Shape Memory Alloys (SMAs) have revolutionized the materials engineering science due
to their super-elasticity (SE) and Shape Memory Effect (SME). They recover their shape upon heating
or by removing load. Nitinol is the most famous SMA but the research reveals that Ferrous based
Shape Memory Alloys (Fe-SMAs) have a great potential to be the counterpart of Nitinol. These Fe-
SMAs are effective due to their low cost, high cold workability, good weldability & excellent characteristics
comparing with Nitinol. Fe-Mn-Si SMAs have a great potential for civil engineering structures.
Further research is being conducted on SMAs to improve and impinge better attributes by improving
the material compositions and quantifying the SMA phase transition temperatures. In this
research, a detailed review of different types of biaxial loadings has been performed and Fe-SMA’s
publications and US Patents data related to different types of biaxial loading have been compared
with that of different linear elastic isotropic materials (e.g. Steel, Aluminium, and Copper) & nonlinear
smart materials (e.g. Nitinol). All the above-mentioned data and their comparison have also
been tabularized in this work. It has been observed that Publications and US Patents for different categories
of biaxial loadings of Fe-SMAs are negligible as compared to that of other linear elastic isotropic
materials and far less comparing with Nitinol. The keywords related to different biaxial loadings
of Fe-SMAs, do not exist at all in the title of the article but exist inside few articles. The histograms
have been drawn for a clear understanding of the results. It has been concluded that there must
be research investigating biaxial loading applications of these valuable Fe-SMAs.
Keywords: Biaxial, Fe-SMAs, SMA, Shape Memory Effect (SME), nitinol, non-linear materials.
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