对击锤与液压机锻造GH4169盘件组织与性能分析  

Differences in Microstructure and Properties of GH4169 Discs Forged by Counter-blow Hammer and Hydraulic Press

作　　者：李昌永 黄钧崴 周涛 王建国[2] 秦卫东 谭志刚 刘东[2] 石永召 LI Chang-yong;HUANG Jun-wei;ZHOU Tao;WANG Jian-guo;QIN Wei-dong;TAN Zhi-gang;LIU Dong;SHI Yong-zhao(AECC Shenyang Liming Aero Engine Co.,Ltd.,Shenyang 110043,China;Department of Materials,Northwestern Poly-technical University,Xi'an 710072,China;AECC Shenyang Engine Research Institute,Shenyang 110043,China;Shaanxi Hongyuan Aviation Forging Company Ltd.,Shannxi Xianyang 713801,China)

机构地区：[1]中国航发沈阳黎明航空发动机有限责任公司,沈阳110043 [2]西北工业大学材料学院,西安710072 [3]中国航发沈阳发动机研究所,沈阳110043 [4]陕西宏远航空锻造有限责任公司,陕西咸阳713801

出　　处：《精密成形工程》2023年第1期182-189,共8页Journal of Netshape Forming Engineering

基　　金：国家自然科学基金(52101052);重庆市自然科学基金(cstc2020jcyj-msxmX0046)。

摘　　要：目的揭示在对击锤与液压机模锻工艺下盘件的组织与性能差异,为锻造工艺选择和指导生产实践提供理论依据。方法采用数值模拟方法,对GH4169涡轮盘在63TM对击锤和200MN等温锻压机上的成形过程进行对比分析,通过对不同工艺制备的GH4169合金经直接时效后进行组织形貌观察和力学性能测试,探究对击锤模锻与液压机等温模锻GH4169合金盘件的组织与性能差异。结果2种工艺下盘件的等效应变分布差异不大,但液压机成形盘件的温度比锤锻高,且温度分布的均匀性略优;对击锤模锻的GH4169合金内留存高密度位错,有效促进γ"相形核,沉淀强化相的增多使其具有更高的抗拉和屈服强度。结论与液压机锻造相比,锤锻GH4169合金盘件具有更好的综合性能。The work aims to study the differences in the organization and properties of discs forged by counter-blow hammer and hydraulic press,so as to provide theoretical foundation for selection of forging process and guidance of production.Numerical simulations were used to compare and analyze the forming process of GH4169 turbine discs on 63TM counter-blow hammer and 200MN isothermal forging press,and the differences in the organization and properties of GH4169 alloy discs prepared by different processes were investigated by observing the tissue morphology and mechanical properties after direct aging of GH4169 alloy prepared by different processes and by isothermal die forging GH4169 discs on counter-blow hammer and hydraulic press.It was found that the differences in the distribution of the isothermal transformation between the two discs were not significant,but the temperature of the hydraulically formed discs was higher than that of the hammer forging,and the uniformity of the temperature distribution was slightly better.The high density of dislocations in the hammer die-forged GH4169alloy effectively promoted the nucleation of theγ"phase,and the increase of the precipitation strengthening phase made the hammer-forged GH4169 alloy have a higher overall performance than the hydraulic forging alloy.Compared with those forged by hydraulic press,GH4169 alloy discs prepared by hammer have better overall properties.

关 键 词：GH4169涡轮盘 数值模拟 对击锤 等温锻压机 组织性能差异 

分 类 号：TG316.3[金属学及工艺—金属压力加工]