摘要
以TC11钛合金作为本文的实验材料,通过实施一系列不同温度的固溶处理,对合金的微观组织与拉伸性能进行深入全面实验研究,结果表明:初生α相的含量随着固溶温度的升高而减少,且其含量在固溶温度接近相变点时显著下降。并发现初生α相在固溶温度超过相变点后完全从组织中消失。固溶温度的提高有助于强化合金的抗拉强度和屈服强度,但合金塑性性能在此过程中会不断降低。固溶温度较低时的拉伸断口表面起伏不平,断口中韧窝的数量较多,韧窝的尺寸较大且深度较深。当固溶温度较高时,拉伸断口表面韧窝数量与尺寸均明显减少,断口主要以河流状花样和解理台阶为典型特征,且还出现了二次裂纹和撕裂棱。
Taking TC11 titanium alloy as the experimental material,the microstructure and tensile properties of the alloy were studied by a series of solid solution treatments at different temperatures.The results show that the number of primaryαphase decreases with the increase of solid solution temperature,and its content decreases significantly when the solid solution temperature is close to the phase transition point.It is also found that the primaryαphase disappears completely from the structure after the solid solution temperature exceeds the phase transition point.The increase of solution temperature helps to strengthen the tensile strength and tensile yield strength of the alloy,but the plastic properties of the alloy will continue to decrease during this process.When the solution temperature is low,the surface of the tensile fracture is uneven,the number of dimples in the fracture is large,and the size of the dimples is large and the depth is obvious.When the solution temperature is high,the number and size of dimples on the surface of the tensile fracture are significantly reduced.The fracture is mainly characterized by river-like patterns and cleavage steps,and secondary cracks and tearing edges also appear.
作者
陈文浩
张明玉
解炜
CHEN Wenhao;ZHANG Mingyu;XIE Wei(Xinjiang Xiangrun New Materials Technology Co.,Ltd.,Hami 839000,Xinjiang,China;Xi'an Hantang Analysis and Detection Co.,Ltd.,Xi'an 710000,Shaanxi,China)
出处
《四川冶金》
CAS
2024年第3期75-78,共4页
Sichuan Metallurgy
基金
自治区重点研发计划项目(2022B01029)。
关键词
TC11钛合金
微观组织
拉伸性能
断口微观形貌
TC11 titanium alloy
microstructure
tensile properties
fracture microstructure
