机械振动对铸造铝合金组织与性能的影响  

Effect of Mechanical Vibration on Microstructure and Properties of Casting Aluminum Alloy

作　　者：李金松 谢明芳[2] 

机构地区：[1]江苏省盐南中等专业学校机械材料系,江苏盐城224041 [2]盐城机电高等职业技术学校机械材料系,江苏盐城224000

出　　处：《铸造技术》2016年第12期2681-2684,共4页Foundry Technology

摘　　要：在AlSi10Mg铸造铝合金凝固过程中施加不同的机械振动幅度和机械振动频率的振动处理,研究了机械振动参数对AlSi10Mg合金组织和力学性能的影响。结果表明,随着机械振幅的增加,合金的抗拉强度和断后伸长率呈现先增加而后降低的趋势,在机械振幅为0.11mm时取得最大值;随着机械振动频率的增加,合金的抗拉强度和断后伸长率呈现先增加而后降低的趋势,在机械振动频率为36Hz时取得最大值;AlSi10Mg合金在凝固过程中的适宜的机械振动参数为:机械振幅为0.11mm、机械振动频率为36Hz。机械振动改善AlSi10Mg铸造铝合金的强度和塑性主要与合金的组织均匀性和晶粒细化有关。AlSi10Mg casting aluminum alloy was prepared under different mechanical vibration amplitude and vibration frequency, and the effects of mechanical vibration parameters on the microstructure and properties of AlSi10Mg alloy were investigated. The results show that, with the increase of mechanical vibration amplitude, the tensile strength and elongation show first increasing and then decreasing, and the maximum value is got when the amplitude is 0.11 mm. With the increase of mechanical vibration frequency, the tensile strength and elongation show first increasing and then decreasing, and the maximum value is got when the fxequency is 36 Hz. The suitable mechanical vibration parameters for the alloy is the amplitude of 0.11 mm, the frequency of 36 Hz. Mechanical vibration can improve the strength and plasticity of AlSi10Mg casting aluminum alloy due to the uniformity microstructure and grain refinement.

关 键 词：机械振动 AlSi10Mg铸造铝合金 组织 性能 

分 类 号：TG292[金属学及工艺—铸造] TG146.21[一般工业技术—材料科学与工程]