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Fe-17%Mn 합금의 진동감쇠능과 기계적 성질에 미치는 합금원소(C, Si) 및 열간압연의 영향
김정철 ( J. C. Kim ),한동운 ( D. W. Han ),백진현 ( J. H. Back ),김태훈 ( T. H. Kim ),백승한 ( S. H. Baik ),이영국 ( Y. K. Lee ) 한국열처리공학회 2005 熱處理工學會誌 Vol.18 No.2
N/A In this study, the effects of C and Si on damping capacity and mechanical properties of as-cast and as-rolled Fe-17%Mn alloys were investigated as a basic study for the purpose of the commercialization of the alloy. The M_(S) temperature of γ→ε martensitic transformation in Fe-17%Mn alloy was decreased with increasing C and Si contents, resulting in the less volume fraction of a martensite. The damping capacity was also decreased with increasing alloying content because of less s amount and the reduction in mobility of the damping sources such as the stacking fault boundaries and γ/ε interfaces due to the pinning effect by alloying elements. The mechanical properties of as-rolled alloys were superior to those of as-cast alloys probably because of finer γgrains, larger amount of ε martensite, and chemical homogeneity.