Austenite stability in Fe-Mn-Si based shape memory alloysFaculty of Engineering - Papers (Archive)
AbstractThe stability of austenite in a number of Fe–Mn–Si-based shape memory alloys has been investigated. It was found that a grain boundary precipitate of BCC structure is formed over a wide range of alloy compositions and heat treatment temperatures. This grain boundary phase has been identified as the chi (χ) phase. Although up to 3 vol.% of the grain boundary precipitate was generated by isothermal aging in the range 500–800 °C, it was found not to markedly affect the mechanical properties or the shape memory effect. Nano-indentation indicated that the hardness and strength of the parent and precipitate phase are very similar, as are their compositions.
Citation InformationNicole Stanford, Druce P. Dunne and Brian J. Monaghan. "Austenite stability in Fe-Mn-Si based shape memory alloys" (2007) p. 107 - 115
Available at: http://works.bepress.com/bmonaghan/8/