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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
A Comprehensive Study on Hot Deformation Behavior of the Metastable β Titanium Alloy Prepared by Blended Elemental Powder Metallurgy Approach
Abstract
The hot deformation behavior of a Ti–5Al–5Mo–5V–3Cr alloy obtained by the Blended Elemental Powder Metallurgy approach was studied. Hot compression tests were performed to determine the stress–strain relationships at temperatures ranging from 800 °C to 1000 °C and strain rates between 0.1 and 20 s<sup>−1</sup>. Based on the collected data, a constitutive model was developed using an Arrhenius-type equation, and a deformation activation energy map was generated. Processing maps were created using the Dynamic Material Model theory, and a processing window indicating the optimal hot deformation parameters was determined at temperatures between 900 °C and 1000 °C and strain rates of 0.1–2.0 s<sup>−1</sup>. Microstructure observations confirmed the results of the DMM analysis, with a homogeneous and recrystallized microstructure found under the processing window parameters. The hot-rolling process was designed using FEM modeling and was successfully verified by laboratory tests. The hot-rolling parameters selected based on previous analysis resulted in a fully compacted material with controlled microstructure. The relationship between the deformation parameters, microstructure, hardness, and tensile properties of the Ti–5Al–5Mo–5V–3Cr alloy after hot rolling was analyzed. Hot rolling using the developed thermomechanical parameters resulted in a significant increase in tensile strength from 757 to 1009 MPa. In general, this study provides a comprehensive characterization of the hot deformation behavior of the Ti–5Al–5Mo–5V–3Cr alloy and valuable insights for optimizing its hot-processing parameters.