Scholarlink

<p>The evolution of texture and its impact on the mechanical properties of Mg-0.4Bi alloys were investigated. The alloys were hot-rolled at 400&#xa0;°C and, consequently, annealed at 250&#xa0;°C for 30 and 60&#xa0;min. The results indicate that the as-rolled alloy possesses a microstructure with deformed parent grains and fine dynamically recrystallized (DRX) grains. The recrystallization process was found to occur through discontinuous (DDRX), continuous (CDRX), and twin-induced (TDRX) dynamic recrystallization mechanisms. The deformed parent grains exhibited a sharp basal texture, while the recrystallized grains showed a weakened basal texture. In contrast, complete recrystallization occurred in the alloys that were rolled and then annealed for 30 and 60&#xa0;min. The alloy annealed for 30 displayed a rolling direction (RD)-spread basal texture, whereas the alloy annealed for 60&#xa0;min demonstrated a basal texture again. Grain boundary misorientation analysis revealed the formation of a new type of 19°[<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(10\overline{1 }0\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>10</mn> <mover> <mn>1</mn> <mo>¯</mo> </mover> <mn>0</mn> </mrow> </math></EquationSource> </InlineEquation>] boundaries in the as-rolled alloy and 40°[<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(2 20 \overline{22 } 1\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>220</mn> <mover> <mn>22</mn> <mo>¯</mo> </mover> <mn>1</mn> </mrow> </math></EquationSource> </InlineEquation>] boundaries in the rolled and annealed alloy for 30&#xa0;min. The as-rolled alloy exhibited higher tensile yield strength, while the alloy annealed for 30&#xa0;min showed better elongation properties than other alloys.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Texture Characteristics and Mechanical Properties of Deformed and Annealed Mg-0.4Bi Alloy

  • 期刊论文

  • 发表日期：

    2025年8月11日

查看全文
  • Mukesh Singh,
  • Hemant Kumar,
  • Mayank Mishra,
  • Mayur Dhake,
  • N. Thanabal,
  • R. Silambarasan,
  • P. Seenuvasaperumal,
  • Surendra Kumar Makineni,
  • Dudekula Althaf Basha

摘要

The evolution of texture and its impact on the mechanical properties of Mg-0.4Bi alloys were investigated. The alloys were hot-rolled at 400 °C and, consequently, annealed at 250 °C for 30 and 60 min. The results indicate that the as-rolled alloy possesses a microstructure with deformed parent grains and fine dynamically recrystallized (DRX) grains. The recrystallization process was found to occur through discontinuous (DDRX), continuous (CDRX), and twin-induced (TDRX) dynamic recrystallization mechanisms. The deformed parent grains exhibited a sharp basal texture, while the recrystallized grains showed a weakened basal texture. In contrast, complete recrystallization occurred in the alloys that were rolled and then annealed for 30 and 60 min. The alloy annealed for 30 displayed a rolling direction (RD)-spread basal texture, whereas the alloy annealed for 60 min demonstrated a basal texture again. Grain boundary misorientation analysis revealed the formation of a new type of 19°[ \(10\overline{1 }0\) 10 1 ¯ 0 ] boundaries in the as-rolled alloy and 40°[ \(2 20 \overline{22 } 1\) 220 22 ¯ 1 ] boundaries in the rolled and annealed alloy for 30 min. The as-rolled alloy exhibited higher tensile yield strength, while the alloy annealed for 30 min showed better elongation properties than other alloys.