电焊机2025，Vol.55Issue(10)：66-76,11.DOI:10.7512/j.issn.1001-2303.2025.10.08
CMT电弧增材制备交叠层状异质材料的微观结构和机械性能
Microstructure and Mechanical Properties of Overlapping Layered Het-erostructured Materials Fabricated by CMT Additive Manufacturing
摘要
Abstract
Heterogeneous materials additive manufacturing represents a cutting-edge direction in the additive manufacturing field.Its core significance lies in overcoming the performance limitations of single materials and achieving comprehensive properties unattainable with traditional materials through spatially integrated structural functional design.In this study,utiliz-ing cold metal transfer wire arc additive manufacturing(CMT-WAAM)technology,samples of high-strength steel(HSS),low-carbon steel(LCS),and overlapping layered heterogeneous(OLH)were fabricated.Macroscopic and microscopic ex-aminations revealed no significant defects.In the OLH samples,the HSS regions developed predominantly ferrite,while the LCS regions formed martensite.The HSS zones showed comparable hardness(340.7 HV)to monolithic HSS(326.0 HV).In contrast,the LCS zones exhibited a 143.8%increase in hardness(245.9 HV)compared to monolithic LCS(171.1 HV).The OLH samples combined HSS-grade tensile strength with LCS-level ductility.关键词
异质金属/高强钢/低碳钢/CMT-WAAMKey words
heterogeneous materials/high-strength steel/low-carbon steel/CMT-WAAM分类
矿业与冶金引用本文复制引用
张琪,王晓丽,周子博,肖楠,丁红瑜,胡庆贤..CMT电弧增材制备交叠层状异质材料的微观结构和机械性能[J].电焊机,2025,55(10):66-76,11.基金项目
江苏省研究生科研创新项目(KYCX24_4122) （KYCX24_4122）
