Effects of Ta Addition on Microstructure and Transformation Behavior of Ni-Ti Alloys

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J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (01): 5-6.

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Effects of Ta Addition on Microstructure and Transformation Behavior of Ni-Ti Alloys

K.H.Wu, JL.Ma

Department of Mechanical Engineering, Florida International University, Miami, FL 33174, U.S.A

Received:2000-04-25 Revised:1900-01-01 Online:2001-01-28 Published:2009-10-10
Contact: K.H.Wu

Abstract

Abstract: The effect of adding Ta on the changes of microstructure and M-s temperature of a dual-phase shape memory alloy with compositions of (Ni51Ti49)(1-x)Ta-x and Ni50Ti50-yTay, were systematically studied. An optical microscope, SEM, X-ray diffraction and DSC were utilized in this work. The evolution of the microstructure as a function of Ta content was characterized. The variation of the Ni/Ti ratio in the NiTi phase plays an important role in the change of the M-s temperatures due to the addition of Ta. A pseudobinary NiTi-Ta phase diagram was proposed based on these results.

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K.H.Wu, JL.Ma. Effects of Ta Addition on Microstructure and Transformation Behavior of Ni-Ti Alloys[J]. J Mater Sci Technol, 2001, 17(01): 5-6.

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Effects of Ta Addition on Microstructure and Transformation Behavior of Ni-Ti Alloys

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