GH4169高温合金的热加工工艺  

Hot working process of GH4169 superalloy

作　　者：吕达 韩彦光 崔毅 赵英利 陈文 张泽峰 嵇爽 LüDa;Han Yanguang;Cui Yi;Zhao Yingli;Chen Wen;Zhang Zefeng;Ji Shuang(HBIS Material Technology Research Institute,Shijiazhuang Hebei 050000,China)

机构地区：[1]河钢材料技术研究院,河北石家庄050000

出　　处：《金属热处理》2023年第8期132-137,共6页Heat Treatment of Metals

摘　　要：通过调整工艺参数,结合力学性能和微观组织分析,研究了GH4169高温合金的热加工工艺。结果表明,均质化工艺可改善强化元素在枝晶间的偏析;开坯锻造的锻造比≥3时可改善混晶;采用中温形变热处理工艺可明显提高GH4169高温合金的力学性能,(1130~1160)℃开坯锻造+(980~1020)℃中温轧制热处理(水冷)+直接时效可提高合金的力学性能,抗拉强度可达1350 MPa,硬度可达50 HRC。By adjusting the process parameters,combined with analysis of mechanical properties and microstructure,the hot working process of GH4169 superalloy was studied.The results show that the segregation between dendrites can be improved by adjusting the homogenization treatment process.The size-mixed grains can be improved when the forging ratio is greater than or equal to 3.The mechanical properties of the GH4169 superalloy can be significantly improved by medium temperature deformation heat treatment process.Billet forging at(1130-1160)℃+medium temperature rolling heat treatment at(980-1020)℃(water cooling)+direct aging can improve the mechanical properties of the alloy,the tensile strength and hardness can reach 1350 MPa and 50 HRC,respectively.

关 键 词：GH4169高温合金 偏析 锻造比 中温形变热处理 力学性能 

分 类 号：TG132.3[一般工业技术—材料科学与工程] TG156.94[金属学及工艺—合金]