Affiliation of Author(s):机电学院
Journal:RARE METAL MATERIALS AND ENGINEERING
Key Words:residual stress corrode FEA (finite element analysis) X-ray diffraction (XRD)
Abstract:In order to predict the deformations caused by surface residual stresses generated by milling of Ti6A14V parts, a method for measuring the equivalent surface residual stresses and the effective depth was presented. The material in the surface opposite to the machined surface was removed twice; therefore, the thickness and the neutral layer of the workpiece were changed. Afterwards, the change of the bending deflections and the strains on the machined surface was measured, and then the equivalent surface residual stresses and the effective depth were calculated. FEA (finite element analysis) was used to validate the correctness of this method. The results calculated by FEA correspond well with those measured in the experiments. So it can be concluded that the results got from the method proposed in this paper are correct. It can be used to evaluate the surface residual stresses generated by milling and to predict the deformations caused by surface residual stresses, thereby forecasting whether the parts accuracy can meet the requirement.
ISSN No.:1002-185X
Translation or Not:no
Date of Publication:2017-01-01
Co-author:Meng Longhui,hn,Zhao Wei
Correspondence Author:Yang Yinfei
Date of Publication:2017-01-01