电弧增材制造高强度Al-Mg-Sc系合金研究进展：冶金缺陷、微观组织和力学性能

马成勇, 侯旭儒, 赵琳, 阚成玲, 曹洋, 彭云, 田志凌

Research Progress on High-Strength Al-Mg-Sc Alloys Fabricated by Wire Arc Additive Manufacturing: Metallurgical Defects, Microstructure, and Performance

MA Chengyong, HOU Xuru, ZHAO Lin, KAN Chengling, CAO Yang, PENG Yun, TIAN Zhiling

图12 WAAM成形Al-Mg-Sc-Zr合金微观组织演变机理及强化机制[13]

Fig.12 Microstructure evolution mechanisms (a-f) and strengthening mechanism (g) of WAAM Al-Mg-Sc-Zr alloy[13] (FGZ—fine equiaxed grain zone, CGZ—coarse equiaxed grain zone; σ0 is the YS of pure Al (30-50 MPa); σHP, σSS, σP, and σD are the YS induced by grain refinement, solid solution strengthening, precipitation strengthening, and dislocation strengthening, respectively)