| 308 | 4 | 267 |
| 下载次数 | 被引频次 | 阅读次数 |
为解决深腔薄壁结构制造成本高、周期长和难度大的问题，开展了TC4钛合金深腔薄壁结构蠕变时效/扩散连接复合工艺研究。开发了蠕变时效/扩散连接复合成形工艺和蠕变时效/扩散连接复合成形工艺模具，实现了深腔薄壁结构的精密成形。该模具结构解决了成形过程中的装配、连接和定位等一系列问题。在900℃、10 MPa、60 min的工艺条件下，一步完成了TC4钛合金的蠕变时效以及扩散连接成形。该工艺的材料利用率高达45%,同时能较好地控制深腔薄壁结构的尺寸精度，成形件主要区域精度维持在-0.05～0 mm以内。复合成形后的TC4钛合金抗拉强度仅降低了9.62%,仍具有优异的力学性能。
Abstract：The research on the creep aging/diffusion bonding combined process of deep cavity thin-walled structure of TC4 titanium alloy was carried out to solve the problems of high cost, long period and difficulty in the manufacture of deep cavity thin-wall structure. The creep aging/diffusion bonding combined process and its die were developed, and the precision forming of deep cavity thin-walled structure was realized. The die structure solves a series of problems such as assembly, linkage and positioning in the forming process. The creep aging and diffusion bonding of TC4 titanium alloy were completed at 900 ℃, 10 MPa and 60 min in one step. The material utilization rate of the process is up to 45%. At the same time, the size accuracy of the component was well controlled during the process, and the accuracy of the main area of the component is maintained within-0.05 to 0 mm. After the combined forming, the tensile strength of TC4 titanium alloy is only reduced by 9.62%, and still retains excellent mechanical properties.
[1] 张慧，刘国文.薄壁深腔零件的机械加工工艺探讨[J].工程建设与设计，2018,(2):158-159.ZHANG Hui,LIU Guowen.Discussion on mechanical processing technology of thinwall deep cavity parts[J].Construction & Design for Project,2018,(2):158-159.
[2] 苑世剑，刘伟，王国峰，等.轻合金复杂薄壁构件流体压力成形技术新进展[J].上海航天，2019,36(2):31-37.YUAN Shijian,LIU Wei,WANG Guofeng,et al.Advances in fluid pressure forming of complex light metal thin-walled components[J].Areospace Shanghai,2019,36(2):31-37.
[3] RED C.Composites in commercial aircraft jetengines[J].High Performance Composites,2008,16(5):48-53.
[4] 孙煜，刘强，黄峰，等.复合材料风扇叶片钛合金加强边胶接技术研究[J].复合材料科学与工程，2021,(3):78-81.SUN Yu,LIU Qiang,HUANG Feng,et al.Study on bonding technologu of titanium alloy trim/composite fan blade[J].Composites Science and Engineering,2021,(3):78-81.
[5] 梁春华.高性能航空发动机先进风扇和压气机叶片综述[J].航空发动机，2006,(3):48-52.LIANG Chunhua.Overview of advanced fan and compressor blade/vane in high performance aeroengine[J].Aeroengine,2006,(3):48-52.
[6] 黄张洪，曲恒磊，邓超，等.航空用钛及钛合金的发展及应用[J].材料导报，2011,25(1):102-107.HUANG Zhanghong,QU Henglei,DENG Chao,et al.Development and application of aerial titanium and Its alloys[J].Materials Reports,2011,25(1):102-107.
[7] BOYER R.Titanium for aerospace:Rationale andapplications[J].Advanced Performance Materials,1995,2(4):349-368.
[8] EZUGWU O,WANG Z.Titanium alloys and their machinability-A review[J].Journal of Materials Processing Technology,1997,68(3):262-274.
[9] FURUSHMA T.Superplastic forming of advanced metallic materials methods and application methods and applications[M].Cambridge:Woodhead Publishing Limited,2011.
[10] LU L,GUO K,SUN J,et al.Investigation on hot sizing process based on creep mechanism for laser cladded thin-walled titanium alloy components[J].Journal of Laser Applications,2019,31(4):042002.
[11] LI Y,RONG Q,SHI Z,et al.An accelerated springback compensation method for creep age forming[J].The International Journal of Advanced Manufacturing Technology,2019,102(1-4):121-134.
[12] DENG Y,SHENG G,XU C.Evaluation of the microstructure and mechanical properties of diffusion bonded joints of titanium to stainless steel with a pure silver interlayer[J].Materials & Design,2013,46:84-87.
[13] 黄钢华.钛合金超塑性成形/扩散连接的数值模拟及工艺研究[D].南京：南京航空航天大学，2009.HUANG Ganghua.Numerical simulation and technical study of superplastic forming and diffusion bonding for Ti alloy sheet[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2009.
[14] 周兆锋.TC4钛合金热应力校形工艺研究[D].南京：南京航空航天大学，2009.ZHOUZhaofeng.Research on hot sizing technology of TC4 titanium alloy[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2009.
[15] ZHANG C,LI H,LI M.Interaction mechanism between void and interface grain boundary in diffusion bonding[J].Science and Technology of Welding and Joining,2015,20(2):123-129.
基本信息:
中图分类号:TG146.23
引用信息:
[1]蒋一帆,熊炜,李铭,等.钛合金深腔薄壁结构蠕变时效/扩散连接复合工艺与质量评价[J].塑性工程学报,2023,30(12):106-112.
基金信息:
国家自然科学基金面上资助项目(51875350); 上海市优秀学术带头人计划项目(22XD1421600)
2023-12-27
2023-12-27
2023-12-27