19 By Reducing The Grain Size The Strength Of

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19. By reducing the grain size, the strength of materials increases. This is because (a) The amou…

19. By reducing the grain size, the strength of materials increases. This is because (a) The amount of grain boundary decreases and any dislocation motion requires only a short distance before encountering a grain boundary. (b) The amount of grain boundary increases and dislocation motion requires a long distance before encountering a grain bound (c) The amount of grain boundary increases and dislocation motion requires a short distance before encountering a grain boundary (d) None of the above.

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