Biserova-Tahchieva Alisiya, Biezma-Moraleda Maria V, Llorca-Isern Núria, Gonzalez-Lavin Judith, Linhardt Paul
Departament Ciència de Materials i Química Física, Universitat de Barcelona, 08028 Barcelona, Spain.
Departamento Ciencia e Ingeniería del Terreno y de los Materiales, Universidad de Cantabria, 39004 Santander, Spain.
Materials (Basel). 2023 Feb 24;16(5):1893. doi: 10.3390/ma16051893.
Additive manufacturing is an important and promising process of manufacturing due to its increasing demand in all industrial sectors, with special relevance in those related to metallic components since it permits the lightening of structures, producing complex geometries with a minimum waste of material. There are different techniques involved in additive manufacturing that must be carefully selected according to the chemical composition of the material and the final requirements. There is a large amount of research devoted to the technical development and the mechanical properties of the final components; however, not much attention has been paid yet to the corrosion behaviour in different service conditions. The aim of this paper is to deeply analyze the interaction between the chemical composition of different metallic alloys, the additive manufacturing processing, and their corrosion behaviour, determining the effects of the main microstructural features and defects associated with these specific processes, such as grain size, segregation, and porosity, among others. The corrosion resistance of the most-used systems obtained by additive manufacturing (AM) such as aluminum alloys, titanium alloys, and duplex stainless steels is analyzed to provide knowledge that can be a platform to create new ideas for materials manufacturing. Some conclusions and future guidelines for establishing good practices related to corrosion tests are proposed.
增材制造是一种重要且有前景的制造工艺，因其在所有工业领域的需求不断增加，在与金属部件相关的领域中具有特殊意义，因为它能够减轻结构重量，以最少的材料浪费生产复杂的几何形状。增材制造涉及不同的技术，必须根据材料的化学成分和最终要求仔细选择。大量研究致力于最终部件的技术开发和机械性能；然而，在不同服役条件下的腐蚀行为尚未得到太多关注。本文的目的是深入分析不同金属合金的化学成分、增材制造工艺及其腐蚀行为之间的相互作用，确定与这些特定工艺相关的主要微观结构特征和缺陷（如晶粒尺寸、偏析和孔隙率等）的影响。分析了通过增材制造（AM）获得的最常用体系（如铝合金、钛合金和双相不锈钢）的耐腐蚀性，以提供可作为材料制造新思想平台的知识。提出了一些关于建立与腐蚀试验相关良好实践的结论和未来指导方针。
