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Characterisation of the interfacial heat transfer coefficient in hot stamping of titanium alloys
International Communications in Heat and Mass Transfer ( IF 7 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.icheatmasstransfer.2020.104535
Xiaochuan Liu , Mateusz Kopec , Omer El Fakir , Haitao Qu , Yaoqi Wang , Liliang Wang , Zhiqiang Li

Abstract The interfacial heat transfer coefficient (IHTC) for titanium alloys is an important parameter in non-isothermal hot stamping processes to determine the temperature field as well as temperature-dependent material behaviours that consequently affect the post-form properties of the formed components. However, the IHTC for titanium alloys in hot stamping processes has seldom been studied before. In the present research, the effects of contact pressure, lubricant, surface roughness, tooling material and initial blank temperature on the IHTC for the titanium alloy Ti-6Al-4V were studied and modelled to characterise the IHTC values under various hot stamping conditions as well as identify the functional mechanisms affecting the IHTC. Furthermore, the results of hot stamping of Ti-6Al4V wing stiffener components were used to verify the simulation results of the temperature field of the formed component with an error of less than 5%.

中文翻译:

钛合金热冲压界面传热系数表征

摘要 钛合金的界面传热系数 (IHTC) 是非等温热冲压工艺中的一个重要参数,用于确定温度场以及与温度相关的材料行为,从而影响成形部件的后成形性能。然而,以前很少有人研究钛合金在热冲压过程中的 IHTC。在目前的研究中,接触压力、润滑剂、表面粗糙度、模具材料和初始坯料温度对钛合金 Ti-6Al-4V 的 IHTC 的影响进行了研究和建模,以表征各种热冲压条件下的 IHTC 值。确定影响 IHTC 的功能机制。此外,
更新日期:2020-04-01
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