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

        Enhancement of Tensile Properties of AZ91–Ca–Sb Magnesium Alloy with SiC Nanoparticles Additions

        Sourav Ganguly,Smarajit Sarkar,A. K. Mondal 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.10

        The present work investigates the effect of SiC nanoparticles (SiCnp) additions on the tensile properties of the squeeze-castAZ91 + 2.0Ca + 0.3Sb (wt%) alloy at ambient, 423 K and 473 K temperatures. All the AZ91 + 2.0Ca + 0.3Sb + xSiCnp [x = 0.5wt% (0.29 vol%), 1.0 wt% (0.58 vol%), and 2.0 wt% (1.16 vol%)] nanocomposites illustrate greater yield strength and ultimatetensile strength in contrast to the AZ91 + 2.0Ca + 0.3Sb alloy at all the temperatures employed. The yield strength, ultimatetensile strength and elastic modulus of both the alloy and the nanocomposites decline as the temperature increases, whereasthe work to fracture increases with a rise in temperature. Among the nanocomposites, the one comprising of 2.0SiCnp demonstratesthe best tensile properties. All the nanocomposites display superior strain hardening response than the alloy, andthe maximum strain hardening is perceived in the AZ91 + 2.0Ca + 0.3Sb + 2.0SiCnp nanocomposite. The improved tensileproperties of the nanocomposites are ascribed to the reduced grain size, the increase in dislocation density owing to Coefficientof Thermal Expansion (CTE) mismatch between the alloy and the SiC nanoparticles, the Orowan strengthening aswell as the presence of a relatively higher amount of Al2Caphase in the nanocomposites. The contribution to the improvementof strength of the nanocomposites in decreasing order of their influence are the strengthening due to CTE mismatch,the Hall–Petch strengthening, and Orowan strengthening. The fracture surfaces of the tensile specimens tested at 298 Kconfirmed the presence of transgranular cleavage fracture which remained unchanged at 473 K as well.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