Transactions of Materials and Heat Treatment

Title：Study on constitutive relationship of Ti40 burn-resistant titanium alloy

Authors： HU Meng LU Shi-qiang LI Xin HUANG Xu CAO Jing-xia

Unit： Nanchang Hangkong University Nanchang Hangkong University Beijing Institute of Aeronautical Materials

KeyWords： Ti40 alloy flow stress constitutive relationship hot working process

ClassificationCode：TG146.2+3

year,vol(issue):pagenumber：2011,36(2):119-123

Abstract：

The isothermal and constant strain rate compression tests for Ti40 alloy were carried out in the temperature range of 9501100 ℃ and strain rate range of 0.0011s-1 by using the Gleeble hot working simulator. By analyzing the true stress-true strain curves of Ti40 alloy, the influence of thermomechanical parameter on flow stress was studied and constitutive relationship for Ti40 alloy was constructed. Error analysis shows that the constructed constitutive relationship has a good accuracy, and it can be used for guiding the hot working process and applied in finite element simulation of Ti40 alloy.

Funds：

国家重点基础研究发展计划资助项目（2007CB613803）；国家自然科学基金资助项目（51005112）；航空科学基金资助项目（2009ZE56014）

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