机电工程技术2025，Vol.54Issue(8)：1-5,52,6.DOI:10.3969/j.issn.1009-9492.2024.00132
基于NSGA-Ⅱ的TiAl合金脉冲电解加工工艺参数优化
Parameters Optimization of Pulse Electrochemical Machining for TiAl Alloy Based on NSGA-Ⅱ
摘要
Abstract
The electrochemical machining process involves complex coupling effects of multiple factors such as electric field,chemical field,flow field,and temperature field,and it is difficult to explore the global optimal parameters using conventional process optimization methods.Aiming at the multi-objective optimization problem of TiAl alloy pulse electrochemical machining process parameters,orthogonal experiments with voltage,duty cycle,electrolyte pressure and feed rate as influencing factors is designed.Pre treated Ti-48Al-2Cr-2Nb alloy ingots are used as experimental samples for pulse electrochemical machining experiments on CNC electrochemical machining machines.After the machining is completed,the surface roughness,microstructure complexity and material removal rate of the samples are measured and used as optimization objectives.Function models between each factor and the optimization objectives are constructed,and the optimal process combination is obtained through NSGA-II algorithm and CRITIC method decision:voltage 16 V;duty cycle of 40%;electrolyte pressure 0.35 MPa;feed rate of 1.0 mm/min.Under optimized conditions,the surface roughness is reduced by 45.3%,the microstructure complexity is increased by 0.12%,and the material removal rate is increased by 22.5%.The relative errors with model predictions are+4.17%,-0.07%and+5.46%,respectively.关键词
NSGA-Ⅱ算法/TiAl合金/电解加工/参数优化Key words
NSGA-Ⅱ algorithm/TiAl alloy/ECM/parameter optimization分类
金属材料引用本文复制引用
龚晨,陈年,李凌,唐卿,廖翠姣..基于NSGA-Ⅱ的TiAl合金脉冲电解加工工艺参数优化[J].机电工程技术,2025,54(8):1-5,52,6.基金项目
国家自然科学基金(22072040) （22072040）
