Hetero-lamellar structure design for enhanced strength and ductility of Ti enabled via additive manufacturing

• الحاوية / القاعدة: Materials Research Letters
• المؤلفون الرئيسيون: Jingyuan Shen, Chunlei Zhang, Zhihao Pan, Dorte Juul Jensen, Tianbo Yu
• التنسيق: مقال
• اللغة: الإنجليزية
• منشور في: Taylor & Francis Group 2025-11-01
• الموضوعات: Hetero-lamellar structure; additive manufacturing; strength and ductility; deformation mechanisms
• الوصول للمادة أونلاين: https://www.tandfonline.com/doi/10.1080/21663831.2025.2581842
• تدمد: 2166-3831

Additive manufacturing of metallic components not only allows flexible component design but also microstructural tailoring. Herein, we present a methodology for preparation of a pure Ti plate with a sandwich-like hetero-lamellar structure by combining three-dimensional (3D) printing and conventional manufacturing. The resulting layered/gradient microstructure leads to different deformation mechanisms across the plate thickness, resulting in an enhanced strain-hardening capacity compared with mono-structured Ti. The hetero-lamellar plate shows a superior combination of strength and ductility, with an exceptional uniform elongation of 27%.