退火温度对旋压钛筒微观组织及力学性能的影响

Effects of annealing temperature on microstructure and mechanical properties of spinning titanium cylinder

  • 摘要: 本文通过对钛筒分别在510℃、520℃、530℃、540℃保温相同的时间,探究旋压钛筒组织和性能的变化规律。结果表明:钛筒的晶粒度等级与导电率随着温度的升高呈现先升高后降低的趋势,在520℃时晶粒度等级达到最高12级,导电率达到3.44%IACS。钛筒的硬度与抗拉强度随着退火温度的升高而降低,硬度从旋压态190.56 HV降低至540℃时的133.57HV,抗拉强度从旋压态434MPa逐步降低到296MPa,延伸率从24.3%升高至44.3%。

     

    Abstract:  In this paper, the changes of the structure and properties of the spinning titanium cylinder were studied by keeping the titanium cylinders at 510°C, 520°C, 530°C and 540°C for the same time. The results show that: The grain size grade and conductivity of the titanium cylinder increased first and then decreased with the increase of the temperature. At 520℃, the grain size grade reached the highest grade 12 and the conductivity reached 3.44%IACS. The hardness and tensile strength of titanium cylinder decreased with the increase of annealing temperature, the hardness decreased from 190.56HV in spinning state to 133.57HV at 540℃, and the tensile strength gradually decreased from 434MPa in spinning state to 296MPa, the elongation increased from 24.3% to 44.3%.

     

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