Scholarlink

<p>Pure titanium is widely used in biomedical engineering and the chemical industry. Despite its excellent biocompatibility, corrosion resistance, and mechanical properties, its mechanical strength is still lower than that of Ti alloys; thus, thicker sheets are needed in applications. Heterogeneously structured materials may exhibit higher mechanical strengths while keeping the cost low. In particular, partial recrystallization can improve the ductility and strength of metallic materials, and reported approaches include (1) post-recrystallization aging to form precipitates and (2) reducing the stacking fault energy to retain nanotwins from plastic deformation in non-recrystallized zones. In this study, high strength and high ductility were simultaneously achieved in commercially pure Ti through precipitation of the α′-phase during partial recrystallization. After the heat treatment of a cold-worked sample, the recovered and recrystallized constituents in the microstructure have different deformation mechanisms. Higher mechanical properties were obtained after cold rolling to 66% thickness reduction and then annealing for 30&#xa0;min at 400–500&#xa0;°C. Commercially pure Ti underwent plastic deformation without appreciable mechanical twinning, and dislocation glide dominated the deformation process. Its tensile strength increased to 600&#xa0;MPa, and the total elongation was 23%.</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

Effect of Cold Rolling and Annealing on Microstructural Evolution and Mechanical Behavior of a Commercially Pure Grade II Titanium Containing α′-Martensite

  • 期刊论文

  • 发表日期：

    2026年1月5日

查看全文
  • Sofia Cruz de Souza,
  • Isadora Reis de Souza,
  • Dagoberto Brandão Santos

摘要

Pure titanium is widely used in biomedical engineering and the chemical industry. Despite its excellent biocompatibility, corrosion resistance, and mechanical properties, its mechanical strength is still lower than that of Ti alloys; thus, thicker sheets are needed in applications. Heterogeneously structured materials may exhibit higher mechanical strengths while keeping the cost low. In particular, partial recrystallization can improve the ductility and strength of metallic materials, and reported approaches include (1) post-recrystallization aging to form precipitates and (2) reducing the stacking fault energy to retain nanotwins from plastic deformation in non-recrystallized zones. In this study, high strength and high ductility were simultaneously achieved in commercially pure Ti through precipitation of the α′-phase during partial recrystallization. After the heat treatment of a cold-worked sample, the recovered and recrystallized constituents in the microstructure have different deformation mechanisms. Higher mechanical properties were obtained after cold rolling to 66% thickness reduction and then annealing for 30 min at 400–500 °C. Commercially pure Ti underwent plastic deformation without appreciable mechanical twinning, and dislocation glide dominated the deformation process. Its tensile strength increased to 600 MPa, and the total elongation was 23%.