铜业工程Issue(5)：35-41,7.DOI:10.3969/j.issn.1009-3842.2025.05.005
TiB2含量对石墨-TiB2混杂增强铜基材料组织与力学性能的影响
Microstructure and Mechanical Properties of Graphite-TiB2 Hybrid Reinforced Copper-Based Composites with Different TiB2 Contents
摘要
Abstract
To clarify the relationship between the characteristic parameters of the reinforcement phases and the electrical conductivity and strength of Cu-based materials,the graphite-TiB2 hybrid reinforced Cu-based materials were successfully prepared by rapid vacu-um hot pressing sintering method.The effects of different TiB2 contents on the microstructure,physical and mechanical properties of the composites were studied.The optimal concentration of TiB2 in hybrid reinforced Cu-based materials,which enabled excellent elec-trical conductivity and compression resistance of the composites,was obtained.The results showed that the graphite had a long strip structure and the graphite basically appeared near TiB2 with an increasing in TiB2 contents.The relative density and conductivity of the composites decreased with an increasing in TiB2 contents.Especially,when the content exceeded 1%,the relative density and conduc-tivity of the composites decreased sharply.The microhardness of the composites increased from 64.7HV to 72.3HV with an increasing in TiB2 contents.The elastic modulus and compressive strength of the composites initially increased and then decreased with an in-creasing in TiB2 contents,and reached the maximum values at 1%,which were 126.53 GPa and 686.38 MPa,respectively.The hybrid reinforced Cu-based materials with TiB2 content of 1%had good comprehensive properties.关键词
混杂增强铜基材料/力学性能/导电性/断口形貌Key words
hybrid reinforced Cu-based materials/mechanical properties/electrical conductivity/fracture morphology引用本文复制引用
刘洋赈,李恒青,马春宇,郭柏松,李卫..TiB2含量对石墨-TiB2混杂增强铜基材料组织与力学性能的影响[J].铜业工程,2025,(5):35-41,7.基金项目
广州市基础与应用基础研究基金项目(202201011851,2024A04J3963) （202201011851,2024A04J3963）
广州职业技术大学校级项目(2021SZ07)资助 （2021SZ07）
