Abstract
Radiation may affect the course of a phase transformation in many ways, ranging from such a simple effect as enhanced diffusion or solute segregation to more complex effects such as dissolving thermally stable precipitates, inducing compositional instabilities, or altering phase boundaries. In the case of Invar-type Fe-35Ni-XCr alloys, irradiation-enhanced diffusion of all elements and segregation of nickel at sinks accelerate and make observable a spinodal reaction otherwise observable only after extended thermal annealing. Moreover, irradiation apparently also expands the boundaries of the miscibility gap. Irradiation may also be used to obtain structures unattainable thermally, even through such techniques as rapid quenching from the vapor or liquid.
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This paper is based on a presentation made in the symposium “Irradiation-Enhanced Materials Science and Engineering” presented as part of the ASM INTERNATIONAL 75th Anniversary celebration at the 1988 World Materials Congress in Chicago, IL, September 25–29, 1988, under the auspices of the Nuclear Materials Committee of TMS-AIME and ASM-MSD.
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Russell, K.C., Garner, F.A. Radiation as a tool in understanding phase transformations. Metall Trans A 21, 1073–1082 (1990). https://doi.org/10.1007/BF02656528
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DOI: https://doi.org/10.1007/BF02656528