EFFECT OF COLD ROLLING ON LOW CYCLE FATIGUE BEHAVIOR OF A NEAR -ALPHA TITANIUM ALLOY

M.K. Tripathi, N.C.Santhi Srinivas, V. Singh

Abstract: Four cold reductions, viz. 2.5, 5, 7.5 and 10 percent are given to a near- a Titanium alloy Timetal 834, following solution treatment in a+ß range and stabilization. LCF tests were conducted at room temperature in total strain control mode at ?et /2 from ± 0.45% to ± 1.05%. Prior to LCF testing, gage section of the specimens was elecrtopolished to reveal the surface modifications, resulting from fatigue testing. It was observed that cold rolling considerably enhanced fatigue life of the alloy.

Keywords: Titanium alloys; cold rolling; low-cycle fatigue; strain rate; Coffin-Manson relation

DOI: https://doi.org/10.15623/ijret.2013.0208053