固溶处理对Mg-Zn-Y-Zr-Ca生物镁合金微观组织和力学性能的影响

发布时间：2018-01-19 09:20

  本文关键词： 生物镁合金 固溶处理 微观组织 力学性能　出处：《材料热处理学报》2017年06期 　论文类型：期刊论文

【摘要】：通过合金的制备,微观组织的观察以及力学性能的测试,研究了固溶温度以及固溶时间对医用生物镁合金Mg-3Zn-1Y-0.6Zr-0.5Ca组织和性能的影响,选择出最佳的热处理工艺。结果表明:提高固溶温度和延长保温时间都能够使第二相溶质原子充分溶进镁基体,增大固溶度,从而提高合金的抗拉强度,但会使合金的塑性下降。本实验合金经过460℃固溶24 h后,抗拉强度达到210 MPa,伸长率达到11.7%,大大提高了铸态生物镁合金的力学性能。
[Abstract]:The alloy was prepared, the microstructure was observed and the mechanical properties were tested. The effects of solution temperature and solution time on the microstructure and properties of biomedical magnesium alloy Mg-3Zn-1Y-0.6Zr-0.5Ca were studied. The optimum heat treatment process is selected. The results show that the second phase solute atom can be fully dissolved into the magnesium matrix and the solution degree can be increased by increasing the solution temperature and prolonging the holding time, thus improving the tensile strength of the alloy. After 24 h solution at 460 鈩，

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