Design Of AM High-performance Shape Memory Alloy For Aerospace Applications

Authors:

Patrícia Freitas Rodrigues (University of Coimbra, Portugal)
Patrícia Freitas Rodrigues (University of Coimbra, Portugal)
Gonçalo Abrantes (University of Coimbra, Portugal)
Bernardo Alves (University of Coimbra, Portugal)
Ricardo Coelho (University of Coimbra, Portugal)
Daniel Gatões (University of Coimbra, Portugal)
Luís Cacho (University of Coimbra, Portugal)
Andersan Paula (IME- Instituto Militar de Engenharia, Brazil)
Rodolfo Batalha (ISQ – instituto de soldadura e qualidade, Portugal)
João Paulo Dias (IPN – Instituto Pedro Nunes, Portugal)
Sofia Ramos (University of Coimbra, Portugal)
Maria Teresa Vieira (University of Coimbra, Portugal)

Abstract:

The increasing demand for advanced materials that combine mechanical strength, corrosion resistance, thermal stability, and weight reduction has driven significant progress in the development of high-performance shape memory alloys (SMAs). These materials represent a category of metallic systems with the capacity to outperform traditional superalloys in demanding environments, such as those encountered in space. This study introduces the (Ti6Al4V)50Ni36Co14 alloy (non-equiatomic low-density alloy) designed for advanced structural applications. This alloy presents a density of approximately 5.2 g|cm³, positioning it as significantly lighter than conventional NiTi-based SMAs and other low-density high-performance alloys. Beyond its reduced weight, the (Ti6Al4V)50Ni36Co14 alloy demonstrates good mechanical and functional properties. Merging these attributes with the geometric freedom given by processing via additive manufacturing, this alloy stands as strong a candidate for applications in critical environments. This work explores the printability of the (Ti6Al4V)50Ni36Co14 alloy, opening pathways for further advancements in powder metallurgy and manufacturing technologies.

DOI:

https://doi.org/10.59499/EP256767869