Second Stage Gas Turbine Blade Premature Replacement Investigation |
| |
Authors: | A. H. Mustafa Hameed H. Badairy Ihsan M. Al-Taie |
| |
Affiliation: | (1) Mechanical Services Shops Department, Saudi Aramco, Dhahran, Saudi Arabia;(2) Research & Development Center, Saudi Aramco, Dhahran, Saudi Arabia |
| |
Abstract: | This article investigates the root causes of the premature failure and replacement of a set of second-stage turbine blades from a heavy industrial gas turbine engine. The investigations included dye-penetrant testing, optical microscopy, X-ray diffractometry (XRD), Environmental Scanning Electron Microscopy (ESEM), and energy dispersive X-ray spectroscopy (EDS) techniques. Moreover, the effect of heat treatment process on restoring the blade microstructure so that the properties were suitable for service was also explored. As a result of the investigation, the second-stage turbine blades premature failure was attributed to the grain boundary secondary phase precipitates. These precipitates were present in the “as-found” condition of the investigated blades. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|