摘要
以金属粉体为原料,采用热压烧结技术在不同温度下烧结制备了铝锌镁铜锆系铝合金,并测试和分析了其密度、物相、显微组织以及力学性能。结果表明:随着烧结温度的升高,铝合金的气孔率降低,致密度上升,组织更均匀,性能更优异;当烧结温度为600℃时,气孔率低至0.01%,接近全致密,铝合金的合金化良好,显微硬度达到174HV,抗拉强度达到502MPa;采用热压烧结技术可以获得高致密度、组织均匀、力学性能良好的铝合金。
Using metal powder as raw material, A1-Zn-Mg-Cu-Zr aluminium alloys were prepared by hot- press sintering technology at different sintering temperatures. The density, phase, microstructure and mechanical properties of A1-Zn-Mg-Cu-Zr aluminium alloy specimens were measured. The results show that with the increase of sintering temperature, the porosity of the aluminium alloy decreased, but density increased, and the alloy had more homogeneous microstructure and better properties. When the sintering temperature was 600 ℃, the porosity was 0. 01%, the aluminium alloy was close to completely dense and had a good degree of alloying. The maximum value of the average micro-hardness and tensile strength of the A1-Zn-Mg-Cu-Zr aluminium alloy specimen hit 174 HV and 502 MPa, respectively. The aluminium alloy with a high density, uniform structure and good mechanical property can be prepared by the hot-press sintering technology.
出处
《机械工程材料》
CAS
CSCD
北大核心
2013年第8期15-18,35,共5页
Materials For Mechanical Engineering
基金
国家自然科学基金资助项目(51202175)
湖北省自然科学基金资助项目(2011CDB245)
关键词
铝合金
热压烧结
抗拉强度
aluminium alloy
hot-pressing sintering
tensile strength
