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  

Effects of Forging Technology and Parameters of Heating Treatment on the Microstructure Uniformity of GH738 Ring Part

作　　者：邰清安[1] 李晓光[1] 国振兴[1] 赵兴东[1] 王健妍 徐强[1] 

机构地区：[1]沈阳黎明航空发动机(集团)有限责任公司,沈阳110043

出　　处：《精密成形工程》2013年第6期7-10,共4页Journal of Netshape Forming Engineering

摘　　要：对同一炉材料实施2种不同轧环锻造过程,而后在锻态下进行了1020℃/4 h,1040℃/4 h固溶处理,以及845℃/4 h稳定化和760℃/16 h时效处理。通过对组织变化的对比,分析了锻造工艺和热处理参数对GH738合金环形锻件组织均匀性的影响规律。结果表明:不同锻造工艺对GH738合金环形锻件各部位的组织均匀性的影响不大,2种工艺均可获得均匀的组织,但其晶粒度等级有所不同;较低的固溶温度(1020℃)更有利于提高GH738合金环形件的组织均匀性,较高的固溶温度(1040℃)使得合金的混晶现象更明显。Two different processes of ring forging were carried out with the material in the same heat. Solution treatments under 1020 ℃ for 4 h and 1040 ℃ for 4 h, stabilization under 845 ℃ for 4 h and aging treatments under 760 ℃ for 16 h were conducted subsequently. Through the microstructure comparison, effects of forging technology and parameters of heating treatment on the micro- structure uniformity of GH738 alloy ring parts were analyzed. The results showed that forging technology had little effect on the micro- structure uniformity of GH738 alloy ring parts, homogeneous microstructures could be obtained by the two technologies, but the scales of grain size were different, besides, lower temperature of solution treatment（ about 1020 ℃ ） was beneficial to the improvement of mi- crostructure uniformity, higher temperature（ about 1040 ℃ ） more easily led to the occurrence of mixed crystals phenomenon.

关 键 词：GH738合金 环形锻件 组织均匀性 

分 类 号：TG316[金属学及工艺—金属压力加工]