冀宣名,曾梦婷,胡爽

• 1:贵州大学材料与冶金学院

摘要(Abstract)：

对固溶态Ti-B20合金进行70%压下量的冷轧变形，然后在800℃下进行不同时间的退火处理。采用电子背散射衍射(EBSD)技术和X射线衍射(XRD)研究了Ti-B20合金冷轧板材在退火过程中的静态再结晶行为和力学性能演变。结果表明：在退火过程中，合金的再结晶晶粒优先在晶界处和变形带处形核，导致退火初期组织不均匀；随退火时间的延长，晶粒逐渐等轴化，几何必要位错(GND)密度逐渐减小并趋于稳定，抗拉强度逐渐降低，而伸长率逐渐增加；在退火30 min后，Ti-B20合金冷轧板材的抗拉强度和伸长率分别为828 MPa和23.9%。合金再结晶体积分数与退火时间之间的关系可用Johnson-Mehl-Avrami-Kolmogorov(JAMK)方程来描述(X_(800)=1-exp(-0.26×t~(0.74)))。

关键词(KeyWords)： Ti-B20合金;再结晶;组织演变;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51974097,52161010);; 贵州省科技支撑计划(2022-050);; 贵州大学培育项目(2020-21)

作者(Author): 冀宣名,曾梦婷,胡爽

DOI: 10.13289/j.issn.1009-6264.2023-0035

参考文献(References)：

• [1] Xu X,Dong L M,Zhang Z Q,et al.Hot deformation behavior and microstructural evolution of beta C titanium alloy in β phase field[J].Transactions of Nonferrous Metals Society of China,2016,26(11):2874-2882.
• [2] 李毅，赵永庆，曾卫东.航空钛合金的应用及发展趋势[J].材料导报，2020,34(S1):280-282.LI Yi,ZHAO Yong-qing,ZENG Wei-dong.Application and development of aerial titanium alloys[J].Materials Reports,2020,34(S1):280-282.
• [3] Hu Z S,Yi D Q,Liu H Q,et al.New type of macrozone in a near-β titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe[J].Materials Letters,2019,238:6-9.
• [4] Chalapathi D,Sivaprasad P V,Kanjarla A K.Role of deformation twinning and second phase on the texture evolution in a duplex stainless steel during cold rolling:Experimental and modelling study[J].Materials Science and Engineering A,2020,780:139155.
• [5] 张旻，帅美荣，李海斌，等.热处理对不同形变工艺钛合金棒材显微组织与性能的影响[J].材料热处理学报，2022,43(3):35-42.ZHANG Min,SHUAI Mei-rong,LI Hai-bin,et al.Effect of heat treatment on microstructure and properties of titanium alloy bars prepared by different deformation processes[J].Transactions of Materials and Heat Treatment,2022,43(3):35-42.
• [6] Chen Y C,Wang S W,Lin J H,et al.Effect of cold rolling on structure and tensile properties of cast Ti-7.5Mo alloy[J].Materials Science and Engineering A,2015,631:52-66.
• [7] Xu T W,Li J S,Zhang S S,et al.Cold deformation behavior of the Ti-15Mo-3Al-2.7Nb-0.2Si alloy and its effect on alpha precipitation and tensile properties in aging treatment[J].Journal of Alloys and Compounds,2016,682:404-411.
• [8] Lan C B,Wu Y,Guo L L,et al.Microstructure,texture evolution and mechanical properties of cold rolled Ti-32.5Nb-6.8Zr-2.7Sn biomedical beta titanium alloy[J].Journal of Materials Science and Technology,2018,34:788-792.
• [9] Huo X D,Mao X P,Lv S X,et al.Effect of annealing temperature on recrystallization behavior of cold rolled Ti-microalloyed steel[J].Journal of Iron and Steel Research International,2013,20(9):105-110.
• [10] Dai S,Wang Y,Chen F.Effects of annealing on the microstructures and mechanical properties of biomedical cold-rolled Ti-Nb-Zr-Mo-Sn alloy[J].Materials Characterization,2015,104:16-22.
• [11] Ozan S,Lin J X,Zhang Y W,et al.Cold rolling deformation and annealing behavior of a β-type Ti-34Nb-25Zr titanium alloy for biomedical applications[J].Journal of Materials Research and Technology,2020,9(2):2308-2318.
