理化检验-物理分册2011，Vol.47Issue(6)：379-381,3.
某飞机GH1140排气导管裂纹分析
Crack Analysis of GH1140 High Temperature Alloy Vent-pipe in Some Plane
李智锋1
作者信息
- 1. 西安飞机工业(集团)有限责任公司，西安710089
- 折叠
摘要
Abstract
A crack was found in the inter stiffener of GH4110 high temperature alloy vent-pipe of starting engine when the plane was checked Chemical compositions analysis, metallographic examination and fracture analysis were used to analyze the cracking reason of the vent-pipe. The results show that the grain boundary presented poor chromium in the pipe inwall surface because of the role of high-temperature gas erosion, which reduce the strength, lasting and fatigue properties of the alloy. The vent-pipe failure was the thermal fatigue cracking, which was caused by the stress concentration of the ground place, interior heat-stress and mechanical vibration.关键词
GH1140高温合金；排气导管；裂纹；热疲劳开裂Key words
GH1140 high temperature alloy/ vent-pipe/ crack/ thermal fatigue cracking分类
航空航天引用本文复制引用
李智锋..某飞机GH1140排气导管裂纹分析[J].理化检验-物理分册,2011,47(6):379-381,3.
