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Mechanical behaviour of induction sintered blended elemental powder metallurgy Ti alloys

机译：感应烧结混合元素粉末冶金Ti合金的力学行为

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摘要

Powder metallurgy Ti alloys are commonly processed via vacuum sintering, which is a lengthy and energy intensive process that contributes to the high cost of the final product. In this comparative study, we demonstrate that induction sintering, where consolidation of blended elemental Ti alloys is achieved by means of high-frequency induction heating, is a promising alternative to consolidate both wrought-equivalent (Ti-6Al-4V and Ti-3Al-2V) and low-cost Fe-bearing (Ti-5Fe and Ti-5SS) powder metallurgy Ti alloys more efficiently. It is found that high relative density values and chemical homogeneity are achieved regardless of the sintering technique or chemistry of the alloy. With respect to vacuum sintered materials, the induction sintered alloys have slightly lower relative density, finer microfeatures, lower oxygen content and comparable tensile behaviour, making them suitable candidates for structural engineering products manufactured at lower cost. With the right processing parameters, low-cost Fe-bearing powder metallurgy Ti alloys have comparable properties to those of wrought-equivalent alloys where cost reduction is obtained via reducing the intrinsic cost of the material.
机译：粉末冶金Ti合金通常通过真空烧结加工，这是一种冗长而能量的密集过程，有助于最终产品的高成本。在该比较研究中，我们证明了通过高频感应加热实现混合元素Ti合金的诱导烧结，其中巩固了锻炼（Ti-6Al-4V和Ti-3 al-的有希望的替代方案2V）和低成本的Fe-uber（Ti-5Fe和Ti-5SS）粉末冶金Ti合金更有效。结果发现，无论合金的烧结技术还是化学，都可以实现高相对密度值和化学均匀性。关于真空烧结材料，感应烧结合金的相对密度略低，细微的微泡，较低的氧含量和相当的拉伸行为略低，使其适用于以较低成本制造的结构工程产品的合适候选者。利用正确的加工参数，低成本的Fe-ubious粉末冶金Ti合金具有与锻造相当合金的相当性，通过降低材料的内在成本，获得成本降低的成本。

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