Transactions of Materials and Heat Treatment

Title：Study on flow stress model of deformed Ti40 alloy at high temperature

Authors： WANG Fang LI Xin LU Shi-qiang WANG Ke-lu HUANG Xu CAO Jing-xia

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

KeyWords： deformed Ti40 alloy flow stress model Arrhenius equation temperature compensation

ClassificationCode：TG319

year,vol(issue):pagenumber：2012,37(2):134-138

Abstract：

The experimental data obtained in hot compression tests that conducted in the temperature range of 12231373K and strain rate of 0.0011.0s-1 were used to study the flow stress model of deformed Ti40 alloy. By using experimental data, the applicability of Arrhenius equation to deformed Ti40 alloy was analyzed and it could be found that employing hyperbolic sine Arrhenius equation to construct flow stress model of deformed Ti40 alloy was suitable, furthermore, temperature compensation and path variables were introduced to improve the flow stress model. Error analysis of the model was estimated by the values of multiple correlation coefficient and average absolute relative error, and the results show that the improved flow stress model of deformed Ti40 alloy has a high accurate.

Funds：

国家自然科学基金资助项目（51005112）；航空科学基金资助项目（2010ZF56019）；江西省教育厅青年科学基金资助项目（GJJ11156）；轻合金加工科学和技术国防重点学科实验室开放基金资助项目（gf200901008）

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