University of Cambridge > Talks.cam > Physics and Chemistry of Solids Group > Can we design fatigue-resistant alloys?

Can we design fatigue-resistant alloys?

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Better understanding of the origin and behaviour of fatigue cracks should lead to improved engineering design and alloying strategies for structural metals. The surface stresses caused by persistent slip bands, including a zone of infinite tensile stress at the edge of each band, seem an inevitable consequence of elastic non-linearity and hard to combat, except perhaps by the present expensive methods of shot-peening or surface removal. But the underlying process of jog movement to eliminate screw dislocation dipoles should be susceptible to control. It is important to understand better the main engineering problem: is design against persistent slip the metallurgist’s answer to crack-proof rotating machinery?

This talk is part of the Physics and Chemistry of Solids Group series.

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