Deformation Behavior and Processing Map of High Temperature of TC21 Titanium Alloy

Ying Gong

doi:10.4028/www.scientific.net/AMM.274.427

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 274Deformation Behavior and Processing Map of High...

Deformation Behavior and Processing Map of High Temperature of TC21 Titanium Alloy

Abstract:

The compression test on TC21 titanium alloy was carried out in the temperature range of 860~940oC and the strain rate range of 0.01~10s-1 on Gleeble-1500D hot simulation machine. And the hot deformation behavior was studied. The processing map was calculated and analyzed according the dynamic materials model. It is found that the flow stress of TC21 decreases with the increasing of the temperature and the decreasing of the strain rate. The flow stress curves are characterized by steady state at low strain rate( s-1）but discontinuous yield at high strain rate( s-1). The processing map established at the true strain of 0.4 shows that there are three regions, instability and safe and peak region, and the efficiencies of power dissipation are 0~25%，31%~37% and 43%~49% respectively. The peak region is the optimum hot working zone of TC21 titanium alloy.

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Periodical:

Applied Mechanics and Materials (Volume 274)

Pages:

427-431

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.274.427

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Online since:

January 2013

Authors:

Ying Gong

Keywords:

Flow Stress, Hot Deformation, Processing Map, TC21 Titanium Alloy

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