机电工程技术2025，Vol.54Issue(4)：46-49,111,5.DOI:10.3969/j.issn.1009-9492.2025.04.007
电流波形对2209双相不锈钢双丝增材制造的影响
Influence of Current Waveform on Dual-wire Additive Manufacturing of 2209 Duplex Stainless Steel
摘要
Abstract
To investigate the influence of current waveform on additive manufacturing,wire arc double-wire additive manufacturing of 2209 duplex stainless steel is conducted using two current waveforms,CMT-P and DC-P,and the morphology and mechanical properties of the additive manufacturing samples are comparatively studied.It is shown that,at the same cladding rate,clear texture between the layers and consistent weld width are observed in the additive manufacturing samples using the CMT-P mode,and the forming accuracy is higher,being superior to the DC-P mode.The microstructure of both additive manufacturing samples is mainly composed of α-ferrite and γ-austenite,and no significant difference is observed between the two.The microhardness of the additive manufacturing samples using the CMT-P mode is superior to that of the DC-P mode,with the average microhardness of the former being 164 HV0.3,and the maximum microhardness being 179.7 HV0.3,while the average microhardness of the latter is 160 HV0.3,and the maximum microhardness is 161 HV0.3.The tensile properties of the additive manufacturing samples using both current waveforms are relatively close,with the maximum transverse tensile strengths being 526 MPa and 511 MPa,respectively,and the maximum longitudinal tensile strength being 546 MPa for both,and the fracture mode of both being ductile fracture.Therefore,the additive manufacturing samples using the CMT-P mode are superior to those using the DC-P mode.关键词
电流波形/电弧双丝增材制造/2209双相不锈钢/力学性能/微观组织Key words
current waveform/wire arc double-wire additive manufacturing/2209 duplex stainless steel/mechanical properties/microstructure分类
矿业与冶金引用本文复制引用
陈文仕,何日恒,金礼,姚屏..电流波形对2209双相不锈钢双丝增材制造的影响[J].机电工程技术,2025,54(4):46-49,111,5.基金项目
国家自然科学基金资助项目(51805099) （51805099）
广东省教育厅重大专项资助项目(2020ZDZX2019) （2020ZDZX2019）
贵州省省级科技计划项目(ZK[2022]198,ZK[2024]063) （ZK[2022]198,ZK[2024]063）
