CAJ | 학술논문

采用OM、SEM和TEM分析手段对Cu-Cr-Zr合金的铸态和均匀化组织进行研究.结果表明， Cu-Cr-Zr合金的铸态组织呈典型的枝晶状组织，主要由网状的Cr枝晶、共晶组织和基体组成，其中共晶组织是由基体和层片状的Cu5Zr相组成.在Cu-Cr-Zr合金的均匀化退火过程中，发生共晶组织的溶解和Cr相的析出.随着均匀化退火温度和时间的升高和延长，共晶组织逐渐溶解，Cr相的析出体积分数逐渐减小.合理的均匀化退火制度为900℃×12 h.
채용OM、SEM화TEM분석수단대Cu-Cr-Zr합금적주태화균균화조직진행연구.결과표명， Cu-Cr-Zr합금적주태조직정전형적지정상조직，주요유망상적Cr지정、공정조직화기체조성，기중공정조직시유기체화층편상적Cu5Zr상조성.재Cu-Cr-Zr합금적균균화퇴화과정중，발생공정조직적용해화Cr상적석출.수착균균화퇴화온도화시간적승고화연장，공정조직축점용해，Cr상적석출체적분수축점감소.합리적균균화퇴화제도위900℃×12 h.
The as-cast and homogeneous microstructures are analyzed by optical microscope, scanning electron microscope and transmission electron microscope. The results show that the as-cast microstructure of Cu-Cr-Zr alloy is typical dendritic structure which is mainly made up of Cr dendrite and eutectic structures and matrix. Eutectic structures are composed of Cu and Cu5Zr phase with a fine lamellar structure. By increasing the homogenization temperature or prolonging the holding time, the eutectic structure is dissolved into the matrix gradually with obvious reduced fraction volume and Cr phases. The proper homog enizing process is 900℃×12 h.