搅拌摩擦沉积增材技术研究进展  

Research progress in additive friction stir deposition

作　　者：陈刚[1] 武凯[1] 孙宇[1] 贾贺鹏 朱志雄 胡峰峰 CHEN Gang;WU Kai;SUN Yu;JIA Hepeng;ZHU Zhixiong;HU Fengfeng(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Aerospace Engineering Equipment(Suzhou)Co.,Ltd.,Suzhou 215200,Jiangsu,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]航天工程装备(苏州)有限公司,江苏苏州215200

出　　处：《材料工程》2023年第1期52-63,共12页Journal of Materials Engineering

基　　金：江苏省科技成果转化专项项目(BA2019029);苏州市重点研发产业化重点项目(SGC201914)。

摘　　要：搅拌摩擦沉积增材(additive friction stir deposition,AFSD)技术是一种新兴固相增材制造技术,采用金属棒材、粉材、丝材为增材材料,增材过程中依靠增材材料与板材摩擦产生摩擦热以及材料剧烈变形产生的塑性变形热形成黏塑性沉积层,沉积层逐层堆积形成三维实体结构件;基于其固相特征,具有熔覆增材技术不可比拟的优势,目前已成为增材制造领域的研究热点。本文从设备研制、微观组织演变、材料流动特性、力学性能变化四个方面综述了AFSD技术最新国内外研究进展;分析了该技术应用于工程实际的可行性,展望了在增材制造、材料修复、零件加固、制造金属涂层领域的应用前景;最后指出了产热机制、材料流动特性、辅助优化工艺、智能化设备研制等为未来的研究方向。The additive friction stir deposition(AFSD)technology is a new solid-state additive manufacturing technology.The metal bars,powders,and wires are used as feedstock.During the additive process,the friction heat generated by the friction between feedstock and the plate and the plastic deformation heat generated by the severe deformation of feedstock form a viscoplastic deposition layer.The deposition layer is stacked layer by layer to form three-dimensional parts.Because of its solid phase characteristics,it has many advantages over fused-based metal additive technologies and has become a research hotspot in the field of additive manufacturing.In this paper,the latest research progress of AFSD technology at home and abroad was reviewed from four aspects of equipment development,microstructure evolution,material flow characteristics and mechanical properties change.The feasibility of the application of this technology in engineering practice was analyzed and the application prospect in the field of metal coating reinforcement for material repair parts of additive manufacturing was forecasted.Finally,it was pointed out that the heat generation mechanism,material flow characteristics,auxiliary optimization process,and intelligent equipment development are the future research directions.

关 键 词：搅拌摩擦沉积增材 微观组织演变 材料流动特性 力学性能变化 

分 类 号：TG44[金属学及工艺—焊接]