This study was carried out to investigate the effect of deformation induced martensite on the damping capacity of Fe-26Mn-4Co-2Al damping alloy. α‘ and ε-martensite were formed by cold working, and; deformation induced martensite was formed with according to the specific direction and the surface relief. With an increasing degree of cold rolling, the volume fraction of α‘-martensite increased rapidly, while the volume fraction of ε-martensite decreased after rising to a maximum value at a specific level of cold rolling. Damping capacity was increased, and then decreased with an increasing of the degree of cold rolling. Damping capacity was influenced greatly by the volume fraction of ε-martensite formed by cold working, but the effect of the volume fraction of α‘-martensite have a actually on effect on the damping capacity.

1. 서 론
 2. 실험 방법
  2.1 시료
  2.2 미세조직의 관찰
  2.3 X선 회절시험
  2.4 감쇠능 측정
 3. 실험 결과 및 고찰
  3.1 미세조직 관찰
  3.2 미세조직과 감쇠능에 미치는 냉간가공의 영향
  3.3 감쇠능에 미치는 가공유기 마르텐사이트의 영향
 4. 결 론
 References

• 정규성(부경대학교 금속공학과) | Kyu-Seong Jeong
• 강창룡(부경대학교 금속공학과) | Chang-Yong Kang Corresponding author