摘要
采用熔铸、挤压的方法制备了60Cu-Zn-xMg(x=2,4,6,at.%)棒材。利用光学显微镜(OM)、X射线衍射仪(XRD)、电子万能试验机、CK7525卧式车床等手段对镁黄铜的微观组织、力学性能和切削性能进行了研究。结果表明,当镁含量x≥4at.%时,合金物相由α相、β相和Cu2Mg相组成;随着镁含量的增加,合金塑性下降,切削性能提高;试验所制备合金的力学性能均与C36000相当。
The 60Cu-Zn-xMg （x=2, 4, 6, at,% ）, a new environmental friendly magnesium brasses was fabricated by cast and extrusion. The microstructure of the alloy was observed using optical microscope （OM） and the mechanical and cutting properties were studied. The results show that a-phase, 15-phase and Cu2Mg phase exist in the alloy, as the content of magnesium greater than or equal to 4 at.%, and with the increasing of magnesium content, the plastic property decreased and the cutting property improved. The mechanical properties of the test alloys are equivalent to the C36000.
出处
《铸造》
CAS
CSCD
北大核心
2009年第10期995-997,1001,共4页
Foundry
基金
国家"十一五"重点课题支撑计划(2006BRE03B02)
关键词
镁黄铜
微观组织
性能
易切削
magnesium brass
microstructure
properties
free cutting
