Residual Stresses in Prestressed Turning of Nickel-based Superalloy
Aiming to get appropriate residual compressive stress distribution on machined surface just in the machining process,the technique of prestressed cutting is applied for nickel-based superalloy shafts.This article studies theoretically and experimentally the effect of prestress on the residual stress in the machined surface layer.Prestressed turning tests under the conditions of different prestress,cutting speed,depth of cut and feed rate were carried out,residual stresses were determined via an X-ray diffraction technique.Theoretical result demonstrates that higher prestress leads to more prominent residual compressive stress and validated by experiments,meanwhile measured residual stress profiles indicate that lower cutting speed and lower feed rate lead to more remarkable compressive stress state,contrarily depth of cut shows relatively indistinctive effect.
Superalloy Residual Stress Prestressed Cutting Fatigue life X-ray Diffraction
Rui Tao Peng Fang Lu Xin Zi Tang Yuan Qiang Tan
School of Mechanical Engineering, Xiangtan University, China
国际会议
香港
英文
242-246
2012-12-11（万方平台首次上网日期，不代表论文的发表时间）