STD61 공구강의 내충격 및 내열피로 특성에 미치는 가스 퀜칭 압력의 영향

박현준; 최광진; 김종엽; 신승용; 문경일

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자료유형: 학술저널

저자정보: 박현준 (한국생산기술연구원 열처리그룹) 최광진 ([주]썸백) 김종엽 (한국생산기술연구원 열처리그룹) 신승용 (한국생산기술연구원 열처리그룹) 문경일 (Korea Institute of Industry Technology[KITECH])

저널정보: 한국열처리공학회 열처리공학회지 열처리공학회지 제29권 제6호

발행연도: 2016.1

수록면: 277 - 283 (7page)

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The influences of cooling pressure of quenching process on the mechanical properties such as hardness, impact endurance and anti-thermal fatigue behaviour of STD61 steel were investigated. The specimens were heat-treated using a vacuum furnace in which they were austenitized at $1,030^{\circ}C$ for 1hour under the pressure of $10^{-3}$ torr and cooled with quenching gas of various pressure, i.e. 1, 2 and 6 bar. According to the observation on the specimens prepared with quenching from austenizing temperature, the mechanical properties of the samples with higher quenching pressure were better than those of prepared at lower quenching pressure. The samples prepared with high quenching pressure showed the more homogeneous microstructure with finer carbides. The size of carbides such as VC and (Fe, Cr)C in quenched specimens decreased with increasing gas quenching pressure. It is considered that the rapid cooling with pressure may restrict the formation and growth of carbide.

#STD61 #Austenitize #Gas quenching #Anti impact property #Anti thermal property

참고문헌 (11)

참고문헌 신청

박규진 / 2013 / 균질화, 열간단조, 어닐링 조건이 개량된 STD61 열간 금형강의 미세조직과 경도에 미치는 영향 / 열처리공학회지 26(2):72~79

Deepak Kundalkar / 2016 / Materials Science &Engineering A 651:391~398

Andrej Skumavc / 2016 / Surface & Coating Technology 285:304~311

I. Souki / 2011 / Procedia Engineering 10:631~637

B. Hoffmann / 1997 / Materials Science & Engineering A 234-236:707~710

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