高负荷运转下发动机高压涡轮盘材料断裂分析  

Fracture Analysis of High Pressure Turbine Disk Under High Load Running

作　　者：南黄河[1] 

机构地区：[1]陕西铁路工程职业技术学院机械系,陕西渭南714000

出　　处：《铸造技术》2016年第2期265-267,共3页Foundry Technology

摘　　要：采用微观、宏观和能谱分析方法研究高负荷机械运转下发动机高压涡轮盘FGH 4097粉末高温合金的断裂原因及机理。结果表明,发动机报废的主要原因是高压涡轮盘的疲劳断裂。夹杂物的主要组成是毛坯焊接过程中产生的焊渣,焊渣和合金发生化学反应生成PPB。The fracture reason of FGH 4097 high pressure turbine disk under high load machine running was studied by micro-, macro- and energy spectrum analysis. The results show that the main reason for engine scrapped is fatigue fracture of the turbine disk. The main component of the debris is the welding slag during welding process. At the same time, PPB concomitant are obtained by reaction between alloy and welding slag.

关 键 词：高压涡轮 发动机 粉末冶金 断裂 

分 类 号：TK403[动力工程及工程热物理—动力机械及工程]