金属学报  2005, Vol. 41 Issue (11): 1207-1214

论文 本期目录 | 过刊浏览 |

GH742合金热变形行为与微观组织演化

张北江; 赵光普; 胥国华; 冯 涤

钢铁研究总院高温材料研究所

Hot deformation behavior and micro-structure evolution of superalloy GH742

ZHANG Beijiang; ZHAO Guangpu; XU Guohua; FENG Di

High Temperature Materials Division; Central Iron and Steel Research Institute

张北江; 赵光普; 胥国华; 冯涤 . GH742合金热变形行为与微观组织演化[J]. 金属学报, 2005, 41(11): 1207-1214 .
, , , . Hot deformation behavior and micro-structure evolution of superalloy GH742[J]. Acta Metall Sin, 2005, 41(11): 1207-1214 .

摘要 参考文献 相关文章 Metrics 全文: PDF(1126 KB)   摘要: 在MTS热模拟实验机上采用等温压缩实验的方法研究了GH742合金热塑性变形行为, 获得了合金在温度为950-1150℃、应变速率为0.001-1 s-1的热加工变形条件范围内的流变应力数据, 并对合金变形过程中的组织演变过程进行了分析. 结果表明,当合金在1075℃以上的单相区内变形时具有低的流变应力, 合金的表观激活能接近晶界扩散激活能,变形行为受再结晶晶界迁移过程的控制, 易于获得充分动态再结晶组织. 在两相区内, GH742合金具有高的表观激活能, 随着变形温度的下降和应变速率的增大, 流变应力大幅度升高, 同时动态再结晶过程受到抑制.在单相区与两相区交界温度范围内, 流变应力出现台阶式突变, 同时表观激活能大幅度升高,由于应变诱导析出γ相抑制了再结晶晶界的迁移, 再结晶晶粒直径随变形量的增加而大幅度减小, 从而使微观组织得到有效的细化 关键词 ： 镍基高温合金,  热加工,  流变行为     Abstract：Hot deformation behavior of superalloy GH742 was studied by isothermal compression test conducted on MTS machine. Flow stress data at various temperatures from 950℃ to 1150℃ and strain rates from 0.001 s-1 to 1 s-1 were obtained, microstructure evolution during deformation under the above conditions was also investigated. The results show that when deformation was performed at single phase region above 1075℃, rather low flow stress is exhibited, the apparent activation energy approachs the activation energy of grain boundary diffusion, the deformation mechanism is controlled by grain growth rate and the fully recrystallized structures can be achieved. In two phase region, GH742 alloy presents considerably high activation energy, with decreasing temperature and increasing strain rate the flow stress increases swiftly, while the dynamic recrystallization was strongly prohibited. At transition temperature between single and two phase regions, a discontinuous change in flow stress was observed, and the apparent activation energy sharply increased, strain induced dynamically precipitated γ phase inhibits the migration of grain boundaries, the diameter of the recrystallized grain is drastically reduced with increase of plastic strain, and the microstructure was effectively refined. Key words： nickel base superalloy    hot working    flow behavior 收稿日期: 2005-06-30      ZTFLH:  TG111.7   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 张北江 赵光普 胥国华 冯涤 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2005/V41/I11/1207 [1] Long Z D, Zhuang J Y, Deng B, Zhong Z Y. Acta Metall Sin, 1999; 35: 1211 (龙正东,庄景云,邓波,仲增墉．