铸造技术2025，Vol.46Issue(5)：416-423,8.DOI:10.16410/j.issn1000-8365.2025.5073
超声辅助凝固制备Cu-Ti合金组织及性能研究
Research on the Microstructure and Properties of Cu-Ti Alloys Prepared by Ultrasonic-assisted Solidification
摘要
Abstract
As high-strength and high-elasticity copper alloys,copper-titanium alloys are characterized by excellent strength,thermal conductivity,high-temperature stability and stress relaxation resistance and are considered ideal materials for replacing beryllium bronze.However,the differences in the physical properties of titanium and copper are significant,and the solubility of Ti in Cu at room temperature is limited.The microstructure segregation of the copper-titanium alloy is severe,and many coarse primary phases are inevitable,which restricts the improvement in strength and electrical conductivity.In this study,ultrasonic-assisted solidification was used to prepare a copper-titanium alloy,and the influence of ultrasonic power on the microstructure of the copper-titanium alloy was systematically discussed.The microsegregation is improved,the grain size and primary phase size are significantly refined,and the content of the Ti-rich phase is reduced after ultrasonic treatment.Under the same thermomechanical treatment,the tensile strength of the copper-titanium alloy increases from 801.38 MPa to 851.0 MPa,and the electrical conductivity increases from 15.31％IACS to 15.68％IACS.The simultaneous improvement in the mechanical and electrical conductivity properties is directly related to the refinement of the grain size and the reduction in the content of the primary phase under ultrasonic treatment.关键词
铜钛合金/超声凝固/电弧熔炼/组织调控/力学性能/导电性能Key words
copper-titanium alloy/ultrasonic solidification/arc melting/microstructure control/mechanical property/electrical conductivity分类
金属材料引用本文复制引用
张喆,高楠熙,雷作栋,崔尚坤,曹飞,邹军涛,王文,王快社..超声辅助凝固制备Cu-Ti合金组织及性能研究[J].铸造技术,2025,46(5):416-423,8.基金项目
国家重点研发计划(2023YFB3710002) （2023YFB3710002）
国家自然科学基金(52401197) （52401197）
