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Precise Measurements of Thermophysical Properties of Liquid Ti–6Al–4V (Ti64) Alloy On Board the International Space Station
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-04-30 , DOI: 10.1002/adem.202000169 Markus Mohr 1 , Rainer Wunderlich 2 , Rada Novakovic 3 , Enrica Ricci 3 , Hans-Jörg Fecht 1
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-04-30 , DOI: 10.1002/adem.202000169 Markus Mohr 1 , Rainer Wunderlich 2 , Rada Novakovic 3 , Enrica Ricci 3 , Hans-Jörg Fecht 1
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The titanium alloy Ti–6Al–4V (Ti64) is a very widely applied alloy with extreme importance in the fields of aerospace, automotive, and biomedicine. For a large range of manufacturing methods that involve the liquid phase, such as casting, metal injection molding, thermal spraying, and additive manufacturing, process simulations are an important tool for the optimization and development of the fabrication process. Reliable thermophysical property data of Ti64 in the solid and the liquid phase are necessary inputs to such models. Due to the high melt reactivity of titanium alloys with container materials, measurements performed using conventional thermophysical equipment are usually impossible. Precise benchmark measurement of thermophysical properties (surface tension, viscosity, specific heat, total hemispherical emissivity, thermal conductivity, electrical resistivity, mass density) of Ti64 is presented in the undercooled liquid phase using containerless electromagnetic levitation on board the International Space Station (ISS). The obtained values are compared with predictive models that can help to analyze the data for other compositions of the alloy system. The property values are applied to simulations of industrial fabrication processes, to optimize these processes and thus the product quality.
中文翻译：
在国际空间站上对液态Ti-6Al-4V（Ti64）合金的热物理性质进行精确测量
钛合金Ti-6Al-4V（Ti64）是一种应用非常广泛的合金，在航空航天，汽车和生物医学领域极为重要。对于涉及液相的多种制造方法，例如铸造，金属注射成型，热喷涂和增材制造，过程模拟是优化和发展制造过程的重要工具。固相和液相中可靠的Ti64热物理性质数据是此类模型的必要输入。由于钛合金与容器材料的高熔体反应性，使用常规热物理设备进行测量通常是不可能的。精确的基准热物理性质测量（表面张力，粘度，比热，总半球发射率，导热系数，在国际空间站（ISS）上使用无容器电磁悬浮法在过冷液相中显示了Ti64的电阻率，质量密度）。将获得的值与可以帮助分析合金系统其他成分的数据的预测模型进行比较。该属性值应用于工业制造过程的仿真，以优化这些过程，从而优化产品质量。
更新日期：2020-04-30
中文翻译：
在国际空间站上对液态Ti-6Al-4V（Ti64）合金的热物理性质进行精确测量
钛合金Ti-6Al-4V（Ti64）是一种应用非常广泛的合金，在航空航天，汽车和生物医学领域极为重要。对于涉及液相的多种制造方法，例如铸造，金属注射成型，热喷涂和增材制造，过程模拟是优化和发展制造过程的重要工具。固相和液相中可靠的Ti64热物理性质数据是此类模型的必要输入。由于钛合金与容器材料的高熔体反应性，使用常规热物理设备进行测量通常是不可能的。精确的基准热物理性质测量（表面张力，粘度，比热，总半球发射率，导热系数，在国际空间站（ISS）上使用无容器电磁悬浮法在过冷液相中显示了Ti64的电阻率，质量密度）。将获得的值与可以帮助分析合金系统其他成分的数据的预测模型进行比较。该属性值应用于工业制造过程的仿真，以优化这些过程，从而优化产品质量。
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