• [12] 葛鹏，赵永庆，周廉.一种新型高强度亚稳β钛合金Ti-B20[J].稀有金属材料与工程，2005(5):790-794.GE Peng,ZHAO Yong-qing,ZHOU Lian.A new type metastable β titanium alloy Ti-B20 with high strengths[J].Rare Metal Materials and Engineering,2005(5):790-794.
• [13] Ge P P,Xiang S,Tan Y B,et al.Studies on the β → α phase transition kinetics of Ti-3.5Al-5Mo-4V alloy under isothermal conditions by X-ray diffraction[J].Metals,2020,10(1):90.
• [14] Hu S,Xiang S,Tan Y B,et al.Synchronous enhancement of the strength and ductility in a metastable β-Ti alloy by a new refined α phase mechanism[J] Journal of Alloys and Compounds,2022,922:166227.
• [15] Ji X M,Ge P P,Xiang S,et al.Effects of double-ageing heat treatments on the microstructure and mechanical behaviour of a Ti-3.5Al-5Mo-4V alloy[J].Materials,2021,14(1):209.
• [16] 冀宣名，胡爽.时效处理对不同热轧Ti-3.5Al-5Mo-4V钛合金组织与性能的影响[J].材料热处理学报，2022,43(10):27-33.JI Xuan-ming,HU Shuang.Effect of heat treatment process on microstructure and mechanical properties of Hot-rolled Ti-3.5Al-5Mo-4V titanium alloy[J].Transactions of Materials and Heat Treatment,2022,43(10):27-33.
• [17] Du Z X,Ma Y,Liu F,et al.The influences of process annealing temperature on microstructure and mechanical properties of near β high strength titanium alloy sheet[J].Materials,2019,12(9):1478.
• [18] Tian X J,Zhang S Q,Wang H M.The influences of anneal temperature and cooling rate on microstructure and tensile properties of laser deposited Ti-4Al-1.5Mn titanium alloy[J].Journal of Alloys and Compounds,2014,608:95-101.
• [19] Zeng M T,Yang Y,Tan Y B,et al.Recrystallization behavior and texture evolution of cryo-rolled GH159 superalloy with an ultra-high strength[J].Materials Characterization,2023,197:112656.
• [20] Gupta A,Khatirkar R K,Dandekar T,et al.Recrystallization behavior of a cold rolled Ti-15V-3Sn-3Cr-3Al alloy[J].Journal of Materials Research,2019,34:3082-3092.
• [21] Mantri S A,Choudhuri D,Alam T,et al.Tuning the scale of alpha precipitates in beta-titanium alloys for achieving high strength[J].Scripta Materialia,2018,154:139-144.
• [22] Li T Y,Chen F R,Zhang Z H.Effect of welding speed on microstructure and mechanical properties of 7A52 aluminum alloy by friction stir welding[J].Journal of Netshape Forming Engineering,2015,7(5):72-76.
• [23] Furu T,Marthinsen K,Nes E.Modelling recrystallisation[J].Materials Science and Technology,1990,6(11):1093-1102.
• [24] Seo Y S,Chun Y B,Hwang S K.A 3D Monte-Carlo simulation study of recrystallization kinetics in Zr with hypothetical stored energy gradients[J].Computational Materials Science,2008,43(3):512-521.
• [25] Xu T,Li J,Zhang F,et al.Microstructure evolution during cold-deformation and aging response after annealing of TB8 titanium alloy[J].Rare Metal Materials and Engineering,2016,45(3):575-580.
• [26] Hu S,Tan Y B,Shi W,et al.Microstructure,texture evolution and mechanical behavior of Ti-3.5Al-5Mo-4V titanium alloy during hot rolling in a β field[J].Materials Today Communications,2022,31:103506.
• [27] Yu Y,Chen R,Li C L,et al.A study on microstructural evolution and detwinning behavior of Ti-3Al-2.5V cold-rolled tube during annealing[J].Materials Research Express,2020,7(9):096520.

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