A comparative study on the corrosion, wear, and tribocorrosion performances of Ti-6.5Al–2Zr–1Mo–1V (TA15) alloy fabricated by selective laser melting and laser metal deposition

作者：Wei Xu, Zhiheng Du, Zhe Wang, Xing Ran, Zhiyong Li, Rong Chen, Xiangyu Zhu, Xiaohang Zhang, Jiazhen Zhang, Xin Lu · 发表于：Journal of Materials Research and Technology · 年份：2024 · DOI：10.1016/j.jmrt.2024.05.049 · 被引用次数：25 · 研究领域：Additive Manufacturing Materials and Processes、Metal and Thin Film Mechanics、Titanium Alloys Microstructure and Properties

Corrosion-erosion performances of Ti-6.5Al-2Zr-1Mo-1V (TA15) alloy fabricated by two laser additive manufacturing technologies, namely selective laser melting (SLM) and laser metal deposition (LMD) were investigated, and compared with those of traditional forged counterpart. Results show that SLM-ed TA15 possesses better corrosion, wear, and tribocorrosion resistances than LMD-ed and forged TA15. This is mainly attributed to the ultrafine-grain αʹ phase in the microstructure of SLM-ed sample, which improves the hardness and thereby enhances the wear and tribocorrosion resistance. Additionally, the complete αʹ phase formed in SLM-ed sample also avoids the galvanic corrosion that occurs at the α+β-type LMD-ed and forged samples.