张少平,郭会明,赵子博,吴晨,田伟,钟燕,徐建伟,曾卫东

• 1:中国航发四川燃气涡轮研究院
• 2:中国科学院金属研究所
• 3:西北工业大学材料学院

摘要(Abstract)：

研究了高温热暴露对Ti60钛合金室温旋转弯曲高周疲劳性能的影响，通过分析试样的表面特征和内部组织，阐明了疲劳性能变化的原因。结果表明，600℃×100 h热暴露后合金的室温强度升高、塑性下降，室温旋转弯曲高周疲劳强度由470 MPa提升至543.3 MPa。疲劳性能的变化是由表面特征和内部组织变化共同引起的，热暴露导致试样表面产生由TiO_2及Al_2O_3组成的氧化膜，表面粗糙度增加、质量变差，对疲劳性能产生不利影响；同时，热暴露致使合金中α_2相和硅化物的析出数量增加，且尺寸增加，析出相的变化使得合金强度增加，并进一步提升疲劳强度。综合两方面作用，析出相对旋转弯曲高周疲劳强度的提升强于表面粗糙度增加所产生的不利影响，是疲劳性能提高的主要因素。

关键词(KeyWords)： Ti60钛合金;热暴露;高周疲劳性能;析出相;表面特征

Abstract:

Keywords:

基金项目(Foundation): “两机”专项基础研究(J2019-VI-0005-0119)

