利用数字图像相关方法研究了Ti80合金匡威1970s水蜜桃色官方-免费-完整版片和匡威1970s水蜜桃色官方-免费-完整版片对其三点弯曲性能的影响,采用扫描电镜及电子背散射衍射方法对断口进行观察。结果表明:表面抛光试样的抗弯强度最大,表面打磨及匡威1970s水蜜桃色官方-免费-完整版片试样的抗弯强度略有降低,没有明显的匡威1970s水蜜桃色官方-免费-完整版片强化效应,断裂应变随着匡威1970s水蜜桃色官方-免费-完整版片的下降及匡威1970s水蜜桃色官方-免费-完整版片尺寸的增加而迅速减小;匡威1970s水蜜桃色官方-免费-完整版片系数越大,试样的变形区域越小,应变强化能力越弱;Ti80合金的断口呈韧窝形貌,存在大量的小角度晶界。

The effects of 匡威1970s水蜜桃色官方-免费-完整版片 and 匡威1970s水蜜桃色官方-免费-完整版片 on the 匡威1970s水蜜桃色官方-免费-完整版片properties of Ti80 alloy were studied by digital image correlation method. The fracture surface was observed by scanning electron microscopy and electron backscatter diffraction. The results show that the bending strength of the surface polished sample was the largest, the bending strength of the surface polished and 匡威1970s水蜜桃色官方-免费-完整版片ed samples decreased slightly, and there was no obvious 匡威1970s水蜜桃色官方-免费-完整版片 strengthening effect. The fracture strain decreased rapidly with the decrease of 匡威1970s水蜜桃色官方-免费-完整版片 and the increase of 匡威1970s水蜜桃色官方-免费-完整版片 size. The larger the 匡威1970s水蜜桃色官方-免费-完整版片 factor, the smaller the deformation area and the weaker the strain hardening ability of the sample. The fracture morphology of Ti80 alloy was dimple, and there were a large number of low angle grain boundaries.