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<p>Ti-6Al-4V (Ti-64) is one of the most widely used <i>α</i> + <i>β</i> titanium alloys. During its thermomechanical processing, strong and heterogeneous crystallographic textures can develop that are detrimental to mechanical performance. Existing texture data for Ti-64 in the <i>α</i> + <i>β</i> regime is limited and lacks detail on how the texture of both the hexagonal close-packed (HCP) <i>α</i> and body-centred cubic (BCC) <i>β</i> phases evolve during hot deformation. In this study, a comprehensive dataset of <i>α</i> and <i>β</i> textures was generated from hot rolling experiments at nine temperatures (825–1020&#xa0;°C) and three rolling reductions (up to 87.5&#xa0;pct), with different starting microstructures. High-throughput electron backscatter diffraction and synchrotron X-ray diffraction were used to characterise texture development. Results show that a moderate 0002//TD <i>α</i> alignment forms at all subtransus temperatures and becomes dominant above 895&#xa0;°C, increasing with both strain and temperature. In contrast, the <i>β</i> texture remains weak at lower temperatures but develops a strong <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11661_2025_7929_Article_IEq1.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="87" /> </InlineMediaObject> <EquationSource Format="TEX">\(\left\{001\right\}\langle 110\rangle \)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfenced close="}" open="{"> <mn>001</mn> </mfenced> <mrow> <mo stretchy="false">⟨</mo> <mn>110</mn> <mo stretchy="false">⟩</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> rotated cube component near and above the <i>β</i>-transus. Lamellar-starting microstructures led to slightly stronger textures but similar texture components. The full dataset has been made publicly available to support future modelling efforts and improve understanding of dual-phase texture development in titanium alloys.</p>

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Effect of Temperature, Strain and Microstructure on Texture Evolution of Ti-6Al-4V During Hot Rolling

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月4日

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  • Xiaohan Zeng,
  • Christopher S. Daniel,
  • William Asheshov,
  • Stefan Michalik,
  • Philip Prangnell,
  • João Quinta da Fonseca

摘要

Ti-6Al-4V (Ti-64) is one of the most widely used α + β titanium alloys. During its thermomechanical processing, strong and heterogeneous crystallographic textures can develop that are detrimental to mechanical performance. Existing texture data for Ti-64 in the α + β regime is limited and lacks detail on how the texture of both the hexagonal close-packed (HCP) α and body-centred cubic (BCC) β phases evolve during hot deformation. In this study, a comprehensive dataset of α and β textures was generated from hot rolling experiments at nine temperatures (825–1020 °C) and three rolling reductions (up to 87.5 pct), with different starting microstructures. High-throughput electron backscatter diffraction and synchrotron X-ray diffraction were used to characterise texture development. Results show that a moderate 0002//TD α alignment forms at all subtransus temperatures and becomes dominant above 895 °C, increasing with both strain and temperature. In contrast, the β texture remains weak at lower temperatures but develops a strong \(\left\{001\right\}\langle 110\rangle \) 001 ⟨ 110 ⟩ rotated cube component near and above the β-transus. Lamellar-starting microstructures led to slightly stronger textures but similar texture components. The full dataset has been made publicly available to support future modelling efforts and improve understanding of dual-phase texture development in titanium alloys.