Transactions of Materials and Heat Treatment

Title：Study on constitutive relationship for TC11 titanium alloy with thick laths widmanstatten microstructures deformed in two phase field

Authors： DING Lin-hai LU Shi-qiang WANG Ke-lu LI Xin (School of Materials Science and Engineering Nanchang Hangkong University Nanchang 330063 China)

Unit：

KeyWords： TC11 titanium alloy widmanstatten microstructure flow stress constitutive relationship

ClassificationCode：TG146.23

year,vol(issue):pagenumber：2008,33(3):155-158

Abstract：

The isothermal constant strain rate compression tests for TC11 titanium alloy with thick laths widmanstatten microstructures were carried out in the temperature range of 850-1000 ℃ and strain rate range of 0.001-10 s-1 by using the Thermecmaster-Z hot working simulator.The change of flow stress with thermomechanical parameters was revealed from true stress-true strain curves and the applicability of Arrhenius equations for TC11 titanium alloy was analyzed.On the base of effects of strain rate,temperature and strain on flow stress,constitutive relationship for TC11 titanium alloy with thick laths widmanstatten microstructures was constructed.Error analysis shows that the experimental data are in good agreement with the theoretical curves.

Funds：

江西省材料科学与工程中心基金资助项目(ZX200601002)

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