【摘要】 研究了不同时效温度对Ti-45Nb合金的显微组织和力学性能的影响。结果表明:随着时效温度的提高,Ti-45Nb合金基本上未发现析出第二相,呈单一等轴状的β相组织;其抗拉强度、屈服强度和剪切强度先增加后减小,显微组织及拉伸塑性的变化不很明显;当时效温度为300℃时,合金获得了较理想的塑性以及拉伸强度与剪切强度的良好综合力学性能。更多还原

【Abstract】 Effect of microstructure and mechanical properties of Ti-45 Nb alloy with different aging temperatures was investigated. The results show that with increasing of aging temperature of Ti-45 Nb alloy,the precipitation of the second phases is not observed,but the equaled crystalβ phase is presented. The tension strength,yield strength and shear strength first increase and then decrease,the microstructure and tensile plasticity do not change obviously. However the better comprehensive mechanical properties of good plasticity,tensile and shear strength are obtained under aging temperature at 300 ℃.更多还原