机电工程技术2025，Vol.54Issue(3)：121-126,6.DOI:10.3969/j.issn.1009-9492.2025.03.022
碳化钒对黏结剂喷射增材制造硬质合金显微结构及力学性能的影响
Effect of Vanadium Carbide on the Microstructure and Mechanical Properties of the Binder Jetting Additive Manufactured Cemented Carbides
摘要
Abstract
Abnormal WC grain growth is the major challenge in the binder jetting additive manufacturing of cement carbide components.To address these issue,vanadium carbide is selected as a WC grain growth inhibitor,and the effects of vanadium carbide additives content on the microstructure and mechanical properties of the binder jetting additively manufactured cemented carbides are systematically studied.Through the microstructure observation,it is found that the addition of vanadium carbide efficiently suppresses the abnormal WC grain growth of the binder jetting additively manufactured cemented carbides.It also leads to a significant WC grain refinement effect and results in a uniform microstructure.Besides,the addition of vanadium carbide also reduces the surface roughness of the cemented carbide sintered sample,and with 0.5%addition of vanadium carbide(weight),the surface roughness of the sintered sample is found to be decreased to the lowest 4.51 μm from 6.49 μm.Characterization of the mechanical properties also reveal that 5%vanadium carbides additive(weight)has the optimum effect on both microstructure and mechanical property improvement,both hardness and bending strength of the sintered cemented carbides exhibit an increase from 1 085 HV30 to 1 156 HV30 and from 2 119 MPa to 2 214 MPa,respectively.Yet,the fracture toughness decreases slightly from 16.9 MPa to 14.3 MPa.关键词
硬质合金/碳化钒/黏结剂喷射增材制造/显微结构/力学性能Key words
cemented carbides/vanadium carbides/binder jetting additive manufacturing/microstructure/mechanical properties分类
通用工业技术引用本文复制引用
金枫,杨温鑫,陈永轩,邓欣..碳化钒对黏结剂喷射增材制造硬质合金显微结构及力学性能的影响[J].机电工程技术,2025,54(3):121-126,6.基金项目
2019佛山市科技创新团队项目(FS0AA-KJ919-4402-0023) （FS0AA-KJ919-4402-0023）
阳江市引进创新科研团队项目(RCZX2024003) （RCZX2024003）
