热处理工艺对真空冶炼GH871合金性能的影响  

Effect of Heat Treatment on Performance of GH871Alloy Melted by VIM and ESR

作　　者：毛征东[1] 周建波[2] 谢锡善[1] 陈跃南[3] 刘胜国[3] 

机构地区：[1]北京科技大学高温合金研究室,北京100083 [2]天津职业大学科研处,天津300402 [3]大冶特殊钢股份有限公司技术中心,湖北黄石435001

出　　处：《钢铁研究学报》2003年第1期52-56,共5页Journal of Iron and Steel Research

摘　　要：研究了15种热处理工艺对采用VIM配合ESR双联工艺冶炼的GH871合金力学性能的影响。结果表明:在保持高强度高持久寿命的同时提高该合金650℃持久塑性的最佳热处理工艺为980℃×1h固溶,油冷+720℃×16h时效,空冷。经此热处理后,该合金在保持室温抗拉强度为1130MPa、650℃抗拉强度为890MPa的同时,650℃持久塑性达5%以上。The effect of 15 kinds of heat treatment process on the mechanical properties of GH871 alloy melted by VIM and ESR has been studied and the optimal heat treatment established is: 980 ℃×1 h solution treatment, oil cooling+720 ℃×16 h aging, air cooling. The GH871 alloy produced in this way is characterized with high strength (1 130 MPa at room temperature and 890 MPa at 650 ℃) and high rupture ductility (above 5 % at 650 ℃).

关 键 词：GH871合金 VIM ESR 力学性能 

分 类 号：TG166[金属学及工艺—热处理]