马庆,魏科,唐海兵,董显娟

• 1:南昌航空大学航空制造工程学院

摘要(Abstract)：

对TA15钛合金进行了双道次热压缩实验,研究了该合金在变形温度910、940和970℃,应变速率0.01、0.1和1 s~(-1)及道次间隙保温时间600、1000、1400、1800和2200 s等不同变形参数下的软化行为,定量计算了相应的等轴α晶粒尺寸及其含量。结果表明:TA15钛合金在双道次热压缩过程中,较高的变形温度和较小的应变速率会促使变形过程中的流动应力减小;在道次间隙保温过程中,材料呈现出了静态软化现象,其静态软化率随着变形温度的升高、应变速率的增大及道次间隙保温时间的延长而增加,且受应变速率的影响程度最大;此外,从合金的微观组织中观察到等轴α相晶粒在道次间隙保温过程中得到了明显的细化,且细化程度与其静态软化呈正相关性。

关键词(KeyWords)： TA15钛合金;双道次热压缩;软化行为;等轴α晶粒尺寸

Abstract:

Keywords:

基金项目(Foundation): 南昌航空大学研究生创新专项资金项目(YC2020024);; 国家自然科学基金(52005241);; 江西省自然科学基金(20192BAB216023,20202BBEL53012)

作者(Author): 马庆,魏科,唐海兵,董显娟

DOI: 10.13289/j.issn.1009-6264.2021-0122

参考文献(References)：

• [1] Xiao H,Fan X G,Zhan M,et al.Flow stress correction for hot compression of titanium alloys considering temperature gradient induced heterogeneous deformation[J].Journal of Materials Processing Technology,2021,288:116868.
• [2] 杨合，孙志超，樊晓光，等.钛合金大型复杂构件等温局部加载β锻造组织控制研究进展[J].航空材料学报，2014(4):72-82.YANG He,SUN Zhi-chao,FAN Xiao-guan,et al.Advances in microstructure control during isothermal forming of Ti-Alloy large complex components by near-β local forging[J].Journal of Aeronautical Materials,2014(4):72-82.
• [3] Wei K,Ma Q,Wang G C,et al.Exploration of the material transfer effect in local loading forming of ultra-large-size integrated component with multi-rib[J].International Journal of Advanced Manufacturing Technology,2020,108(5/6):1413-1427.
• [4] Fan X G,Yang H,Gao P F.Through-process macro-micro finite element modeling of local loading forming of large-scale complex titanium alloy component for microstructure prediction[J].Journal of Materials Processing Technology,2014,214(2):253-266.
• [5] Bo G W,Jiang F L,Su H G,et al.Static softening behavior and modeling of an Al-Cu-Mg-Zr alloy with various pre-precipitation microstructures during multistage hot deformation[J].Materials Science and Engineering A,2020,778:139094.
• [6] 张琦飞，王爱琴，谢敬佩，等.纯钼双道次热变形行为[J].材料热处理学报，2019,40(10):65-71.ZHANG Qi-fei,WANG Ai-qin,XIE Jing-pei,et al.Double-pass hot deformation behavior of pure molybdenum[J].Transactions of Materials and Heat Treatment,2019,40(10):65-71.
• [7] 刘新彬，吴光亮，周超洋，等.50Cr5MoV轧辊钢的静态再结晶行为[J].材料热处理学报，2016,37(5):204-209.LIU Xin-bin,WU Guan-liang,ZHOU Chao-yang,et al.Static recrystallization behaviors of 50Cr5MoV roll steel[J].Transactions of Materials and Heat Treatment,2016,37(5):204-209.
• [8] Hu Z,Zhou X Y,Nie X A,et al.Finer subgrain microstructure induced by multi-pass compression in α+β phase region in a near-b Ti-5Al-5Mo-5V-1Cr-1Fe alloy[J].Journal of Alloys and Compounds,2019,788:136-147.
• [9] 胡亚美，黄海广，郑必举，等.Ti-4Al-2.5V-1.5Fe合金多道次热变形行为及微观组织演变[J].塑性工程学报，2020,27(9):132-139.HU Ya-mei,HUANG Hai-guang,ZHENG Bi-ju,et al.Multi-pass hot deformation behavior and microstructure evolution of Ti-4Al-2.5V-1.5Fe alloy[J].Journal of Plasticity Engineering,2020,27(9):132-139.
• [10] 郜阳，孙志超，杨合.TA15钛合金等温近β变形行为及微观组织演化[J].稀有金属材料与工程，2013,5 (17):951-956.GAO Yang,SUN Zhi-chao,YANG He.Deformation behavior and microstructure evolution of TA15 titanium alloy after isothermal near β deformation[J].Rare Metal Materials and Engineering,2013,5(17):951-956.
• [11] 李萍，薛克敏，姚彭彭，等.热变形TA15钛合金的显微组织和室温力学性能[J].稀有金属材料与工程，2016,6:1495-1499.LI Ping,XUE Ke-min,YAO Peng-peng,et al.Microstructure and mechanical properties of hot deformed TA15 titanium alloy at room temperature[J].Rare Metal Materials and Engineering,2016,6:1495-1499.
• [12] Sun Z C,Yang H.Microstructure and mechanical properties of TA15 titanium alloy under multi-step local loading forming[J].Materials Science and Engineering A,2009,523(1/2):184-192.
• [13] Lei J,Zhu W G,Chen L,et al.Deformation behavior and microstructural evolution during the hot compression of Ti-5Al4Zr8Mo7V alloy[J].Materials Today Communications,2020,23:100873.
• [14] Zhao J,Wang K H,Huang K.Recrystallization behavior during hot tensile deformation of TA15 titanium alloy sheet with substantial prior deformed substructures[J].Materials Characterization,2019,151:429-435.
• [15] 王涛，万志鹏，孙宇镍，等.镍基变形高温合金动态软化行为与组织演变规律研究[J].金属学报，2018,54(1):83-92.WANG Tao,WAN Zhi-peng,SUN Yu-nie,et al.Dynamic softening behavior and microstructure evolution of Nickel base superalloy[J].Acta Metallurgica Sinica,2018,54(1):83-92.
• [16] 谢鑫，孙前江，彭嘉豪，等.TC21钛合金热变形行为[J].中国有色金属学报，2020,30(9):2048-2058.XIE Xin,SUN Qian-jiang,PENG Jia-hao,et al.Hot deformation behavior of TC21 titanium alloy[J].The Chinese Journal of Nonferrous Metals,2020,30(9):2018-2058.
• [17] 吕胡缘，胡励，时来鑫，等.基于元胞自动机的金属静态再结晶行为研究进展[J].材料热处理学报，2021,42(2):1-10.Lü Hu-yuan,HU Li,SHI Lai-xin,et al.Research progress of static recrystallization behavior of metals based on cellular automata[J].Transactions of Materials and Heat Treatment,2021,42(2):1-10.
• [18] 赵立华，张艳姝，吴桂芳.GH4169高温合金的静态再结晶动力学[J].材料热处理学报，2015,36(5):217-222.ZHAO Li-hua,ZHANG Yan-shu,WU Gui-fang.Static recrystallization kinetics of GH4169 superalloy[J].Transactions of Materials and Heat Treatment,2015,36(5):217-222.

文章评论(Comment)：