Low cycle fatigue behaviour of Ti-6Al-5Zr-0·5Mo-0·25Si alloy at room temperature

Abstract

Low cycle fatigue (LCF) behaviour of the near a titanium alloy, Ti-6Al-5Zr-0·5Mo-0·25Si (LT26A), was investigated in the (α + β) as well as treated conditions at room temperature. LCF tests were carried out under total strain controlled mode in the range of Δεt/2: from ±0-60% to ±1-40%. The alloy shows cyclic softening in both the conditions. Also it exhibits dual slope Coffin-Manson (C-M) relationship in both the treated conditions. © Indian Academy of Sciences.