Determination of the friction factor of Ti-6Al-4V titanium alloy in hot forging by means of ring-compression test using FEM |
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| Authors: | Yanchun Zhu Xiong MaQingan Tai Zhihua LiXiaoguang Li |
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| Affiliation: | a State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, PR China
b Shenyang Liming Aero-engine (Group) Corporation Limited, Shenyang 110043, PR China |
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| Abstract: | The friction factor of Ti-6Al-4V titanium alloy under hot forging situation was determined by the combined approach of ring-compression tests and finite element (FE) simulations. It is noticed in particular that the heat-transfer (HT) coefficient has significant effects on the metal flow and calibration curves, thereby affects the measurement of interfacial friction factor. Moreover, the HT coefficients are different for glass lubricant and dry friction conditions. Therefore, different HT coefficients should be employed to generate the calibration curves when both of the lubricant conditions were applied for determining the interfacial friction coefficients in hot ring-compression of Ti-6Al-4V titanium alloy. |
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| Keywords: | Heat-transfer coefficient Calibration curves Ring-compression test FEM |
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