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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 702 - 710 (9page)
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초록· 키워드
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Fe–Al–Mn–C alloy systems are low-density austenite-based steels that show excellent mechanical properties. After aging suchsteels at adequate temperatures for adequate time, nano-scale precipitates such as κ-carbide form, which have profound Effectson the mechanical properties. Therefore, it is important to predict the amount and size of the generated κ-carbide precipitatesin order to control the mechanical properties of low-density steels. In this study, the microstructure and mechanical propertiesof aged low-density austenitic steel were characterized. Thermo-kinetic simulations of the aging process were used topredict the size and phase fraction of κ-carbide after Different aging periods, and these results were validated by comparisonwith experimental data derived from dark-fi eld transmission electron microscopy images. Based on these results, modelsfor precipitation strengthening based on Different mechanisms were assessed. The measured increase in the strength of agedspecimens was compared with that calculated from the models to determine the exact precipitation strengthening mechanism.
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