Compressive creep behavior of a γ-TiAl based Ti–45Al–8Nb–2Cr-0.2B alloy: The role of β(B2)-phase and concurrent phase transformations

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 774; p. 138891
• Main Authors: Singh, Vajinder, Mondal, Chandan, Sarkar, Rajdeep, Bhattacharjee, P.P., Ghosal, P.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 13.02.2020; Elsevier BV
• Subjects: Alloys; Cold flow; Compressive creep; Creep rate; Creep strength; Creep tests; Deformation; Dislocation mobility; EBSD; Intermetallic compounds; Microstructure; Misalignment; Phase transitions; Steady state creep; TEM; Temperature dependence; TiAl-Based alloy; Titanium aluminides; Titanium base alloys; Compressive creep; Microstructure; TEM; EBSD; TiAl-Based alloy

The primary and steady-state compressive creep deformation behavior of an as-cast high Nb containing γ-TiA1 alloy having remnant β(B2)-phase has been studied over the temperature range of 750–850 °C at constant initial applied stress levels between 75-200 MPa. The creep curves derived over the entir...