; varepsilon
• ISSN: 1225-0767; 2287-6715

The effect of the addition of Co and N and subzero treatment on tensile strength and damping capacity was investigated in Fe-Cr-Mn alloy. Austenite was transformed into martensite by cold rollins increasing the degree of cold rollins led to an increase in the volume fraction of martensite. The damping capacity linearly increased with increasing volume fraction of ${\varepsilon}$ martensite in cold rolled specimens and subzero treated specimens after cold rolling. The volume fraction of ${\varepsilon}$ martensite, tensile strength and damping capacity was also increased by the addition of Co, while this treatment decreased the elongation. However, the volume fraction of ${\varepsilon}$ martensite, elongation and damping capacity were reduced by the addition of N, although the tensile strength increased. Tensile strength and damping capacity werealso increased by subzero treatment, while elongation decreased.