Which of the following statements best explains why equilibrium cooling of a liquid alloy of eutectic composition beyond the eutectic temperature yields a microstructure consisting of alternating layers of two solid phases. O The solidification process is dependent upon physical rearrangement of atoms across small length scales. O Solidification of an alloy with eutectic composition is diffusion-dependent and occurs at a single temperature. O The two solid phases produced from solidification of an alloy with eutectic composition have drastically different chemical compositions. O Since the process is diffusion-dependent and occurs across a narrow temperature range, alternating layers are produced because the diffusion path length is minimal.

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Which of the following statements best explains why equilibrium cooling of a liquid alloy of eutectic
composition beyond the eutectic temperature yields a microstructure consisting of alternating layers
of two solid phases.
The solidification process is dependent upon physical rearrangement of atoms across small length scales.
Solidification of an alloy with eutectic composition is diffusion-dependent and occurs at a single temperature.
O The two solid phases produced from solidification of an alloy with eutectic composition have drastically
different chemical compositions.
Since the process is diffusion-dependent and occurs across a narrow temperature range, alternating layers are
produced because the diffusion path length is minimal.
Transcribed Image Text:Which of the following statements best explains why equilibrium cooling of a liquid alloy of eutectic composition beyond the eutectic temperature yields a microstructure consisting of alternating layers of two solid phases. The solidification process is dependent upon physical rearrangement of atoms across small length scales. Solidification of an alloy with eutectic composition is diffusion-dependent and occurs at a single temperature. O The two solid phases produced from solidification of an alloy with eutectic composition have drastically different chemical compositions. Since the process is diffusion-dependent and occurs across a narrow temperature range, alternating layers are produced because the diffusion path length is minimal.
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