Properties of Ni-Rich NiTi Alloys Produced by Powder Metallurgy Route

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This paper presents the processing of Nickel Titanium (NiTi) alloy from elemental powders of Nickel and Titanium by conventional powder metallurgy process. Two batches of feedstock containing 2 different formulations (1) Ti-50.4at% Ni and (2) Ti-50.8at% Ni were prepared. The feedstocks for each composition were warm-pressed and subsequently sintered in vacuum at 1150°C. Based on the XRD result, it clearly showed that the conventional sintering following warm-press method is promising in producing greater amount of the predominant NiTi (B2) phase and a minor fraction of martensitic NiTi (B19’) phase. The reversible phase transformation and the microstructure of the sintered samples have also been observed and discussed.

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Abdul Hadi, Fazlena Hamzah and Miradatul Najwa Mohd Rodhi

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116-121

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R. Razali et al., "Properties of Ni-Rich NiTi Alloys Produced by Powder Metallurgy Route", Advanced Materials Research, Vol. 1113, pp. 116-121, 2015

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July 2015

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