Abstract:
A method of forming bulk metallic glass engineering materials, and more particularly a method for forming coarsening microstructures within said engineering materials is provided. Specifically, the method forms 'designed composites' by introducing 'soft' elastic/plastic inhomogeneities in a metallic glass matrix to initiate local shear banding around the inhomogeneity, and matching of microstructural length scales (for example, L and S) to the characteristic length scale Rp (for plastic shielding of an opening crack tip) to limit shear band extension, suppress shear band opening, and avoid crack development.
Abstract:
Verfahren (S1-S15) zum Herstellen eines Refraktärmetall-Bauteils, wobei das Verfahren folgende Schritte aufweist: Bereitstellen (S4) eines Ausgangsmaterials (M), welches ein Refraktärmetall-Pulver aus mindestens einem Refraktärmetall und/oder einer Verbindung davon sowie mindestens einen Binder aufweist; und Urformen (S5-S7) des Ausgangsmaterials (M) zu mindestens einem Grünkörper (4); wobei das Ausgangsmaterial (M) Keramikpulver aufweist. Ein Refraktärmetall-Bauteil ist mittels des Verfahrens (S1-S15) hergestellt worden. Die Erfindung ist insbesondere anwendbar auf Röntgenröhren oder Fusionsreaktoren, insbesondere für eine Oberfläche einer Röntgenanode bzw. eine Wand eines Fusionsreaktors.
Abstract:
A method of forming bulk metallic glass engineering materials, and more particularly a method for forming coarsening microstructures within said engineering materials is provided. Specifically, the method forms 'designed composites' by introducing 'soft' elastic/plastic inhomogeneities in a metallic glass matrix to initiate local shear banding around the inhomogeneity, and matching of microstructural length scales (for example, L and S) to the characteristic length scale Rp (for plastic shielding of an opening crack tip) to limit shear band extension, suppress shear band opening, and avoid crack development.
Abstract:
The present invention is related to a family of materials that may act as a replacement for lead in applications where the high density of lead is important, but where the toxicity of lead is undesirable. The present invention more particularly provides a high density material comprising tungsten, fiber and binder. Methods and compositions of such materials and applications thereof are disclosed herein.