BaF对2507超级双相不锈钢电弧增材制造组织和力学性能的影响  

Influence of BaF on Microstructure and Mechanical Properties of 2507 Duplex Stainless Steel Fabricated by Arc Additive Manufacturing

作　　者：谈珂威 缪康 郭春富 TAN Kewei;LIAO Kang;GUO Chunfu(Southeast University Chengxian College,Nanjing 210088,China;Jiangsu Provincial Transportation Engineering Group Co.,Ltd.,Zhenjiang 212028,China;Guangdong Provincial Key Laboratory of Advanced Welding Technology,China-Ukraine Institute of Welding,Guangdong Academy of Sciences,Guangzhou 510650,China)

机构地区：[1]东南大学成贤学院,江苏南京210088 [2]江苏省交通工程集团有限公司,江苏镇江212028 [3]广东省科学院中乌焊接研究所广东省现代焊接技术重点试验室,广东广州510650

出　　处：《热加工工艺》2025年第6期103-107,共5页Hot Working Technology

基　　金：校级青年教师科研发展基金项目(z0048)。

摘　　要：采用直径为1.2 mm的ER2594超级双相不锈钢焊丝进行了多层单道墙体电弧增材试验,并在增材过程中以涂覆的方式引入了BaF作为活性剂,对增材件在构筑方向和沉积方向的显微组织及力学性能进行了分析。结果表明:通过在电弧增材过程中添加BaF活性剂,可消除微观组织中的柱状晶,从而降低构筑方向和沉积方向上组织分布的差异性,实现了电弧增材超级双相不锈钢微观组织的均匀化。该方法还显著降低了材料硬度和拉伸性能的各向异性。A multi-layer single-pass wall arc additive experiment was conducted using ER2594 super duplex stainless steel wire with a diameter of 1.2 mm.BaF as an activator was introduced in a coated form during the additive process.The microstructure and mechanical properties of the additive components in both the build direction and deposition direction were analyzed.The results indicate that the addition of BaF as an activator during the arc additive eliminates columnar grains in the microstructure,thereby reducing the heterogeneity in the distribution of the microstructure along the build and deposition directions,which achieves a homogenization of the microstructure in the arc-additive super duplex stainless steel.The method also significantly reduces the anisotropy in material hardness and tensile properties.

关 键 词：超级双相不锈钢 BaF活性剂 各向异性 

分 类 号：TG455[金属学及工艺—焊接]