【作者】 向青春； 赵静； 吕立博； 黄云龙； 李荣德；

【Author】 XIANG Qing-chun,ZHAO Jing,Lv Li-bo,HUANG Yun-long,LI Rong-de (School of Materials Science and Engineering,Shenyang University of Technology,Shenyang,110780,Liaoning,China)

【机构】 沈阳工业大学材料科学与工程学院；

【摘要】 制备了六种不同Er含量的锌铝合金。通过拉伸力学性能测试、金相显微组织观察、X射线衍射分析、扫描电镜观察及能谱分析等手段,研究了稀土元素Er对Zn-43Al-0.8Cu合金铸态显微组织和力学性能的影响。研究发现:当稀土元素Er含量为0.8%时,该合金中能生成Al2Er相,有效地阻止合金中树枝状晶长大,细化了晶粒,大大地提高了合金铸态抗拉强度性能。更多还原

【Abstract】 Six kinds of Zn-43Al-0.8Cu alloys with different contents of rare earth Er element were prepared.By the tensile test,metallurgical microstructure observation,X-ray diffraction analysis,scanning electron microscope and energy spectrum analysis,the effects of rare earth Er on the as-cast microstructure and mechanical properties of Zn-43Al-0.8Cu alloy were investigated.It has been experimentally observed that when 0.8% Er is added in the alloy,the Al2Er phase is facilitated to form in the microstructure of the alloy,which can effectively interfere the fromation of the dentritic microstructure and refine the grains of the alloy.Thus,the tensile strength of the alloy is greatly improved.更多还原