李健,王资兴,王安东

• 1:江苏大学材料科学与工程学院
• 2:江苏集萃先进金属材料研究所有限公司

摘要(Abstract)：

利用光学显微镜、扫描电镜、电子背散射衍射技术、透射电镜、显微硬度仪和拉伸试验机等对GH4698合金在冷拉拔变形过程中的微观组织和性能进行研究，并分析了合金热处理后的再结晶形核机制。结果表明：在冷拉拔过程中，合金的硬度从表面到中心逐渐增加，并且随着变形量的增加，硬度分布逐渐均匀，这是应变分布和微观结构共同作用的结果；随变形量的增加，合金的拉伸强度得到提高，而塑性相应降低。晶粒取向由最初的随机分布逐渐转变为沿[001]-[111]方向排列；固溶温度对合金的再结晶行为有显著影响。当变形量为36.0%,并在1020℃保温1 h时，合金几乎完全再结晶；TEM和EBSD分析表明，应变影响合金的再结晶形核机制，合金的再结晶机制以晶界迁移形核为主，亚晶长大形核为辅。

关键词(KeyWords)： GH4698高温合金;冷拉拔;再结晶

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52175464)

作者(Author): 李健,王资兴,王安东

DOI: 10.13289/j.issn.1009-6264.2024-0154

参考文献(References)：

• [1] Zhang P,Hu C,Zhu Q,et al.Hot compression deformation and constitutive modeling of GH4698 alloy[J].Materials and Design,2015,65:1153-1160.
• [2] Yao Z H,Zhang M C,Dong J X.Stress rupture fracture model and microstructure evolution for waspaloy[J].Metallurgical and Materials Transactions A,2013,44:3084-3098.
• [3] 秦鹤勇，陈刚，沈文涛，等.GH4698合金高温低周疲劳性能分析[J].锻压装备与制造技术，2014,49(6):92-96.QIN He-yong,CHEN Gang,SHEN Wen-tao,et al.Analysis of high temperature low cycle fatigue properties for GH4698 alloy[J].Forging Equipment and Manufacturing Technology,2014,49(6):92-96.
• [4] Chen X M,Ning M T,Hu H W,et al.Characterization of hot deformation behavior and optimization of hot workability for GH4698 superalloy[J].Materials Characterization,2023,201:112916.
• [5] Chen R C,Xiao H F,Wang M,et al.Flow behavior and hot processing map of GH4698 for isothermal compression process[J].Processes,2019,7:491-503.
• [6] 张鹏，秦鹤勇，谢静，等.GH4698动态再结晶行为研究[J].钢铁研究学报，2011,23(S2):233-236.ZHANG Peng,QIN He-yong,XIE Jing,et al.Dynamic recrystallization behaviors of superalloy GH4698[J].Journal of Iron and Steel Research,2011,23(S2):233-236.
• [7] 李中豪，黄亮，班宜杰，等.GH4698合金热加工图及微观组织演化[J].塑性工程学报，2024,31(1):71-82.LI Zhong-hao,HUANG Liang,BAN Yi-jie,et al.Hot processing maps and microstructure evolution of GH4698 alloy[J].Journal of Plasticity Engineering,2024,31(1):71-82.
• [8] 林鹏，马党参，孙立国，等.热处理对热锻模材料GH4698组织和性能的影响[J].材料热处理学报，2021,42(3):94-103.LIN Peng,MA Dang-shen,SUN Li-guo,et al.Effect of heat treatment on microstructure and properties of hot forging die material GH4698[J].Transactions of Materials and Heat Treatment,2021,42(3):94-103.
• [9] 赵义瀚，彭建强，张小伍，等.固溶时间对GH4698合金组织与性能的影响[J].金属热处理，2016,41(8):56-59.ZHAO Yi-han,PENG Jian-qiang,ZHANG Xiao-wu,et al.Effect on solution holding time on microstructure and mechanical properties of GH4698 superalloy[J].Heat Treatment of Metals,2016,41(8):56-59.
• [10] 满蛟，丛涛，孙福民，等.GH4698合金的热处理[J].金属热处理，2014,39(11):114-116.MAN Jiao,CONG Tao,SUN Fu-min,et al.Heat treatment of GH4698 alloy[J].Heat Treatment of Metals,2014,39(11):114-116.
• [11] Li H Z,Liu X G,Wang S J,et al.An evaluation of optimized grain boundary character distribution in hot-worked GH4698 superalloy[J].Journal of Material Science,2023,58:1382-1402.
• [12] Li H Z,Liu X G,Zhang W W,et al.Microstructure evolution and dynamic recrystallization mechanism during thermal deformation of GH4698 superalloy[J].Journal of Material Science,2022,57:2969-2987.
