지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
A new method was introduced to distinguish the ferrite, bainite and martensite in transformation induced plasticity (TRIP) steel by using electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). EBSD is a very powerful microstructure analysis technique at the length scales ranging from tens of nanometers to millimeters.
However, iron BCC phases such as ferrite, bainite and martensite cannot be easily distinguished by EBSD due to their similar surface morphology and crystallographic structure.
Among the various EBSD-based methodology, image quality (IQ) values, which present the perfection of a crystal lattice, was used to distinguish the iron BCC phases. IQ values are very useful tools to discern the iron BCC phases because of their different density of crystal defect and lattice distortion. However, there are still remaining problems that make the separation of bainite and martensite difficult. For instance, these phases have very similar IQ values in many cases, especially in deformed region; therefore, even though the IQ value was used, it has been difficult to distinguish the bainite and martensite. For more precise separation of bainite and martensite, IQ threshold values were determined by a correlative TEM analysis. By determining the threshold values, iron BCC phases were successfully separated.
목차
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참고문헌 (15)
참고문헌 신청
Calcagnotto M / 2008 / Ultrafine grained ferrite/martensite dual phase steel fabricated by large strain warm deformation and subsequent intercritical annealing / ISIJ Int 48
De Cooman B C / 2004 / Structure-properties relationship in TRIP steels containing carbide-free bainite / Curr. Opin. Solid State Mater. Sci 8 : 285 ~ 303
Fischer F D / 2000 / A new view on transformation induced plasticity (TRIP) / Int. J. Plast 16 : 723 ~ 748
Giannuzzia L A / 1999 / A review of focused ion beam milling techniques for TEM specimen preparation / Micron 30 : 197 ~ 204
Herrera C / 2011 / Design of a novel Mn-based 1GPa duplex stainless TRIP steel with 60% ductility by a reduction of austenite stability / Acta Mater 59 : 4653 ~ 4664
De Cooman B C / 2004 / Structure-properties relationship in TRIP steels containing carbide-free bainite / Curr. Opin. Solid State Mater. Sci 8 : 285 ~ 303
Fischer F D / 2000 / A new view on transformation induced plasticity (TRIP) / Int. J. Plast 16 : 723 ~ 748
Giannuzzia L A / 1999 / A review of focused ion beam milling techniques for TEM specimen preparation / Micron 30 : 197 ~ 204
Herrera C / 2011 / Design of a novel Mn-based 1GPa duplex stainless TRIP steel with 60% ductility by a reduction of austenite stability / Acta Mater 59 : 4653 ~ 4664
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