A multilayer composite bonding material with a plurality of thermal stress compensation layers is provided. The plurality of thermal stress compensation layers include a metal core layer, a pair of particle layers extending across the metal core layer such that the metal core layer is sandwiched between the pair of particle layers, and a pair of metal outer layers extending across the pair of particle layers such that the pair of particle layers are sandwiched between the pair of metal outer layers. A pair of low melting point (LMP) bonding layers extend across the pair of metal outer layers. The metal core layer, the pair of particle layers, and the pair of metal outer layers each have a melting point above a transient liquid phase (TLP) sintering temperature, and the pair of LMP bonding layers each have a melting point below the TLP sintering temperature.

An improved aluminum alloy powder metal includes silicon additions. When this improved powder metal with silicon additions is sintered to form a sintered component, the resultant component exhibits many improved mechanical strength properties and improved thermal resistance.

An improved aluminum alloy powder metal includes silicon additions. When this improved powder metal with silicon additions is sintered to form a sintered component, the resultant component exhibits many improved mechanical strength properties and improved thermal resistance.

A cemented carbide comprising 55-90 parts by mass of WC particles, and 10-45 parts by mass of an Fe-based binder phase, the binder phase having a composition comprising 2.5-10% by mass of Ni, 0.2-1.2% by mass of C, 0.5-5% by mass of Cr, 0.2-2.0% by mass of Si, 0.1-3% by mass of W, 0-5% by mass of Co, and 0-1% by mass of Mn, the balance being substantially Fe and inevitable impurities, and the cemented carbide being substantially free from composite carbides having major axes of 5 m or more. This cemented carbide is produced by cooling at a cooling rate of 60 C./hour or more between 900 C. and 600 C., after vacuum sintering.

A cemented carbide comprising 55-90 parts by mass of WC particles, and 10-45 parts by mass of an Fe-based binder phase, the binder phase having a composition comprising 2.5-10% by mass of Ni, 0.2-1.2% by mass of C, 0.5-5% by mass of Cr, 0.2-2.0% by mass of Si, 0.1-3% by mass of W, 0-5% by mass of Co, and 0-1% by mass of Mn, the balance being substantially Fe and inevitable impurities, and the cemented carbide being substantially free from composite carbides having major axes of 5 m or more. This cemented carbide is produced by cooling at a cooling rate of 60 C./hour or more between 900 C. and 600 C., after vacuum sintering.

The present disclosure is directed to methods of preparing permanent magnets having improved coercivity and remanence, the method comprising: (a) homogenizing a first population of particles of a first GBM alloy with a second population of particles of a second alloy to form a composite alloy preform, the first GBM alloy being represented by the formula: AC.sub.bR.sub.xCo.sub.yCu.sub.dM.sub.z, the second alloy being represented by the formula G.sub.2Fe.sub.14B, where AC, R, M, G, b, x, y, and z are defined; (b) heating the composite alloy preform particles to form mixed alloy particles; (c) compressing the mixed alloy particles, under a magnetic field of a suitable strength to align the magnetic particles with a common direction of magnetization and inert atmosphere, to form a green body; (d) sintering the green body; and (e) annealing the sintered body. Embodiments include magnets comprising neodymium-iron-boron core alloys, including Nd.sub.2Fe.sub.14B.

The disclosure describes assemblies, systems, and techniques for reinforcing complex geometries of pressure vessels using a pre-sintered preform (PSP) braze material that includes a low-melt powder and a high-melt powder. An example technique includes positioning a PSP reinforcement on a surface of a substrate. The technique includes heating the PSP reinforcement to soften or melt at least one constituent metal or alloy of the low-melt powder. During heating, the PSP reinforcement is configured to conform to a contour of the surface of the substrate. The technique also includes cooling the PSP reinforcement to define a reinforced component.

The disclosure describes assemblies, systems, and techniques for reinforcing complex geometries of pressure vessels using a pre-sintered preform (PSP) braze material that includes a low-melt powder and a high-melt powder. An example technique includes positioning a PSP reinforcement on a surface of a substrate. The technique includes heating the PSP reinforcement to soften or melt at least one constituent metal or alloy of the low-melt powder. During heating, the PSP reinforcement is configured to conform to a contour of the surface of the substrate. The technique also includes cooling the PSP reinforcement to define a reinforced component.

The present invention relates to a cemented carbide and coated cemented carbide which contain free carbons, and provides a cemented carbide which enables to remove or reduce the disadvantages of the free carbons even if the cemented carbide contains the free carbons, specifically to decrease in the strength is reduced by finely dispersing the free carbons even if the cemented carbide contains the free carbons and to obtain a beautiful mirror surface on a mirror-finished surface by finely dispersing free carbons in the cemented carbide. The present invention is a cemented carbide composed of tungsten carbide (WC) and cobalt (Co), which contains carbon in such an amount range that no solid carbon is contained in a liquid phase while the liquid phase is present at a high temperature, characterized in that the maximum diameter of the pores resulting from the free carbons is 20 m or smaller.

The present invention relates to a cemented carbide and coated cemented carbide which contain free carbons, and provides a cemented carbide which enables to remove or reduce the disadvantages of the free carbons even if the cemented carbide contains the free carbons, specifically to decrease in the strength is reduced by finely dispersing the free carbons even if the cemented carbide contains the free carbons and to obtain a beautiful mirror surface on a mirror-finished surface by finely dispersing free carbons in the cemented carbide. The present invention is a cemented carbide composed of tungsten carbide (WC) and cobalt (Co), which contains carbon in such an amount range that no solid carbon is contained in a liquid phase while the liquid phase is present at a high temperature, characterized in that the maximum diameter of the pores resulting from the free carbons is 20 m or smaller.