摘要
针对TiAl 45XD合金材料开展了电化学溶解特性分析,对比了材料的理论和实际溶解特性曲线。研究表明,TiAl 45XD合金材料具有良好的电解加工可行性。通过改变电解加工工艺参数,研究了终止间隙、脉冲宽度和振动周期对电解加工表面质量的影响,在优化工艺参数下加工表面无晶间腐蚀和点蚀。在叶片样件上进行了电解加工工艺验证,得到了叶身型面表面粗糙度为0.61μm,叶盆叶背型面轮廓度偏差为–0.015 mm~+0.022 mm的叶片,为TiAl 45XD合金材料复杂型面典型构件的电解加工奠定了基础。
In this work,the dissolution behavior of TiAl 45XD were analyzed,the comparison of theoretical and practical dissolution behavior curves indicated that TiAl 45XD displayed good feasibility of electrochemical machining(ECM).The effects of ending inter-electrode gap,pulse durations,and vibrating periods on the machining surface quality were investigated by varying the ECM parameters.The obtained surface exhibited high quality surface without intergranular corrosion and pitting with optimizing process parameters.The process validation were carried out on TiAl 45XD blade samples and the obtained blades showed the roughness of 0.61μm and concave and convex profile tolerance of–0.015 mm–+0.022 mm,which lays a foundation for the electrolytic machining of typical components with complex profiles of TiAl 45XD alloy.
作者
刘萌
张明岐
黄明涛
程小元
LIU Meng;ZHANG Mingqi;HUANG Mingtao;CHENG Xiaoyuan(AVIC Manufacturing Technology Institute,Beijing 100024,China)
出处
《航空制造技术》
CSCD
北大核心
2022年第19期94-99,共6页
Aeronautical Manufacturing Technology
基金
国家科技重大专项(2017-Ⅶ-0004-0097)。