金属学报,1999;35:1211) [2] Meyers M A, Benson D J, Vohringer O, Kad B K, Xue Q,Fu H H. Mater Sci Eng, 2002; A322: 194 [3] Semiatin S L, Weaver D S, Fagin P N, Glavicic M G. Metall Mater Trans, 2004; 35A: 679 [4] Hayes R W. Acta Metall, 1983; 31: 365 [5] Doherty R D, Hughes D A, Humphreys F J, Jonas J J.Mater Sci Eng, 1997; A238: 219 [6] Prasad Y, Seshacharyulu T. Int Mater Rev, 1998; 43: 243 [7] Shen G S, Semiatin S L, Shivpuri R. Metall Mater Trans,1995; 26A: 1795 [8] Verdier M, Brechet Y, Guyot P. Acta Mater, 1999; 47:127 [9] Sakai T, Ohashi M, Jonas J J. Acta Metall, 1988; 36: 1781 [10] Verdier M, Brechet Y, Guyot P. Acta Mater, 1999; 47:127 [11] Speer J G, Hasen S S. Metall Trans, 1989; 20A: 25 [12] Simmons J P, Wen Y, Shen C, Wang Y Z. Mater Sci Eng,2004; A365: 136 [13] Gourdet S, Montheillet F. Acta Mater, 2003; 51: 2685 [14] Song X Y, Markus R, Zhang J X. Acta Metall Sin, 2004; 40: 1009 (宋晓艳,Markus R,张久兴．金属学报,2004;40:1009) [15] McQueen H J, Ryan N D. Mater Sci Eng, 2002; A322: 43 [16] Weertman J. J Appl Phys, 1957; 28: 362 [17] Bruni C, Forcellese A, Gabrielli F. Mater Sci Technol,2002; 125: 242 [18] Siddall R J, Eggar J W. Mater Sci Technol, 1986; 2: 728 [19] Wahabi M E, Cabrera J M, Prado J M. Mater Sci Eng,2003; A343: 116 [20] Briottet L, Jonas J J, Monthellet F. Acta Mater, 1996;44:1665 [21] Gottstein G, Kocts U. Acta Metall, 1983; 31: 175 [22] Sakai T, Jonas J J. Acta Metall, 1984; 32: 189 [23] Crespo D, Pradell T, Clavaguera N. Mater Sci Eng, 1997;A238: 160 [24] Kazaryan A, Wang Y, Dregia S A, Patton B R. Acta Mater, 2002; 50: 2491 [25] Tian B, Wang Y, Zickler G A, Lind C, Paris O. Acta Mater, 2003; 51: 4149 [1] 郑亮, 张强, 李周, 张国庆. 增/降氧过程对高温合金粉末表面特性和合金性能的影响：粉末存储到脱气处理[J]. 金属学报, 2023, 59(9): 1265-1278. [2] 江河, 佴启亮, 徐超, 赵晓, 姚志浩, 董建新. 镍基高温合金疲劳裂纹急速扩展敏感温度及成因[J]. 金属学报, 2023, 59(9): 1190-1200. [3] 王磊, 刘梦雅, 刘杨, 宋秀, 孟凡强. 镍基高温合金表面冲击强化机制及应用研究进展[J]. 金属学报, 2023, 59(9): 1173-1189. [4] 穆亚航, 张雪, 陈梓名, 孙晓峰, 梁静静, 李金国, 周亦胄. 基于热力学计算与机器学习的增材制造镍基高温合金裂纹敏感性预测模型[J]. 金属学报, 2023, 59(8): 1075-1086. [5] 张禄, 余志伟, 张磊成, 江荣, 宋迎东. GH4169高温合金热机械疲劳循环损伤机理及数值模拟[J]. 金属学报, 2023, 59(7): 871-883. [6] 袁江淮, 王振玉, 马冠水, 周广学, 程晓英, 汪爱英. Cr2AlC涂层相结构演变对力学性能的影响[J]. 金属学报, 2023, 59(7): 961-968. [7] 刘来娣, 丁彪, 任维丽, 钟云波, 王晖, 王秋良. DZ445镍基高温合金高温长时间氧化形成的多层膜结构[J]. 金属学报, 2023, 59(3): 387-398. [8] 于少霞, 王麒, 邓想涛, 王昭东. GH3600镍基高温合金极薄带的制备及尺寸效应[J]. 金属学报, 2023, 59(10): 1365-1375. [9] 祝国梁, 孔德成, 周文哲, 贺戬, 董安平, 疏达, 孙宝德. 选区激光熔化 γ' 相强化镍基高温合金裂纹形成机理与抗裂纹设计研究进展[J]. 金属学报, 2023, 59(1): 16-30. [10] 倪珂, 杨银辉, 曹建春, 王刘行, 刘泽辉, 钱昊. 18.7Cr-1.0Ni-5.8Mn-0.2N节Ni型双相不锈钢的大变形热压缩软化行为[J]. 金属学报, 2021, 57(2): 224-236. [11] 朱玉平, 盛乃成, 谢君, 王振江, 荀淑玲, 于金江, 李金国, 杨林, 侯桂臣, 周亦胄, 孙晓峰. 高钨镍基高温合金K416B富W相的析出行为[J]. 金属学报, 2021, 57(2): 215-223. [12] 刘庆琦, 卢晔, 张翼飞, 范笑锋, 李瑞, 刘兴硕, 佟雪, 于鹏飞, 李工. Al19.3Co15Cr15Ni50.7高熵合金的热变形行为[J]. 金属学报, 2021, 57(10): 1299-1308. [13] 刘超, 姚志浩, 江河, 董建新. GH4720Li合金毫米级粗大晶粒热变形获得均匀等轴晶粒的可行性及工艺控制[J]. 金属学报, 2021, 57(10): 1309-1319. [14] 张瑞, 刘鹏, 崔传勇, 曲敬龙, 张北江, 杜金辉, 周亦胄, 孙晓峰. 国内航空发动机涡轮盘用铸锻难变形高温合金热加工研究现状与展望[J]. 金属学报, 2021, 57(10): 1215-1228. [15] 李天瑞, 刘国怀, 于少霞, 王文娟, 张风奕, 彭全义, 王昭东. 直接包套轧制铸态Ti-46Al-8Nb合金的组织特征及热变形机制[J]. 金属学报, 2020, 56(8): 1091-1102. Viewed Full text Abstract Cited   Shared      Discussed