挤压铸造ZX60镁合金组织和力学性能研究
发布时间：2018-11-18 16:57
【摘要】：采用X射线衍射仪、光学显微镜、扫描电镜、透射电镜和拉伸试验研究了浇注温度和T6热处理对挤压铸造Mg-6Zn-0.1Ca-0.5Mn(ZX60)合金组织和力学性能的影响。研究表明,铸态合金的相组成为Mg基体和第二相MgZn_2相。随着浇注温度由720℃降低至680℃,铸态组织枝晶间距减小,连续、粗大的第二相趋向于弥散分布,合金屈服强度提高但抗拉强度和伸长率下降。ZX60镁合金经T6热处理后,主要强化相为沿[0001]_Mg分布的杆状MgZn_2相,其屈服强度、抗拉强度和伸长率相对于铸态分别提高了122%、62%和32%。
[Abstract]:The effects of pouring temperature and T6 heat treatment on the microstructure and mechanical properties of squeeze casting Mg-6Zn-0.1Ca-0.5Mn (ZX60) alloy were investigated by X-ray diffractometer, optical microscope, scanning electron microscope, transmission electron microscope and tensile test. The results show that the phase composition of the as-cast alloy is Mg matrix and second phase MgZn_2 phase. With the decrease of pouring temperature from 720 鈩，
本文编号：2340595
[Abstract]:The effects of pouring temperature and T6 heat treatment on the microstructure and mechanical properties of squeeze casting Mg-6Zn-0.1Ca-0.5Mn (ZX60) alloy were investigated by X-ray diffractometer, optical microscope, scanning electron microscope, transmission electron microscope and tensile test. The results show that the phase composition of the as-cast alloy is Mg matrix and second phase MgZn_2 phase. With the decrease of pouring temperature from 720 鈩，
本文编号：2340595
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