摘要
选取新型锻造工艺制成的TA10钛合金棒材,利用光学显微镜、维氏硬度测试和拉伸性能测试,研究其组织与力学性能的关系。结果表明,经锻造加工后的TA10钛合金棒材组织为等轴组织,主要由等轴状初生α相组成,组织中还包含少β转变组织,棒材T向的初生α相等轴化程度更高;棒材抗拉强度和屈服强度均是T向较高,在塑性方面,其T向与L向塑性性能接近,在硬度方面,T向与L向的硬度值几乎一致,差异较小;棒材T向与L向拉伸断口微观形貌几乎一致,均是以等轴状韧窝为主,在棒材的断口微观形貌中还发现少量的二次裂纹。
The relationship between microstructure and mechanical properties of TA10 titanium alloy bar made by new forging process was studied by optical microscope,Vickers hardness(VH) test and tensile property test.The results show that the microstructure of TA10 titanium alloy bar after forging is equiaxed structure,which is mainly composed of equiaxed primary α phase,and the structure also contains less β transformation structure,and the primary α phase in T direction of bar is more equiaxed.The tensile strength and yield strength of the bar are higher in T direction,and the plasticity in T direction is close to that in L direction.In terms of hardness,the hardness values in T direction and L direction are almost the same,and the difference is small.The micro-morphology of tensile fracture in T direction and L direction is almost the same,mainly equiaxed dimples,and a small amount of secondary cracks are found in the fracture morphology of bars.
出处
《科技创新与应用》
2022年第26期86-88,92,共4页
Technology Innovation and Application
基金
新疆钛基新材料重点实验室,2021年度自治区创新环境(人才、基地)建设专项(XJQY2009)。
关键词
TA10钛合金
金相组织
拉伸性能
维氏硬度
断口形貌
TA10 titanium alloy
metallographic structure
tensile properties
vickers hardness
fracture morphology
