锻压技术

GH2907高温合金热加工工艺窗口的建立与验证

英文标题：Establishment and verification on hot working process window for superalloy GH2907

单位：西安建筑科技大学西北工业大学贵州安大航空锻造有限责任公司沈阳黎明航空发动机（集团）有限责任公司

分类号：TG316.3

出版年,卷(期):页码：2022,47(8):224-234

摘要：

为了确定GH2907高温合金的最佳等温热变形工艺参数，采用近等温热压缩实验及热变形后固溶实验分析了合金在不同热力学参数（温度及应变）下的组织演变规律，建立了GH2907高温合金的热加工工艺窗口（再结晶晶粒的百分比窗口和晶粒尺寸极差窗口）。结果表明：当变形温度越高、等效应变越大时，再结晶晶粒的百分比越大，晶粒尺寸极差先增大后减小；锻后随着固溶温度的升高，组织中的晶粒逐渐均匀化，1040 ℃×1 h固溶处理后，在相同变形温度时，不同等效应变处的组织呈现出匀晶状态。根据热加工工艺窗口得知，选择高温小变形（变形温度为1020 ℃、等效应变为0.4和980 ℃×1 h固溶处理）的工艺参数可获得较为均匀的组织。通过模拟环轧成形及环轧实验生产出的环件中各位置的组织较均匀，验证了热加工工艺窗口的准确性。

In order to determine the optimal isothermal thermal deformation process parameters for superalloy GH2907, the microstructure evolution laws of the alloy under different thermodynamic parameters (temperature and strain) were analyzed by the near isothermal thermal compression experiment and solution experiment after hot deformation, and the hot working process window was established (recrystallized grains percentage window and grain size range window). The results show that with the increasing of deformation temperature and equivalent strain, the percentage of recrystallized grains increases, and the range of grain size increases first and decreases afterwards. With the increasing of solution temperature after forging, the grains in the microstructure are gradually homogeneous, and after the solution treatment of 1040 ℃ × 1 h, the microstructure at different equivalent strains presents a homogeneous state at the same deformation temperature. According to the hot working process window, the relatively uniform microstructure can be obtained by selecting the process parameters of high temperature and small deformation (the deformation temperature of 1020 ℃, the equivalent strain of 0.4 and the solution treatment of 980 ℃×1 h). The structure in each position of the ring part produced by simulating the ring rolling and the ring rolling experiments shows a uniform state, which verifies the accuracy of the hot working process window.

基金项目：

国家自然科学基金资助项目（51504195）；陕西省重点研发项目(2017ZDXM-GY-027)

作者简介：陈益哲（1992-），男，硕士，E-mail：957698190@qq.com

参考文献：

[1] 《中国航空材料手册》编辑委员会. 中国航空材料手册[M].2版. 北京: 中国标准出版社, 2002.

Editorial Board of China Aviation Materials Manual. China Aviation Materials Manual [M].2nd Edition. Beijing: China Standard Press, 2002.

[2]刘瑛, 邓波, 陈淦生, 等. 析出相在 GH907 低膨胀合金中的作用[J]. 材料工程, 1997，(11):27-30.

Liu Y, Deng B, Chen G S, et al. Effects of precipitates in the low expansion superalloy GH907[J]. Journal of Materials Engineering, 1997，(11): 27-30.

[3]刘瑛, 邓波, 陈淦生, 等. 硅在GH907低膨胀高温合金中的分布及对析出相的影响[J].钢铁, 1997，(6): 56-60.

Liu Y, Deng B, Chen G S, et al. Distribution and effect on precipitation of Si in GH907 superalloy[J]. Iron and Steel, 1997，(6): 56-60.

[4]王荣明, 李春志, 于建彤, 等. 低膨胀高温合金GH907的显微组织研究[J]. 航空材料学报, 1995,（4）:1-7.

Wang R M, Li C Z, Yu J T, et al. Investigation on microstructure of a low expansion superalloy[J]. Journal of Aeronautical Materials, 1995,（4）：1-7.

[5]王荣明, 李春志, 颜鸣皋. 稀土影响高温合金GH907性能的显微机理研究[J]. 材料工程, 2001，(7): 25-28.

Wang R M, Li C Z, Yan M G. Micro-mechanism study on the properties affects in a low expansion superalloy GH907 with addition of RE elements[J]. Journal of Materials Engineering, 2001，(7): 25-28.

[6]唐晓辉, 杨树林, 藏德昌, 等. GH907合金自由锻环形件混晶组织的分析及改进[J]. 热加工工艺, 2015, 44(7): 141-144.

Tang X H, Yang S L, Zang D C, et al. Analysis and improvement of mixed crystal microstructure of GH907 alloy free forging ring parts[J]. Hot Working Technology, 2015, 44 (7): 141-144.

