TRANSFORMATION BEHAVIOR OF NITI SHAPE MEMORY ALLOYS TREATED BY THERMOMECHANICAL PROCESSING USING DSC

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SHAHMIR H.; NILI AHMAD ABADI M.; NAGHDI F.

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING Year:2008 | Volume:5 | Issue:4 Page(s): 0-0

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Title

TRANSFORMATION BEHAVIOR OF NITI SHAPE MEMORY ALLOYS TREATED BY THERMOMECHANICAL PROCESSING USING DSC

Author(s)

SHAHMIR H. | NILI AHMAD ABADI M. | NAGHDI F.

Keywords

NITI

SHAPE MEMORY ALLOY

THERMO MECHANICAL TREATMENT

COLD WORKING

ANNEALING

DSC

Abstract

In the present study the effect of thermo mechanical treatment (cold work and annealing) on the transformation behavior of NiTi shape memory alloys was studied. Differential scanning calorimetry was used to determine transformation temperature and its relation to precipitates and defects. Three alloys including Ti-50.3at.% Ni, Ti-50.5at.% Ni (reclamated orthodontic wires) and 50.6at.% Ni alloy were annealed at 673 K and 773 K for 30 and 60 min after 15% cold rolling. It was found that the transformation characteristics of these alloys are sensitive to annealing treatment and composition. The temperature range of transformation is broadened during cold working and after subsequent annealing, the intermediate phase was appeared. The peaks become sharper and close together on each cooling and heating cycle with increasing annealing temperature and time.

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APA: Copy

SHAHMIR, H., NILI AHMAD ABADI, M., & NAGHDI, F.. (2008). TRANSFORMATION BEHAVIOR OF NITI SHAPE MEMORY ALLOYS TREATED BY THERMOMECHANICAL PROCESSING USING DSC. IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING, 5(4), 0-0. SID. https://sid.ir/paper/276714/en

Vancouver: Copy

SHAHMIR H., NILI AHMAD ABADI M., NAGHDI F.. TRANSFORMATION BEHAVIOR OF NITI SHAPE MEMORY ALLOYS TREATED BY THERMOMECHANICAL PROCESSING USING DSC. IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING[Internet]. 2008;5(4):0-0. Available from: https://sid.ir/paper/276714/en

IEEE: Copy

H. SHAHMIR, M. NILI AHMAD ABADI, and F. NAGHDI, “TRANSFORMATION BEHAVIOR OF NITI SHAPE MEMORY ALLOYS TREATED BY THERMOMECHANICAL PROCESSING USING DSC,” IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING, vol. 5, no. 4, pp. 0–0, 2008, [Online]. Available: https://sid.ir/paper/276714/en

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