Effect of Annealing Temperature on the Transformation Temperature and Texture of Ni₄₇Ti₄₄Nb₉ Cold-Rolled Plate

Abstract:

Transformation behaviors and texture of Ni47Ti44Nb9 cold-rolled plates were studied by differential scanning calorimetry and X-ray diffraction test. R phase transformation does not occur in Ni₄₇Ti₄₄Nb₉ cold-rolled plate annealed at 350°C-750°C followed by quenching into the water. Martensite transformation temperature first increases and then decreases with increment of annealing temperature, and the maximum achieves at 700°C. The heat of reverse martensite transformation increases, while hardness decreases as annealing temperature increases. The major texture of cold-rolled plate is {332} and spread from {332} to {110}. When the annealing temperature is above 600°C, the major textures are {332} and {111} recrystallization texture in secondary cold-rolled plate.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 1281-1287
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.1281
• Online since: July 2012
• Authors: Zhao Wei Feng, Xu Jun Mi, Jiang Bo Wang, Zhi Shan Yuan, Jin Zhou
• Keywords: Annealing, Cold-Rolled Plate, Ni₄₇Ti₄₄Nb₉ Shape Memory Alloy, Texture, Transformation Temperature

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