论文部分内容阅读
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。
The effect of solution temperature and solution time on microstructure and properties of medical biomagnesium alloy Mg-3Zn-1Y-0.6Zr-0.5Ca was studied by the preparation of alloy, observation of microstructure and testing of mechanical properties. Heat treatment process. The results show that both increasing the solution temperature and prolonging the holding time can make the second phase solute atoms fully dissolve into the magnesium matrix and increase the solid solubility, thereby increasing the tensile strength of the alloy but decreasing the ductility of the alloy. The experimental alloy after 460 ℃ solution 24 h, the tensile strength of 210 MPa, the elongation rate of 11.7%, greatly improving the mechanical properties of as-cast bio-magnesium alloy.