Mechanism of Creep Deformation of Alloy 230 Based on Microstructural Analyses

Document Type



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


Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

UNLV article access

Search your library