宇航材料工艺2025，Vol.55Issue(2)：104-111,8.DOI:10.12044/j.issn.1007-2330.2025.02.014
电脉冲的热效应对TC11钛合金切削加工性能的影响
Influence of Thermal Effect of Electroplastic Effect on Machining Performance of TC11 Titanium Tlloy
摘要
Abstract
In order to study the influence of the thermal effect of electric pulse on the cutting process of titanium alloys,the TC11 titanium alloy was preheated using the pulse current,the effect of thermal effect of electric pulse on cutting temperature,chip formation,workpiece surface morphology,workpiece surface roughness,etc.was studied.And the cutting process was simulated by finite element using Abaqus software to analyze the temperature field and strain field of cutting zone during the cutting process,the influence of the thermal effect of the electric pulse on the cutting performance of TC11 titanium alloy was revealed.The results showed that with the gradual increase of workpiece surface temperature,the plasticity of TC11 titanium alloy material was improved,the equivalent plastic strain of the cutting process was increased,the surface morphology of the workpiece became smooth,the surface roughness value was decreased,and the chip serrated degree was decreased.When the workpiece surface temperature was increased from 140℃ to 180℃,the surface oxidation of the workpiece surface appeared,the hardness of the workpiece surface was enhanced,the surface morphology of the workpiece became rougher,the deformation coefficient and the separation degree of chip were reduced and enhanced,respectively.The thermal effect is as part of the electroplastic effect,the appropriate thermal effect can improve the plasticity of the workpiece surface material,the cutting performance of TC11 titanium alloy has a significant beneficial effect,but excessively high temperature leads to the workpiece surface oxidation and the hardness enhancement,worsening the cutting performance.Therefore,the thermal effect of electric pulse needs to be reasonably controlled in practical application to achieve the best cutting performance.关键词
TC11钛合金/热效应/工件表面温度/有限元仿真Key words
TC11 titanium alloy/Thermal effect/Workpiece surface temperature/Finite element simulation分类
矿业与冶金引用本文复制引用
孙富建,李亚洲,廖君慧,杨志勇,李时春..电脉冲的热效应对TC11钛合金切削加工性能的影响[J].宇航材料工艺,2025,55(2):104-111,8.基金项目
湖南省自然科学基金面上项目(2023JJ30255) （2023JJ30255）
湖南省教育厅科学研究重点项目(23A0354) （23A0354）
