Influence of cross – Rolling on the microstructure and mechanical properties of Zn bioabsorbable alloys

• Published in: Materials letters Vol. 279; p. 128504
• Main Authors: Ramirez–Ledesma, A.L., Domínguez–Contreras, L.A., Juarez–Islas, J.A., Paternoster, C., Mantovani, D.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.11.2020; Elsevier BV
• Subjects: Biomedical materials; Cross rolling; Magnesium; Materials science; Mechanical properties; Microstructure; Recrystallization; Thermomechanical treatment; Zinc; Zn – based bioabsorbable alloys; Mechanical properties; Cross rolling; Microstructure; Zn – based bioabsorbable alloys
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2020.128504

[Display omitted] •Two different thermomechanical processing routes are proposed for Zn alloys.•Cross rolling significantly increases ductility on the proposed Zn alloys.•Zn–5.0Ag–0.5Mg alloy possess better response from unidirectional and cross rolling.•Two recrystallization mechanisms were found governing each processing route. Biomaterials have saved or improved the life and its quality for millions around the Globe. Today, bioabsorbable metals are opening new horizons to medicine and clinics. In this study, two rolling routes, unidirectional (UR) and cross rolling (CR) were applied to induce different microstructural features on two Zn alloys: Zn–5.0Ag–0.5Mg (A–1) and Zn–10.0Ag–1.0 Mg (A–2). Results demonstrated that each thermomechanical processing induces different recrystallization mechanisms, impacting relevantly the alloy’s mechanical behavior. Most importantly, it was experimentally evidenced that CR provides to the alloys a more isotropic microstructure. Consequently, both CR alloys exhibited homogeneous mechanical behavior when compared with the UR condition.