引用本文:伊浩,黄如峰,曹华军,刘蒙霖,周进.基于CMT的钛合金电弧增材制造技术研究现状与展望∗[J].中国表面工程,2021,34(3):1~15
Yi Hao,Huang Rufeng,Cao Huajun,Liu Menglin,Zhou Jin.Research Progress and Prospects of CMT-based Wire Arc Additive Manufacturing Technology for Titanium Alloys[J].China Surface Engineering,2021,34(3):1~15
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基于CMT的钛合金电弧增材制造技术研究现状与展望∗
伊浩1,2, 黄如峰1,2, 曹华军1,2, 刘蒙霖1,2, 周进1,2
1.重庆大学机械与运载工程学院 重庆 400030;2.重庆大学机械传动国家重点实验室 重庆 400044
摘要:
钛合金高强度、高耐热的特性决定了其在航空航天、船舶制造等领域的广泛应用,但由于钛合金的难加工性,使得传统锻造+机加的方式模具损耗严重、制造周期长。 增材制造作为一种制造成本低、成形效率高的绿色化制造工艺,凭借其无需模具、直接成形的优势在钛合金制造领域受到国内外学者的广泛关注。 电弧增材制造技术相较于其他增材工艺(如激光增材制造、电子束增材制造等)沉积效率更高,不受零件尺寸的限制,在大型和超大型结构件的制造中具有突出优势,其中基于冷金属过渡(Cold metal transfer, CMT)的电弧增材制造技术由于沉积过程更稳定、热输入量更低,已逐渐成为钛合金增材制造领域的研究热点。 文中对基于冷金属过渡的钛合金电弧增材制造技术的研究现状进行综述,介绍钛合金打印件的微观组织和力学性能特征,总结分析了成形参数对打印件微观组织与力学性能的影响规律,并概述了形核条件调控、轧制和超声冲击等辅助技术对打印件微观组织与力学性能的影响机制,最后展望了钛合金 CMT 电弧增材制造的未来发展趋势。
关键词:  钛合金  冷金属过渡  电弧增材制造  微观组织  力学性能
DOI：10.11933/j.issn.1007-9289.20210408002
分类号:TG156;TB114
基金项目:国家自然科学基金(52005059)、中国博士后科学基金( 2020M673127)、重庆市自然科学基金( cstc2020jcyj-bshX0008)和中央高校基本科研业务费(2020CDJQY-A035)资助项目
Research Progress and Prospects of CMT-based Wire Arc Additive Manufacturing Technology for Titanium Alloys
Yi Hao1,2, Huang Rufeng1,2, Cao Huajun1,2, Liu Menglin1,2, Zhou Jin1,2
1.College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400030 , China;2.State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044 , China
Abstract:
Titanium alloys are widely used in aerospace, shipbuilding and some other fields due to their high strength and high heat resistance. However, traditional forging+machining methods are suffering from severe die loss and long manufacturing cycle because of the difficult machining of titanium alloys. Additive manufacturing, as a green manufacturing process with low manufacturing cost and high forming efficiency, has received wide attention from domestic and international scholars in the field of titanium alloy manufacturing with its advantages of direct forming without die. Compared with other additive manufacturing processes,such as laser additive manufacturing, electron beam additive manufacturing, etc. , wire arc additive manufacturing possesses higher deposition efficiency and is not limited by the dimensions of parts, and it has outstanding advantages in the manufacturing of large and ultra-large parts. Wire arc additive manufacturing based on cold metal transfer (CMT) has gradually become a research hotspot in the field of titanium alloy additive manufacturing because of its more stable deposition process and lower heat input. This paper reviews the current research on CMT-based wire arc additive manufacturing for titanium alloy. The microstructure and mechanical properties of titanium alloy printed parts are introduced, and the influence of forming parameters on the microstructure and mechanical properties of printed parts is summarized and analyzed. The influencing mechanism of assisted technologies, such as nucleation condition control, rolling and ultrasonic impact on the microstructure and mechanical properties of printed parts are summarized. Finally, the prospects of CMT-based wire arc additive manufacturing are proposed.
Key words:  titanium alloy  cold metal transfer  wire arc additive manufacturing  microstructure  mechanical properties
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