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Mo-ODS alloys have excellent mechanical properties, including an improved recrystallization temperature, greater strength due to dispersed oxides, and the ability to suppress grain growth at high temperatures. In ODS alloys, the dispersed Y₂O₃ and added Ti form Y-Ti-O complex oxides, producing finer particles than those in the initial Y₂O₃. The complex oxides increase high-temperature stability and improve the mechanical properties of the alloy. In particular, the use of TiH₂ powder, which is more brittle than conventional Ti, can enable the distribution of finer oxides than is possible with conventional Ti powder during milling. Moreover, dehydrogenation leads to a more refined powder size in the reduction process. This study investigated the refinement of Yi₂Ti₂O₇ in a nano Mo-ODS alloy using TiH₂. The alloy compositions were determined to be Mo-0.5Ti-0.5Yi₂O₃ and Mo-1.0Ti-0.5Yi₂Oi₂. The nano Mo-ODS alloys were fabricated using Ti and TiH₂ to explore the effects of adding different forms of Ti. The sintered specimens were analyzed through X-ray diffraction for phase analysis, and the microstructure of the alloys was analyzed using scanning electron microscopy and transmission electron microscopy. Vickers hardness tests were conducted to determine the effect of the form of Ti added on the mechanical properties, and it was found that using TiHi₂ effectively improved the mechanical properties.

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권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
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Recovery of barium, nickel, and titanium powders from waste MLCC Haein Shin, Kun-Jae Lee p. 374-381

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소결 조건에 따른 FeCrMnNiCo 고엔트로피 합금의 미세조직 변화 = Effect of sintering conditions on the microstructure of an FeCrMnNiCo high-entropy alloy 박성현, 이상화, 이준호, 이석재, 정재길 p. 406-413

SCM440 주조재와 F-05-140 소결재의 이종재료 마찰용접 및 공정 조건에 따른 접합 특성 연구 = Friction welding of casted SCM440 and sintered F-05-140 dissimilar steels and their joint properties under various welding conditions 이지성, 이한성, 송은효, 안병민 p. 414-421

레이저 파우더 베드 퓨전 3차원 적층된 Cu-10Sn 합금의 미세조직 및 기계적 특성 = Microstructure and mechanical properties of laser powder bed fusion 3D-printed Cu-10Sn alloy 김종규, 원정훈, 이욱진 p. 422-430

TiO2 첨가량에 따른 Nd2O3, Yb2O3 첨가 YSZ 복합 소재의 고온 열화거동 분석 = Effect of TiO2 content on high-temperature degradation behavior of Nd2O3 and Yb2O3–doped YSZ composite materials 이계원, 최선웅, 박태준, 김종일, 이인환, 오윤석 p. 431-436

다양한 섬유강화 구조를 갖는 NITE-SiC/SiC 복합재료의 층간 강도 특성 연구 = Inter-laminar strength of NITE-SiC/SiC composites with various fiber reinforcing architecture 김종일 p. 437-444