Abnormal grain growth in Fe–Mn–Al–Ni shape memory alloy with higher Al content. (October 2020)

• Record Type: Journal Article
• Authors: Xia, Ji; Omori, Toshihiro; Kainuma, Ryosuke
• Is Part Of: Scripta materialia. Number 187(2020)
• Page Start: 355
• Page End: 359
• Publication Date: 2020-10
• Subjects: Abnormal grain growth -- Shape memory alloy -- Microstructure -- Superelasticity; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.06.044
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The effect of Al content on the abnormal grain growth of Fe–Mn–Al–Ni shape memory alloy is investigated in comparison with the previously reported Fe–Mn–Al–Ni–Ti alloy. Microstructural observations revealed that compared with 1.5Ti, 17Al (adding 2 at.% Al to the conventional Fe–Mn–Al–Ni) showed the potential to grow into a large single crystal. The obtained results indicate that the size control of the second phase, which can be achieved not only by introducing Ti, but rather universally by stabilizing BCC phase, and the resultant subgrain structure are vital for abnormal grain growth. Graphical abstract: Image, graphical abstract