Mechanism of Creep Deformation of Alloy 230 Based on Microstructural Analyses
Creep testing of Alloy 230 was performed at 750, 850 and 950 °C under applied stresses equivalent to its 10% and 25% yield strength (YS) values. The results indicate that this alloy satisfied the maximum allowable creep strain of 1% when loaded to 0.10YS level at these temperatures. Microscopic evaluations revealed the formation of second phase particles including superstructures and carbide precipitates as a function of temperature. The enhanced plastic strain at 0.25YS stress level at 950 °C was attributed to dislocation glide, subgrain formation, and recrystallization.
Alloy 230; Creep mechanism; Deformations (Mechanics); Heat resistant alloys; Heat resistant alloys – Creep; Heat resistant alloys – Microstructure; Microscopy; Molybdenum; Nickel-chromium alloys; Temperature and stress effect; Thermal stresses; Tungsten
Engineering | Mechanical Engineering | Mechanics of Materials | Metallurgy
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Roy, A. K.
Mechanism of Creep Deformation of Alloy 230 Based on Microstructural Analyses.
Materials Science and Engineering: A, 527(29-30),