摘要
针对镍基高温合金GH4169材料开展电解加工试验,确定试件在不同电流密度下的材料溶解速度;开展不同深度下的电解加工试验,每溶解10μm左右的深度,测量残余应力,确定GH4169磨削件的残余应力层深度约为50μm。为了避免磨削应力层对结果的影响,确定电解加工深度约为180μm,开展不同电流密度的电解加工试验。检测分析表明,不同电流密度下的试件表面残余应力σ_(x)从-405 MPa~-778 MPa下降到-65 MPa~103 MPa。
As for nickel-based superalloy GH4169 material,electrochemical machining tests were conducted to determine the material dissolution rate of the specimen under different current densities.Electrochemical machining tests at different depths were applied,the residual stress for each dissolution depth of about 10μm was measured,and the depth of the residual stress layer of the GH4169 grinding parts was determined around 50μm.In order to avoid the influence of the grinding stress layer over the results,the electrochemical machining depth was determined to be about 180μm,and electrochemical machining experiments with different current densities were carried out.The test analysis shows that the residual stress σ_(x) on the surface of the specimen decreases from-405 MPa to-778 MPa to-65 MPa-103 MPa in different current densities.
作者
陆嘉文
朱栋
王福平
任明珠
庞曰群
LU Jiawen;ZHU Dong;WANG Fuping;REN Mingzhu;PANG Yuequn(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;AECC Aviation Power Co.,Ltd,Xi’an 710021,China)
出处
《机械制造与自动化》
2021年第6期14-16,20,共4页
Machine Building & Automation
基金
国家自然科学基金重大研究计划培育项目(91860135)
国家科技重大专项(2017-VII-0004-0097)
南航研究生创新基地(实验室)开放基金资助项目(kfjj20190510)。
