Separation of the Martensite in TiNi Fiber Reinforced Aluminum Matrix Composite

Abstract

Abstract: The reverse martensitic transformation of TiNi shape memory alloy fibers embedded in a pure aluminum matrix was studied in this paper. Results showed that the phase composition of the TiNi alloy fibers prior to prestraining at the room temperature had a significant influence on the differential scanning calorimetry (DSC) results of the composites. By a comparison to the high temperature X-ray diffraction (XRD) results, it was confirmed that the martensite was divided into two groups: the self-accommodating martensite (SAM) and the preferentially oriented martensite (POM). The evolving process of the separation of martensite was discussed.

Key words: Shape memory alloy, TiNi, Composite, Martensitic transformation

Yanjun ZHENG, Lishan CU, IYan LI, Dazhi YANG. Separation of the Martensite in TiNi Fiber Reinforced Aluminum Matrix Composite[J]. J Mater Sci Technol, 2004, 20(04): 390-394.

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