摘要
经电子显微镜观察，ＧＨ１６９合金经５５０℃长期时效后，晶内有盘状γ＂相，弥散分布球形γ＇相和少量层状δ相。５５０℃５００ｈ时效后，２０℃σｂ为１４５３ＭＰａ，σ０．２为１２４０ＭＰａ，５５０℃１０００ｈ时效后，６５０℃σｂ为１１５３ＭＰａ，σ０．２为１０４０ＭＰａ。
The change of microstructure of alloy GH169 during long-aging was inyestigated by means of transmission electronic microscope. The disk shape Ye dispersed phase Y'and some 8 - laminae were observed on aging alloy at 550 C. After aging at 550 C for 500 hobers,the room temperature ultimate tensile strength(UTS)1453 MPa and yield strength (YS) 1240MPa of alloy GH169 were obtained,and after aging 550 ℃ for1000 hours, the 650 ℃ UTS and YS were measured-to be 1153and 1040 MPa respectively.
出处
《特殊钢》
北大核心
1994年第4期11-14,共4页
Special Steel
