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AuthorA. Majorell, S. Srivatsa, R.C. Picu
TitleMechanical behavior of Ti 6%Al4%V at high and moderate temperatures; Part I: Experimental results
Year2002
JournalMaterials Science and Engineering A
Volume326
Pages297-305
AbstractThis study investigates the plastic deformation of titanium alloy Ti-6Al-4V under low and moderate strain rates and various temperature conditions. Mechanical testing is performed in the temperature range 650 to 1340K (710 to 1950F) and under constant strain rate loading ranging from 0.001 to 10 per sec. The test results are correlated with the evolution of the microstructure and compared to published data. The flow stress of this alloy is strongly dependent on both temperature and deformation rate, with the temperature effect becoming negligible in the upper part of the temperature range investigated. At temperatures above 800K (980F) the flow stress decreases sharply with temperature. The effect of deformation rate on this transition is investigated and the possible mechanisms responsible for the behavior are discussed. Based on these experimental results, a physically-based constitutive law is developed in the sequel of this paper.