• [13] Han Y Z,Zhu H C,Qu J L,et al.Flow stress and dynamic recrystallization behavior and modeling of GH4738 superalloy during hot compression[J].Journal of Materials Research and Technology,2023,26:4957-4974.
• [14] Zhang H B,Zhang K F,Zhou H P,et al.Effect of strain rate on microstructure evolution of a nickel-based superalloy during hot deformation[J].Materials and Design,2015,80:51-62.
• [15] Liu C H,Zhang H,Wang Q,et al.Thermal deformation behavior and microstructure evolution of GH141 superalloy during double-cone gradient compression[J].Intermetallics,2024,164:108116.
• [16] Qu J L,Xie X F,Bi Z N,et al.Hot deformation characteristics and dynamic recrystallization mechanism of GH4730 Ni-based superalloy[J].Journal of Alloys and Compounds,2019,785:918-924.
• [17] Wan Z P,Wang T,Sun Y,et al.Dynamic softening mechanisms of GH4720Li alloy during hot deformation[J].Acta Metallurgica Sinica,2019,55:213-222.
• [18] Yang J,Luo J,Li X Y,et al.Evolution mechanisms of recrystallized grains and twins during isothermal compression and subsequent solution treatment of GH4586 superalloy[J].Journal of Alloys and Compounds,2021,850:156732.
• [19] 阚志，邢宝富，丑英玉，等.冷拔工艺对高温合金组织性能的影响[J].钢铁研究学报，2011,23(S2):9-12.KAN Zhi,XIN Bao-fu,CHOU Ying-yu,et al.The effect of cold-drawing process on the structure and capability of superalloy[J].Journal of Iron and Steel Research,2011,23(S2):9-12.
• [20] 杨春雷，沈海军，王国栋，等.GH4169合金固溶及冷拉过程的微观组织演变行为[J].金属热处理，2023,48(10):231-238.YANG Chun-lei,SHEN Hai-jun,WANG Guo-dong,et al.Microstructure evolution behavior of GH4169 alloy during solution and cold drawing process[J].Heat Treatment of Metals,2023,48(10):231-238.
• [21] 马迪.冷拉GH4169合金组织演变及力学性能[D].兰州：兰州理工大学，2020.MA Di.Microstructure evolution and mechanical properties of cold drawn GH4169 alloy[D].Lanzhou:Lanzhou University of Technology,2020.
• [22] Lv Y T,Ding Y,Cui H Z,et al.Investigation of microscopic residual stress and its effects on stress corrosion behavior of NiAl bronze alloy using in situ neutron diffraction/EBSD/tensile corrosion experiment[J].Materials Characterization,2020,164:110351.
• [23] Yan J B,Gu Y F,Sun F,et al.Microstructural study in a Fe-Ni-base superalloy during creep-rupture at intermediate temperature[J].Materials Science and Engineering A,2015,639:15-20.
• [24] Zhang J M,Zhang Y,Xu K W.Dependence of stresses and strain energies on grain orientations in FCC metal films[J].Journal of Crystal Growth,2005,285:427-435.
• [25] Randle V.Twinning-related grain boundary engineering[J].Acta Materialia,2004,52:4067-4081.
• [26] Mahajan S,Pande C S,Imam M A,et al.Formation of annealing twins in f.c.c.crystal[J].Acta Materialia,1997,45:2633-2638.
• [27] Randle V.Mechanism of twinning-induced grain boundary engineering in low stacking-fault energy materials[J].Acta Materialia,1999,47:4187-4196.

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