The Cr-Ni-Ti (chromium-nickel-titanium) system-update
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The Cr-Ni-Ti (Chromium-Nickel-Titanium) System—Update K.P. Gupta, The Indian Institute of Metals
Introduction
Binary and Ternary Phases
The Cr-Ni-Ti system has been reviewed by [1990Gup]. Only one experimental investigation at the Ni corner of the ternary system reported the face-centered cubic (fcc) ␥ phase boundaries at 700, 1000, and 1150 °C. Further work has subsequently been done in the Cr-Ni-Ti system; the results are reported here.
The binary phases and their structure data have been given in an earlier review [1990Gup]. No ternary intermediate phase is known to occur in the Cr-Ni-Ti system.
Binary Systems The binary systems Cr-Ni, Cr-Ti, and Ni-Ti have been reviewed earlier by [1987Mur], [1991Nas], and [1990Gup]. The essential features of the binary diagrams are given here. The Cr-Ni system [1991Nas] (Fig. 1) is a simple eutectic system with liquid in equilibrium at 1345 °C between an extensive fcc ␥ phase (Ni terminal solid solution) region and a somewhat less extensive (especially at the lower temperatures) body-centered cubic (bcc) ␣ phase (Cr terminal solid solution) region. At
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