Electron microscopy and diffraction of ordering in a Ni-25wt.% Mo alloy

Mishra, N. S. ; Ranganathan, S. (1992) Electron microscopy and diffraction of ordering in a Ni-25wt.% Mo alloy Materials Science and Engineering A, 150 (1). pp. 75-85. ISSN 0921-5093

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/092150...

Related URL: http://dx.doi.org/10.1016/0921-5093(90)90010-Z

Abstract

Electron microscopy and diffraction were employed to study the disorder-order change in a Ni-25wt.%Mo alloy in the temperature range 680-880°C. In addition to confirmation about the presence of microstructure and clusters in the state of short-range order and the occurrence of metastable Ni2Mo and Ni4Mo phase, the present study has enabled the construction of a time-temperature-transformation curve. It is also shown that the change from f.c.c. solid solution to ordered h.c.p. Ni3Mo proceeds through nucleation and growth and not by shear.

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