Strength Versus Temperature Anomalies in Metals

David Fisher

2015년 10월 · Trans Tech Publications Ltd

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Perhaps the best-known aspect of the behavior of metals, and indeed of most materials, is that they weaken with temperature. This weakening is however a problem in some applications. Only tungsten for instance, with its naturally high melting-point, was suitable for the manufacture of the filaments of incandescent light-bulbs. Even then, it was necessary to add oxide particles having a yethigher melting-point in order to prevent the weakening effect of grain-growth. These are alloys however which can be said to be weakened by heat, but nevertheless ‘hang on’ to enough strength to perform their task. The real boon would be an alloy which actually, as it were, ‘rose to the occasion’. Such a class of alloy exists, and is the subject of this book. It brings together everything which is known about the yield strength anomaly; both theoretically and experimentally.