复合场作用下Al-5.0Cu-1.0Fe合金的显微组织和力学性能
发布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新时间：2016-05-06
将压力场和超声场复合作用于铝合金的凝固过程，并对比分析无外场、单一外场(压力场、超声场)和复合场的作用效果。采用定量金相分析、扫描电镜、电子探针等手段研究压力场、超声场以及压力和超声复合场作用下Al-5.0Cu-1.0Fe合金的显微组织和显微硬度。
复合场作用下Al-5.0Cu-1.0Fe合金的显微组织和力学性能Microstructure and mechanical property of Al-5.0Cu-1.0Fe alloy treated by compound field将压力场和超声场复合作用于铝合金的凝固过程，并对比分析无外场、单一外场(压力场、超声场)和复合场的作用效果。采用定量金相分析、扫描电镜、电子探针等手段研究压力场、超声场以及压力和超声复合场作用下Al-5.0Cu-1.0Fe合金的显微组织和显微硬度。结果表明:分别施加50 MPa压力场和800 W超声场均能减少α(Al)二次枝晶间距，细化并分散富铁相和θ(Al2Cu)相，同时改变富铁相的形貌，使针状的Al7Cu2Fe相转变成汉字状的富铁相Al6(CuFe);同时复合场比单一外场能更大程度地细化α(Al)二次枝晶间距、富铁相和θ(Al2Cu)相;单独施加压力50 MPa比单独施加800 W的超声更能够有效减少缩松，但同时施加压力和超声时效果最佳;同时施加压力和超声场时可获得最高的α(Al)基体显微硬度。对复合场的作用效果进行初步探讨，这是超声场的空化效应以及声流效应和压力场的压力效应共同作用的结果。
Compound field was firstly used to influence the solidification of Al alloy, and the effect of different field on the microstructure and mechanical properties was investigated. The microstructure and micro-hardness of Al-5.0Cu-1.0Fe alloy treated by compound field (combination of 50 MPa pressure field and 800 W ultrasonic field) were studied by image analysis, scanning electron microscopy and electron probe micro-analysis. The results show that both 50 MPa pressure field and ultrasonic field decrease the second dendritic arm spacing, thin and spread the second intermetallics. Meanwhile, large amounts of iron-rich phases transform from acicular shape to Chinese script morphology. Compared with the single field, the microstructure of the alloy treated by compound field is refined and modified more obviously. The casting defects, such as porosity, are reduced more efficiently when 50 MPa pressure field is applied, and the alloy applied compound field has the highest micro-hardness with the smallest volume percentage of porosity. The mechanism of compound field was also preliminarily discussed, which results from ultrasonically-induced cavitation and acoustic streaming effect and pressurely-induced pressure effect.
作为值得信赖的合作伙伴和高品质金属合金的半成品供应商，艾荔艾拥有完善的服务体系和专业的团队。在同客户交易的过程中，我们力求根据不同的应用需求将我们的产品做到精益求精。针对当前和未来的市场需求，艾荔艾致力于为客户提供最佳的金属材料解决方案。
AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
获取更多我们供应的合金和服务信息，请致电086-021-67660801或发电子邮件kefu@ailiaigroup.com联系我们，您也可以通过微博，微信，领英，XING，脸书和推特与我们互动。
For more information on the alloys and services that we supply, call us at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on Weibo, Weixin, LinkedIn, XING, Facebook and Twitter.