Anisotropy of mechanical property and corrosion behavior of M2052 alloy fabricated by selectively laser melting

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2025-01, Vol.921, p.147552, Article 147552
• Main Authors: Sheng, Xin, Zhao, Yi, Wu, Jing, Huang, Zhaohua, Zhao, Boxue, Wang, Jun
• Format: Article
• Language: English
• Subjects: Anisotropy; Corrosion behavior; M2052 alloy; Mechanical property; Selective laser melting
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2024.147552

M2052 (Mn-20Cu-5Ni-2Fe, at%) alloy is a high-damping alloy with excellent comprehensive properties, widely used in vibration and noise reduction applications. Selective Laser Melting (SLM) technology can overcome the limitations of traditional processes and efficiently and accurately manufacture complex parts. In this study, M2052 alloy specimens were fabricated using SLM in horizontal (H0 samples), inclined (I45 samples), and vertical (V90 samples) directions. The microstructure, tensile properties, fracture morphology, and corrosion performance of the three directions were investigated. The anisotropy of yield strength and corrosion performance among the three samples was discussed. The results show that, compared to the inclined and vertical samples, the horizontal samples exhibited the highest yield and tensile strengths, with the I45 samples having the highest elongation of 26.82 %. The anisotropy of yield strength in different directions may be related to GND density, Taylor factor, and grain size. In 3.5 wt% NaCl solution, the corrosion resistance of different planes varied in the order of H0 > I45 > V90. The anisotropy of corrosion resistance may be attributed to differences in the microstructure.