Photo from wikipedia
Abstract Microstructure evolution during long-term thermal exposure and stress rupture in Waspaloy was investigated in detail. During thermal and stress exposure, γ′ phase and grain boundary M23C6 carbides kept microstructure… Click to show full abstract
Abstract Microstructure evolution during long-term thermal exposure and stress rupture in Waspaloy was investigated in detail. During thermal and stress exposure, γ′ phase and grain boundary M23C6 carbides kept microstructure stability. The primary MC carbides only experienced long time thermal exposure didn't decompose significantly while those experienced long time thermal and stress exposure degenerate severely. Decomposition of primary MC carbides is detrimental to the stress rupture properties of the alloy and it can be expressed as: MC + γ → M23C6 + γ′. After long term aging (650°C/5000h), the stress rupture specimen (815°C/325MPa) showed a mixed mode of deformation mechanism : particle shearing and precipitate bypassing.
Journal Title: Journal of Alloys and Compounds
Year Published: 2018
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!