Enhanced mechanical properties of Ti6Al4V alloy fabricated by laser additive manufacturing under static magnetic field

Materials Research Letters

Jian Lu¹  Hanlin Liao²  Yves Fautrelle³  Zhongming Ren⁴  Ruixin Zhao⁴  Tao Hu⁴  Chaoyue Chen⁴  Sansan Shuai⁴  Jiang Wang⁴ 

[1] Hong Kong Branch of National Precious Metals Material Engineering Research Center, Department of Material Science and Engineering, City University of Hong Kong, Hong Kong, People’s Republic of China;ICB UMR 6303, CNRS, University Bourgogne Franche-Comté, UTBM, Belfort, France;SIMAP-EPM-Madylam/G-INP/CNRS, PHELMA, Saint-Martin-d’Heres Cedex, France;State Key Laboratory of Advanced Special Steels, School of Materials Science and Engineering, Shanghai University, Shanghai, People’s Republic of China;

关键词: Laser deposition;    titanium alloys;    magnetic field;    texture;   

DOI  :  10.1080/21663831.2022.2064195

来源: DOAJ

【 摘 要 】

This study introduced a novel magnetic-field regulation method in metallic additive manufacturing to achieve the refined grain structure and enhanced mechanical properties without post-treatment and composition changes. As a showcase material, the Ti6Al4V alloy was fabricated using direct energy deposition under the static magnetic field (SMF). It is found that the transverse SMF of 0.55 T can effectively regulate the microstructure with twisted prior-β grains (strong <001> orientation to weak <110> orientation) and discontinuous α grain boundaries. The tensile test shows a significant improvement of tensile elongation (εf) in both longitudinal and transverse directions with a slight strength decrease.

【 授权许可】

Unknown