CAJ | 학술논문

采用光学显微镜、XRD、扫描电镜、能谱分析等手段相结合的方法,研究了不同浇注温度及Ce、Sb加入顺序对Mg-3%Al-1%Ce-1%Sb合金显微组织及显微硬度的影响.结果表明:熔炼工艺对铸态Mg-3%Al-1%Ce-1%Sb合金中的第二相形态有明显影响.采用同时加入Ce、Sb,在较高温度浇注,可显著减少棒状相的数量,得到以球状颗粒为主的第二相,并使Mg-3%Al-1%Ce-1%Sb合金的显微硬度有所降低.球状颗粒主要为含Ce、Sb、Mg和O或含Mg和Al的相;棒状相主要含有Al、Sb和O.
채용광학현미경、XRD、소묘전경、능보분석등수단상결합적방법,연구료불동요주온도급Ce、Sb가입순서대Mg-3%Al-1%Ce-1%Sb합금현미조직급현미경도적영향.결과표명:용련공예대주태Mg-3%Al-1%Ce-1%Sb합금중적제이상형태유명현영향.채용동시가입Ce、Sb,재교고온도요주,가현저감소봉상상적수량,득도이구상과립위주적제이상,병사Mg-3%Al-1%Ce-1%Sb합금적현미경도유소강저.구상과립주요위함Ce、Sb、Mg화O혹함Mg화Al적상;봉상상주요함유Al、Sb화O.
The effects of pouring temperature and adding order of cerium and antimony on the microstructure and micro hardness of Mg-3%Al-1%Ce-1%Sb alloys were investigated by optical microscope, XRD, SEM and EDAS. The results show that the smelting process has visible influences on the microstructures of the said alloys. The second phases in Mg-3%Al-1%Ce-1%Sb alloy mainly consists of spherical particles with a slight amount of rod-like particles and the micro hardness of the alloy decreases slightly when cerium and antimony was added simultaneously and poured at a higher temperature. The spherical particles include two kinds:either containing cerium, antimony, magnesium and oxygen or bearing aluminum, antimony and oxygen.