作者(Author): 张少平,郭会明,赵子博,吴晨,田伟,钟燕,徐建伟,曾卫东

DOI: 10.13289/j.issn.1009-6264.2023-0452

参考文献(References)：

• [1] 王清江，刘建荣，杨锐.高温钛合金的现状与前景[J].航空材料学报，2014,34(4):1-26.WANG Qing-jiang,LIU Jian-rong,YANG Rui.High temperature titanium alloys:Status and perspective[J].Journal of Aeronautical Materials,2014,34(4):1-26.
• [2] 付艳艳，宋月清，惠松骁，等.航空用钛合金的研究与应用进展[J].稀有金属，2006,12:850-856.FU Yan-yan,SONG Yue-qing,HUI Song-xiao,et al.Research and application of typical aerospace titanium alloys[J].Chinese Journal of Rare Metals,2006,12:850-856.
• [3] 蔡建明，李臻熙，马济民，等.航空发动机用600 ℃高温钛合金的研究与发展[J].材料导报，2005,19(1):50-53.CAI Jian-ming,LI Zhen-xi,MA Ji-min,et al.Research and development of 600 ℃ high temperature titanium alloys for aeroengine[J].Materials Review,2005,19(1):50-53.
• [4] 马陶然，方艳丽，王华明.激光沉积Ti60A高温钛合金显微组织及固态相变[J].材料热处理学报，2012,33(10):101-106.MA Tao-ran,FANG Yan-li,WANG Hua-ming.Microstructure and phase transformations of laser deposited high temperature titanium alloy Ti60A[J].Transactions of Materials and Heat Treatment,2012,33(10):101-106.
• [5] 王彬，张述泉，王华明.激光熔化沉积高温钛合金Ti60快速凝固组织[J].材料热处理学报，2008,29(6):86-92.WANG Bin,ZHANG Shu-quan,WANG Hua-ming.Rapidly solidified microstructure of Ti60alloy produced by laser rapid forming process[J].Transactions of Materials and Heat Treatment,2008,29(6):86-92.
• [6] 陈秉刚，李渭清，田永强，等.锻造温度对Ti60钛合金大规格棒材组织及性能的影响[J].世界有色金属，2016,10:45-47.CHEN Bing-gang,LI Wei-qing,TIAN Yong-qiang,et al.Effect of cold forging on microstructure of Ti60 titanium alloy large size bar[J].World Nonferrous Metal,2016,10:45-47.
• [7] 贾蔚菊，曾卫东，刘建荣，等.Ti60高温钛合金氧化行为研究[J].稀有金属材料与工程，2010,39(5):781-789.JIA Wei-ju,ZENG Wei-dong,LIU Jian-rong,et al.Oxidation behavior of near α-titanium alloy Ti60[J].Rare Metal Materials and Engineering,2010,39(5):781-789.
• [8] 王天祥，鲁世强，王克鲁，等.Ti60钛合金的热变形行为及加工工艺参数优化[J].稀有金属材料与工程，2020,49(10):3552-3561.WANG Tian-xiang,LU Shi-qiang,WANG Ke-lu,et al.Hot deformation behavior and processing parameter optimization of Ti60 alloy[J].Rare Metal Materials and Engineering,2020,49(10):3552-3561.
• [9] 孙昊，刘征，赵子博，等.热处理工艺对Ti60钛合金持久性能的影响[J].钛工业进展，2020,37(1):22-26.SUN Hao,LIU Zheng,ZHAO Zi-bo,et al.Effect of heat treatment on rupture property of Ti60 alloy[J].Titanium Industry Progress,2020,37(1):22-26.
• [10] 戎旭东，黄陆军，王博，等.热处理对魏氏组织Ti60钛合金组织与性能的影响[J].材料热处理学报，2015,36(10):39-45.RONG Xu-dong,HUANG Lu-jun,WANG Bo,et al.Effects of heat treatment on microstructure and mechanical properties of Ti60 alloy with Widmansttten microstructure[J].Transactions of Materials and Heat Treatment,2015,36(10):39-45.
• [11] Popov A,Rossina N,Popova M.The effect of alloying on the ordering processes in near-alpha titanium alloys[J].Materials Science and Engineering A,2013,564:284-287.
• [12] Ebrahimi A R,Zarei F,Khosroshahi R A.Effect of thermal oxidation process on fatigue behavior of Ti-4Al-2V alloy[J].Surface and Coatings Technology,2008,203(3/4):199-203.
• [13] Huang Z W,Sun C.On the role of thermal exposure on the stress controlled fatigue behaviour of a high strength titanium-aluminum alloy[J].Materials Science and Engineering A,2014,615:29-41.
• [14] Leyens C,Peters M,Kaysser W A.Influence of microstructure on oxidation behaviour of near-α titanium alloys[J].Materials Science and Technology,1996,12(3):213-218.
• [15] Jia W J.Zeng W D,Liu J.Influence of thermal exposure on the tensile properties and microstructures of Ti60 titanium alloy[J].Materials Science and Engineering A,2011,530:511-518.
• [16] Zhang X D,Wiezorek J M K,Baeslack W A,et al.Precipitation of ordered α2 phase in Ti-6-22-22 alloy[J].Acta Materialia,1998,46(13):4485-4495.
• [17] Huang A J,Li G P,Hao Y L,et al.Acicular α2 precipitation induced by capillarity at α/β phase boundaries in Ti-14Al-2Zr-3Sn-3Mo-0.5Si titanium alloy[J].Acta Materialia,2003,51(16):4939-4952.
• [18] Zhang J,Li D.Preferred precipitation of ordered α2 phase at dislocations and boundaries in near-α titanium alloys[J].Materials Science and Engineering A,2003,341(1):229-235.
• [19] Flower H M,Swann P R,West D R F.Silicide precipitation in the Ti-Zr-Al-Si system[J].Metallurgical and Materials Transactions B,1971,2(12):3289-3297.
• [20] Ramachandra C,Singh V.Silicide precipitation in alloy Ti-6AI-5Zr-0.5Mo-0.25Si[J].Metallurgical and Materials Transactions A,1982,13(5):771-775.
• [21] Dong J M,Li J R,Han M.Effects of check corrosion on high cycle fatigue properties of nickel-base single crystal superalloy[J].Journal of Materials Engineering,2020,48(1):77-83.
• [22] Xin S W,Zhao Y Q.Research on thermal stability of Ti40 alloy at 550 ℃[J].Materials Science and Engineering A,2008,623:367-389.
• [23] Radecka A,Coakley J,Vorontsov V A,et al.Precipitation of the ordered α2 phase in a near-α titanium alloy[J].Scripta Materialia,2016,117:81-85.
• [24] Lian Q H,Zhang C J,Feng H,et al.Enhanced mechanical properties of a near-α titanium alloy by tailoring the silicide precipitation behavior through severe plastic deformation[J].Materials Science and Engineering A,2023,880:145356.
• [25] Zhao D,Fan J K,Zhang Z X,et al.Influence of α+β solution treatments on Ti65 ultrathin sheets:Silicide precipitation,mechanical behaviour and novel ■ twinning system[J].Transactions of Nonferrous Metals Society of China,2023,33(4):1098-1113.

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