Characterization of Dynamic Globularization Behavior during Hot Working of Ti-6Al-4V Alloy
The dynamic globularization behavior during hot working of Ti-6Al-4V alloy was investigated by high temperature torsion tests. The torsion tests were carried out to investigate microstructure evolution occurring during dynamic globularization in Ti-6Al-4V alloy. The torsion tests were performed under a wide range of temperatures and strain rates with true strain up to 2. The flow curves revealed that the amount of flow softening for the fine alpha-lamellae structure was higher than that for the coarse alpha-lamellae structure under the temperature of 900oC. The effects of hot deformation parameters and initial microstructures on the dynamic globularization were analyzed.
Young Won Chang, Nack J. Kim and Chong Soo Lee
J. T. Yeom et al., "Characterization of Dynamic Globularization Behavior during Hot Working of Ti-6Al-4V Alloy", Advanced Materials Research, Vols. 26-28, pp. 1033-1036, 2007