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

        Dynamic Compression Behavior of a Mg–Gd-Based Alloy at Elevated Temperature

        Changping Tang,Kai Wu,Wenhui Liu,Di Feng,Guoliang Zuo,Wuying Liang,Yue Yang,Xu Chen,Quan Li,Xiao Liu 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.6

        The dynamic compression behavior and microstructure evolution at 400 °C of an extruded Mg–8Gd–4Y–Nd–Zr alloy withdifferent tempers were investigated. The peak-aged samples exhibit the highest compressive strength, followed by as-extrudedsamples and over-aged samples. The highest dynamic compressive strength of 582 MPa was achieved by peak-aged samplecompressed at 1224 s−1. The high strength was attributed to the formation of abundant thermally stable βʹ precipitates andsome dynamic precipitates. The dynamic compressive strength of peak-aged sample and over-aged sample is not sensitiveto strain rates, while that of the as-extruded sample is sensitive to strain rates. The dynamic compressive strength of the asextrudedalloy can reach 535 MPa when compressed at 2024 s−1. The high strength was mainly ascribed to the formationof numerous dynamic precipitates and the work hardening effect caused by dislocations. The cracks are composed of crackthat is 45° to loading direction on the cylindrical surface and crack on the compressed surface. Microstructure observationindicates that the crack was easily propagated along the interface between the adiabatic shear band and matrix, grainboundaries. The equilibrium phase β in over-aged sample was unable to hinder the crack propagation.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