복합 밀링 공정으로 제조된 산화물 분산 강화 강의 미세조직 및 고온 기계적 특성

이정욱; 김영균; 김정한; 김휘준; 이기안

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자료유형: 학술저널

저자정보: 이정욱 (인하대학교) 김영균 (인하대학교 신소재공학과) 김정한 (한밭대학교) 김휘준 (한국생산기술연구원) 이기안 (인하대학교)

저널정보: 한국분말야금학회 한국분말야금학회지 한국분말재료학회지 제28권 제5호

발행연도: 2021.10

수록면: 389 - 395 (7page)

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Oxide dispersion-strengthened (ODS) steel has excellent high-temperature properties, corrosion resistance, and oxidation resistance, and is expected to be applicable in various fields. Recently, various studies on mechanical alloying (MA) have been conducted for the dispersion of oxide particles in ODS steel with a high number density. In this study, ODS steel is manufactured by introducing a complex milling process in which planetary ball milling, cryogenic ball milling, and drum ball milling are sequentially performed, and the microstructure and high-temperature mechanical properties of the ODS steel are investigated. The microstructure observation revealed that the structure is stretched in the extrusion direction, even after the heat treatment. In addition, transmission electron microscopy (TEM) analysis confirmed the presence of oxide particles in the range of 5 to 10 nm. As a result of the room-temperature and high-temperature compression tests, the yield strengths were measured as 1430, 1388, 418, and 163 MPa at 25, 500, 700, and 900oC, respectively. Based on these results, the correlation between the microstructure and mechanical properties of ODS steel manufactured using the composite milling process is also discussed.

#Milling process #Oxide dispersion strengthened steel #Microstructure #High temperature #Compression

참고문헌 (20)

참고문헌 신청

H. Oka / 2021 / J. Nucl. Mater 547:152833

A. Hirata / 2011 / Nat. Mater 23:1

김영균 / 2018 / 산화물 분산 강화 강 분말이 첨가된 자동차 부품용 철계 복합소재의 미세조직 및 마모 특성 / 한국분말야금학회지 25(1):36~42

Y. Hwang / 1999 / Korean J. Crystallography 10:145

M. J. Alinger / 2009 / Acta Mater 57:392

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