[7]邰清安，李晓光，国振兴，等．锻造工艺及热处理参数对GH738合金环形锻件组织均匀性的影响[J]. 精密成形工程， 2013，5 (6): 7-10．

Tai Q A, Li X G, Guo Z X, et al. Effects of forging technology and parameters of heating treatment on the microstructure uiformity of GH738 ring part[J]. Precision Forming Engineering，2013，5(6): 7-10.

[8]张华，张宗林. GH907合金环形锻件的热加工工艺参数[J]. 钢铁研究学报, 2003, 15(z1):413-419.

Zhang H，Zhang Z L. Heating process parameter of ring forging for alloy GH907[J]. Journal of Iron and Steel Research, 2003, 15(z1): 413-419.

[9]秦鹤勇, 崔灿, 王雪, 等. 优质高强GH2132合金的形变强化和热处理制度研究[J]. 钢铁研究学报, 2011, 23(S2): 44-47.

Qin H Y, Cui C, Wang X, et al. Investigation of working hardening and heat treatment of high quality and high strength GH2132 superalloy[J]. Journal of Iron and Steel Research, 2011, 23(S2): 44-47.

[10]刘永长, 张宏军, 郭倩颖, 等. Inconel 718变形高温合金热加工组织演变与发展趋势[J]. 金属学报, 2018, 54(11): 1653-1664.

Liu Y C, Zhang H J, Guo Q Y, et al. Microstructure evolution of Inconel 718 superalloy during hot working and its recent development tendency[J]. Acta Metallurgica Sinica, 2018, 54(11): 1653-1664.

[11]Chang K M, Liu X B. Effect of γ′ content on the mechanical behavior of the WASPALOY alloy system[J]. Materials Science and Engineering A, 2001, 308(1-2): 1-8.

[12]曲敬龙, 杜金辉, 毕中南, 等. 等温锻造工艺对GH4720Li合金盘锻件组织的影响[J]. 钢铁研究学报, 2012, 24(2): 49-53.

Qu J L, Du J H, Bi Z N, et al. Effect of isothermal forging on microstructure for superalloy GH4720Li disc[J]. Journal of Iron and Steel Research, 2012, 24(2): 49-53.

[13]姚志浩, 董建新, 张麦仓. GH738高温合金热变形过程显微组织控制与预测Ⅰ.组织演化模型的构建[J]. 金属学报, 2011, 47(12): 1581-1590.

Yao Z H, Dong J X, Zhang M C. Microstructure control and prediction of GH738 superalloy during hot deformation Ⅰ. Construction of microstructure evolution model[J]. Acta Metallurgica Sinica, 2011, 47(12): 1581-1590.

[14]姚志浩, 王秋雨, 张麦仓, 等. GH738高温合金热变形过程显微组织控制与预测Ⅱ.组织演化模型验证与应用[J]. 金属学报, 2011, 47(12): 1591-1599.

Yao Z H, Wang Q Y, Zhang M C, et al. Microstructure control and prediction of GH738 superalloy during hot deformation Ⅱ. Verification and application of microstructure evolution model[J]. Acta Metallurgica Sinica, 2011, 47(12): 1591-1599.

[15]张北江, 赵光普, 焦兰英, 等. 热加工工艺对GH4586合金微观组织的影响[J]. 金属学报, 2005，41(4): 351-356.

Zhang B J, Zhao G P, Jiao L Y, et al. Influence of hot working process on microstructures of superalloy GH4586 [J]. Acta Metallurgica Sinica, 2005，41(4): 351-356.

[16]吾志岗, 李德富. GH625镍基合金的高温压缩变形行为及组织演变[J]. 中国有色金属学报, 2010, 20(7): 1321-1327.

Wu Z G, Li D F. Hot compression deformation behaviors and microstructure evolution of GH625 Ni-based alloy[J]. The Chinese Journal of Nonferrous Metals, 2010, 20(7): 1321-1327.

[17]袁华, 李周, 张国庆, 等. 喷射成形GH738合金环形件组织和性能的研究[J].钢铁研究学报, 2011, 23(S2): 271-273.

Yuan H, Li Z, Zhang G Q, et al. The study of microstructures and properties of spray formed superalloy GH738 ring[J]. Journal of Iron and Steel Research, 2011, 23(S2): 271-273.

[18]刘东, 罗子健. GH4169合金热加工过程中的显微组织演化数学模型[J]. 中国有色金属学报, 2003，13(5): 1211-1218.

Liu D, Luo Z J. Mathematical model for microstructure evolution of GH4169 alloy during hot working process[J]. The Chinese Journal of Nonferrous Metals, 2003，13(5): 1211-1218.

服务与反馈：

【文章下载】【加入收藏】