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Wojtaszek, Marek
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Publications (6/6 displayed)
- 2024A Comprehensive Study on Hot Deformation Behavior of the Metastable β Titanium Alloy Prepared by Blended Elemental Powder Metallurgy Approachcitations
- 2023A comprehensive study on hot deformation behaviour of the metastable β titanium alloy prepared by blended elemental powder metallurgy approach
- 2023Forging of PM Ti–6Al–4V alloy at the temperature above β-transus and high strain ratecitations
- 2023Microstructure and Mechanical Properties of In Situ Synthesized Metastable β Titanium Alloy Composite from Low-Cost Elemental Powderscitations
- 2021The analysis of flow behavior of Ti-6Al-2Sn-4Zr-6Mo alloy based on the processing mapscitations
- 2012The influence of the gas pressure infiltration parameters on the properties of AL-MMC reinforced with carbon fibres
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article
Forging of PM Ti–6Al–4V alloy at the temperature above β-transus and high strain rate
Abstract
<p>The results of the forging process in open dies of the powder metallurgy (PM) Ti–6Al–4V alloy, carried out at the temperature above β-transus and at a high strain rate were presented. As an initial material for the research relatively cheap elemental powders were used. This approach gives a real chance for the implementation of the developed technologies. As the range of phase transition temperature in titanium alloys is influenced also by the technology of their production, the β-transus temperature was estimated for the PM Ti–6Al–4V alloy. Finite element method (FEM) numerical analysis of the forging process at the temperature of 1000 °C and high strain rate was performed. The results obtained by the FEM modeling were verified under industrial conditions. The forging trials were made at the temperature of 1000 °C on a screw press operating at a speed of 250 mm s<sup>−1</sup>. For comparison, the alloy was also studied in as-cast and hot-rolled conditions, which is widely used as a feedstock. The influence of the method of manufacturing feedstock on the microstructure and selected properties of the forgings was determined. This approach allowed for a qualitative assessment of the PM material. The forging process in open dies of two different feedstocks led to the production of forgings with a uniform and similar lamellar microstructure. Thus, it was shown that the heating conditions, the parameters of the forging process, and the method of cooling the product after forging have a decisive influence on the microstructure condition of the forgings shaped in the temperature range of the β phase.</p>