RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        On the Role of Chromium in Dynamic Transformation of Austenite

        K. Chadha,Davood Shahriari,C. Jr. Aranas,Louis‑Philippe Lapierre‑Boire,Mohammad Jahazi 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.3

        The effect of Chromium (Cr) on the dynamic transformation (DT) of austenite to ferrite at temperatures up to 430 °C aboveAe3was studied in a medium-carbon low-alloy steel. Hot compression tests were performed using Gleeble 3800® thermomechanicalsimulator followed by microstructural examinations using electron microscopy (FESEM-EBSD). Driving forcecalculation using austenite flow stress and ferrite yield stress on an inverse absolute temperature graph indicated that Crincreases the driving force for the transformation of austenite to ferrite; however, when the influence of stress and thermodynamicanalysis are taken into account, it was observed that Cr increases the barrier energy and therefore, emerges as abarrier to the transformation. An analysis, based on lattice and pipe diffusion theories is presented that quantifies the role ofstress on the diffusivity of Cr and is compared with other the main alloying elements such as C, Si and Mn and its impact,positive or negative, on the DT barrier energy. Finally, a comparison is made on the differential effects of temperature andstress on the initiation of DT in medium-carbon low-alloy steels.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