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By John K. Tien

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The agreement between m p 29 II High-Strength Nonferrous Alloys the theoretically predicted values and the experimentally determined values is good. 3. Dispersion Strengthening Dispersions of noncoherent, hard particles can also be employed to strengthen metals and alloys for applications at high temperatures. In such alloys, both chemical and morphological stability are obtained by selecting a dispersoid with low solubilities and low diffusion rates of its components in the matrix, a high melting point, and a large negative free energy of formation (Bufferd, 1967).

3 usually form fiber composites with the minor constituent as the disĀ­ persed fiber phase. The grain structure of the unidirectionally solidified eutectic consists of large columnar grains aligned parallel to the growth direction. Consequently, the diffusional creep fields are virtually elimiĀ­ nated from the deformation mechanism maps for these alloys. The strength of a composite material is often based on the transfer of load from a ductile, relatively weak matrix phase to nondeformable fibers or plates.

9), correcting for the dislocation dynamics effect. Also shown are the yield stresses of the matrix and precipitate phases employed in the calculation. The agreement between m p 29 II High-Strength Nonferrous Alloys the theoretically predicted values and the experimentally determined values is good. 3. Dispersion Strengthening Dispersions of noncoherent, hard particles can also be employed to strengthen metals and alloys for applications at high temperatures. In such alloys, both chemical and morphological stability are obtained by selecting a dispersoid with low solubilities and low diffusion rates of its components in the matrix, a high melting point, and a large negative free energy of formation (Bufferd, 1967).

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