| 摘要 |
<p>The invention relates to components made of ductile metallic materials, and a method by which deformation, or strain acting upon this, are determined by means of sound emission analysis. For this, a material which is brittle at least in the under 400° temperature range is added in particle form to the ductile metallic material, which is preferably a weldable structural steel, but can also be a ductile light metal alloy (e.g. aluminium alloy), in order to heighten the sound emission behaviour. In this, the particles should be brittle at least in the application temperature range of the respective component, e.g. at room temperature. It is favourable if the particles are plastically ductile also in the transformation temperature range, so that a particular structure (prolate or needle-shaped) of the particles can be achieved, for example by strain hardening.</p> |
