铈元素对铸造铝合金多路阀阀体材料性能影响  

Effect of Cerium on the Material Properties of Cast Aluminum Alloy Multi-valve Body

作　　者：李荣[1,2] 陈伦军[2] 苏明[1] 曾琦 

机构地区：[1]贵州师范大学大数据与计算机科学学院,贵阳550025 [2]贵州大学机械工程学院,贵阳550025 [3]贵阳华恒机械制造有限公司,贵阳550014

出　　处：《有色金属工程》2017年第4期27-31,共5页Nonferrous Metals Engineering

基　　金：贵州省工业攻关项目资助(黔科合GZ字[2015]3004);贵州省科技计划项目资助(黔科合LH字[2016]7222号)

摘　　要：为了提升铸造铝合金多路阀阀体的性能,在铸造过程中添加不同含量稀土元素,通过拉伸试验测试其机械性能并对材料的微观组织进行分析。结果表明,适量铈稀土(0.2%)的添加能够细化合金阀体材料的晶粒,提升材料的机械强度,但是稀土的添加对于合金材料的延伸率有一定的影响,过量的稀土添加将导致材料屈服强度的显著下降。添加适量的稀土元素可使铝合金多路阀阀体材料的综合性能获得一定提升。In order to improve the performance of multi valve for casting aluminum alloy, different contents of rare earth elements were added into the casting process, and mechanical properties were tested by tensile test, and the microstructure of the alloy was analyzed. The results show that the amount of cerium （0.2%） added to grain refinement alloy body material, can enhance the mechanical strength of the material, but the addition of rare earth alloy materials for extension ratio, excess addition of rare earth will cause the material yield strength significantly decrease. The addition of some rare earth elements can improve the comprehensive properties of the valve body of aluminum alloy muhiway valves.

关 键 词：铸造 铈 铝合金多路阀 阀体材料 

分 类 号：TH142.3[一般工业技术—材料科学与工程]