오스테나이트계 스테인리스강의 화학성분에 따른 변형유기 마르텐사이트 변태와 인장응력-변위 곡선의 거동

다국어 초록 (Multilingual Abstract)

Strain-induced martensite transformation and its effect on the behavior of tensile stress-strain curve have been studied at room temperature. Two types of 304 austenitic stainless steels were chosen for the study: high Ni/Mn/Mo contents of high stacking fault energy (A steel) and low small Ni/Mn/Mo contents of low stacking fault energy (B steel). The microstructural evolution of transformation products was monitored using Electron Backscatter Diffraction (EBSD). The as-drawn B steel had ε-martensite in austenite matrix due to the low value of stacking fault energy. The B steel prestained with 3% transformed the ε-martensite to α’-martensite, therefore exhibiting the high strain hardening rate in tensile stress-strain curve. However, the A steel showed only austenite phase for the as-drawn and prestrained specimens with 3%. The A steels prestrained with 7% and 9% indicated the sligh amount of ε-martensite with no α’-martensite, therefore exhibiting the low strain hardening rate in tensile stress-strain curve.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험방법
• 3. 실험결과 및 고찰
• 4. 결론
• References

참고문헌 (Reference)

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