烟气轮机用GH132合金涡轮盘失效的分析  

An Analysis on Failure of Turbine Disk of Superalloy GH132

作　　者：张文泉[1] 徐志超[2] 董建新[2] 谢锡善[2] 

机构地区：[1]北京工业大学,北京100022 [2]北京科技大学

出　　处：《特殊钢》1997年第3期10-13,共4页Special Steel

摘　　要：研究了使用16960h后的YLⅡ-600OA型烟气轮机GH132合金一级涡轮盘的失效。结果表明,涡轮盘样齿底部与工艺槽交界处的应力集中导致发生以此为源区的蠕变断裂。此外,中温低塑性所引起的缺口敏感性及长期使用后轮缘部位的脆化倾向也会导致涡轮盘发生轮线断裂。The failure of the first stage turblne disk of superalloy GH132 in fluid catalyst served for 16 960 hours has been studied. The experimental results show that the stress concentration at the area between tooth root and processing slot resulted in creep fracture flom this region. In addition, the notch sensitivity caused by the low ductility at middle temperature and the brittle tendency after long tirne service also may result in frac-ture of disk rim.

关 键 词：GH132合金 失效 烟气轮机 涡轮盘 

分 类 号：TK14[动力工程及工程热物理—热能工程]