<p>This study investigates the recrystallization behavior and texture evolution of cold-rolled Ti-15V-3Cr-3Sn-3Al (Ti-15333) alloy during the nucleation and grain growth stages. The microstructure after 80% cold rolling exhibited elongated grains and prominent shear bands (SBs), along with a dominant γ-fiber and α-fiber texture. Nucleation of recrystallized grains predominantly occurred along SBs and at severely deformed grain boundaries (GBs), with a preference for γ-fiber regions due to their elevated stored energy. During recrystallization, the initial I <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11837_2025_7482_Article_IEq1.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="87" /> </InlineMediaObject> <EquationSource Format="TEX">\(\left\{ {112} \right\}\left\langle {110} \right\rangle\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfenced close="}" open="{"> <mn>112</mn> </mfenced> <mfenced close="〉" open="〈"> <mn>110</mn> </mfenced> </mrow> </math></EquationSource> </InlineEquation> texture component transformed into a stronger F <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11837_2025_7482_Article_IEq2.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="87" /> </InlineMediaObject> <EquationSource Format="TEX">\(\left\{ {111} \right\}\left\langle {112} \right\rangle\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfenced close="}" open="{"> <mn>111</mn> </mfenced> <mfenced close="〉" open="〈"> <mn>112</mn> </mfenced> </mrow> </math></EquationSource> </InlineEquation> component, along with the development of a rotated cube <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11837_2025_7482_Article_IEq3.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="84" /> </InlineMediaObject> <EquationSource Format="TEX">\(\{ 100)\left\langle {110} \right\rangle\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mrow> <mo stretchy="false">{</mo> <mn>100</mn> <mo stretchy="false">)</mo> </mrow> <mfenced close="〉" open="〈"> <mn>110</mn> </mfenced> </mrow> </math></EquationSource> </InlineEquation> component. As grain growth proceeded, a continuous γ-fiber texture with a strong F <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11837_2025_7482_Article_IEq2.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="87" /> </InlineMediaObject> <EquationSource Format="TEX">\(\left\{ {111} \right\}\left\langle {112} \right\rangle\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfenced close="}" open="{"> <mn>111</mn> </mfenced> <mfenced close="〉" open="〈"> <mn>112</mn> </mfenced> </mrow> </math></EquationSource> </InlineEquation> component appeared, while the α-fiber texture diminished in the recrystallized grains. Full recrystallization was achieved after 25&#xa0;min of annealing at 780°C, resulting in an average grain size (GS<sub>avg</sub>) of 30&#xa0;μm. Subgrain structures exhibited pronounced intensity around the cube <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11837_2025_7482_Article_IEq5.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="87" /> </InlineMediaObject> <EquationSource Format="TEX">\(\left\{ {100} \right\}\left\langle {001} \right\rangle\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfenced close="}" open="{"> <mn>100</mn> </mfenced> <mfenced close="〉" open="〈"> <mn>001</mn> </mfenced> </mrow> </math></EquationSource> </InlineEquation> and nearby orientations (30°, 0°–40°, 45°) during grain growth. These findings provide critical insights into the intermediate stages of texture development between the deformed and fully recrystallized states in the Ti-15333 alloy.</p>

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Crystallographic Texture Evolution During the Nucleation and Grain Growth Process in Metastable Ti-15V-3Cr-3Sn-3Al Alloy

  • Diksha Mahadule,
  • Mattipally Prasad,
  • Aman Gupta,
  • Rajesh Khatirkar,
  • Shi-Hoon Choi

摘要

This study investigates the recrystallization behavior and texture evolution of cold-rolled Ti-15V-3Cr-3Sn-3Al (Ti-15333) alloy during the nucleation and grain growth stages. The microstructure after 80% cold rolling exhibited elongated grains and prominent shear bands (SBs), along with a dominant γ-fiber and α-fiber texture. Nucleation of recrystallized grains predominantly occurred along SBs and at severely deformed grain boundaries (GBs), with a preference for γ-fiber regions due to their elevated stored energy. During recrystallization, the initial I \(\left\{ {112} \right\}\left\langle {110} \right\rangle\) 112 110 texture component transformed into a stronger F \(\left\{ {111} \right\}\left\langle {112} \right\rangle\) 111 112 component, along with the development of a rotated cube \(\{ 100)\left\langle {110} \right\rangle\) { 100 ) 110 component. As grain growth proceeded, a continuous γ-fiber texture with a strong F \(\left\{ {111} \right\}\left\langle {112} \right\rangle\) 111 112 component appeared, while the α-fiber texture diminished in the recrystallized grains. Full recrystallization was achieved after 25 min of annealing at 780°C, resulting in an average grain size (GSavg) of 30 μm. Subgrain structures exhibited pronounced intensity around the cube \(\left\{ {100} \right\}\left\langle {001} \right\rangle\) 100 001 and nearby orientations (30°, 0°–40°, 45°) during grain growth. These findings provide critical insights into the intermediate stages of texture development between the deformed and fully recrystallized states in the Ti-15333 alloy.