电弧增材再制造低碳钢疲劳性能研究  

Research on Fatigue Performance of Low Carbon Steel by Wire and Arc Additive Remanufacturing

作　　者：冯晓慧 高飞[2,3] 赵阳 关雪飞[5] 何晶靖 林京[2] FENG Xiaohui;GAO Fei;ZHAO Yang;GUAN Xuefei;HE Jingjing;LIN Jing(Aerospace Science and Industry Defense Technology Research and Test Center,Beijing 100854;Science&Technology on Reliability&Environmental Engineering Laboratory,Beihang University,Beijing 100191;Ningbo Institute of Technology,Beihang University,Ningbo 315800;National Key Laboratory for Remanufacturing,Beijing 100072;Graduate School of China Academy of Engineering Physics,Beijing 100193)

机构地区：[1]航天科工防御技术研究试验中心,北京100854 [2]北京航空航天大学可靠性与环境工程技术(国防科技)重点实验室,北京100191 [3]北京航空航天大学宁波创新研究院,宁波315800 [4]装备再制造技术国防科技重点实验室,北京100072 [5]中国工程物理研究院研究生院,北京100193

出　　处：《机械工程学报》2023年第14期151-158,168,共9页Journal of Mechanical Engineering

基　　金：重点实验室基金资助项目(JCKY61420052015,12700002020114006)。

摘　　要：以增材制造为核心的再制造技术有望在航空航天、武器装备等领域成为替代人工或减材再制造的核心再制造技术。增材制造采用逐层熔融沉积成型,其疲劳性能与常规制造材料相比通常具有较大差异。成型过程中移动热源反复熔覆,形成复杂热历史,造成材料微结构的复杂演变。因此,增材制造材料疲劳裂纹扩展性能也存在一定的各向异性。以电弧增材再制造低碳钢为对象,针对裂纹扩展性能,研究电弧增材制造与常规热轧制造材料之间,以及电弧增材制造材料不同取向之间疲劳裂纹扩展速率的差异。分析造成疲劳裂纹扩展性能差异的微观层面机理,为电弧增材再制造材料在关键领域应用提供支持。Remanufacturing technology centered on additive manufacturing has drawn a lot of attention in the remanufacturing community for aerospace and military industry.However,due to the characteristics of layer-by-layer fused deposition,the fatigue performance of additive manufacturing materials is quite different compared with the base material.During the molding process,the moving heat source is repeatedly cladded,forming a complex thermal history and causing complex microstructure.The fatigue behavior of a low-carbon steel component fabricated by wire and arc additive remanufacturing is studied.The features of microstructure,texture,and fracture mode of the interlayer area and deposited area are also investigated to reveal the mechanism of anisotropy.Additionally,the difference of fatigue performance between the wire and arc additive manufactured and conventional manufactured specimens is studied.

关 键 词：电弧增材再制造 疲劳性能 微观结构 

分 类 号：V250[一般工业技术—材料科学与工程] TG444[航空宇航科学与技术—航空宇航制造工程]