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논문 기본 정보

자료유형
학술저널
저자정보
Jong Woo Won (Pohang University of Science and Technology) 이태경 (부산대학교) 홍성구 (한국표준과학연구원) Yongmoon Lee (Pohang University of Science and Technology) 이정훈 (한국생산기술연구원) Chong Soo Lee (Pohang University of Science and Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.22 No.6
발행연도
2016.1
수록면
1,041 - 1,048 (8page)

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The importance of deformation twins in static recrystallization kinetics of high-purity alpha titanium was investigatedby carrying out thermal annealing tests of deformed materials in combination with electron-backscatterdiffraction-based microstructural analysis. Prior to thermal annealing, the material was compressed to a truestrain of 0.22 along three directions to introduce different twinning characteristics. Our results showed thatdeformation twins substantially promoted the static recrystallization process by deepening the microstructuralinhomogeneity induced by the formation of twin boundaries and twinning-induced crystallographic latticereorientation. Twin morphology was also observed to be important because it influenced the extent of microstructuralinhomogeneity. Intersecting twin morphology, caused by the activation of multiple twin variants, was moreeffective than parallel twin morphology, caused by the activation of a single twin variant (or a twin variantpair), because it gave rise to more twin boundaries, more twin boundary junctions (intersections, triplejunctions, etc.), and greater in-grain crystallographic orientation spread.

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