两种优质GH4169合金的显微组织及其对持久性能的影响

The Microstructure of Two Premium Quality GH4169 Superalloy and Its Effect on Stress-rupture Properties

本文研究了高强度和直接时效两种GH4169合金的微观组织和持久断裂性能,探讨了微观组织、持久性能和热机械处理工艺间的关系。研究表明晶粒度及δ相的数量和分布是控制GH4169合金持久性能的关键因素。

The microstructure and stress-rupture properties of high strength processed and direct aged GH4169 superalloys are investigated. The relationship of microstructure, stress-rupture properties and thermomechanical processing are discussed. It is found that the most important factors controlling the stress-rupture properties in GH4169 are the grain size, the quantity and distribution of δ phase.