Abstract:
There is provided a process for producing an intermetallic compound-based composite material containing a reinforcing material and an intermetallic compound. The process includes infiltrating a metal powder into the gaps of a reinforcing material to form a preform and impregnating the preform with an Al melt to give rise to a spontaneous combustion reaction between the metal powder and the Al melt to convert the Al melt into an aluminide intermetallic compound. The Al melt and the metal powder are used in such amounts that they do not remain after the spontaneous combustion reaction. The process can produce an intermetallic compound-based composite material of large size and complicated shape in reduced steps.
Abstract:
A method of manufacturing a fibre reinforced metal matrix composite article, the method comprising placing metal coated (18) fibres (14) between a first metal ring (30) and a second metal ring (36). Each of the metal-coated (18) fibres (14) having a glue (22) to hold the metal-coated (18) fibres (14) in position. A solvent is supplied to the glue (22) on the metal-coated (18) fibres (14) to soften the glue (22) and pressure is applied to allow the metal-coated (18) ceramic fibres (14) to become more closely packed. Thereafter the glue (22) is removed and the metal coated (18) fibres (14) and first and second metal rings (30, 32) are consolidated and diffusion bonded together.
Abstract:
This invention relates to a process for manufacturing composites and laminates reinforced with continuous or long fibers and/or filaments. The process includes the subsequent steps of (a) forming a preform of reinforcing material by arranging a green tape, ribbon, sheet or cloth including a number of continuous longitudinally oriented fibers or filaments which are spaced from each other by uniformly distributed particles, bonded by a flexible binder, (b) removing or converting a major portion of the binder into matrix material and, if applicable, (c) filling the voids and cavities with matrix material. Further, this invention relates to a process for manufacturing composites and laminates reinforced with chopped-aligned fibers and/or filaments, which includes chopping a green tape or ribbon as defined above, mixing the chopped tape or ribbon with a binder, lubricant and/or matrix material and forming mouldings from this mixture by any moulding method.
Abstract:
A method of manufacturing an article by diffusion bonding at least two metal components (30,36) comprises assembling the metal components (30,36) into a stack relative to each other so that the surfaces (34,40) are in mating contact. The edges of the metal components (30,36) are sealed together, except for an aperture (49) where a pipe (50) is to be connected. A connector (51) has a first end (52) and a second end (53). The first end (52) has a smaller diameter than the second end (53) and a bore (54) extends through the connector (51) from the first end (52) to the second end (53). The second end (53) of the connector (51) is joined (57) to the stack. The pipe (50) is joined (58) to the first end (52) of the connector (51). The interior of the sealed assembly is evacuated via the pipe (50) and the pipe is sealed. Heat and pressure are applied to diffusion bond the metal components (30,36) together to form an integral structure. The connector (51) reduces the possibility of failure of the pipe (50) and/or seal (57) during diffusion bonding.
Abstract:
A method of manufacturing a fibre reinforced metal matrix composite article, the method comprising placing at least one metal coated (18) fibre (14) between a first metal ring (30) and a second metal ring (36). Heating to a first temperature and applying a first pressure to partially consolidate the metal (18) on the at least one metal coated (18) fibre (14) and heating to a second temperature and applying a second pressure to consolidate the metal of the first and second metal rings (30, 36), wherein the first temperature is different to the second temperature and the first pressure is different to the second pressure.
Abstract:
The present invention provides a method for fabricating a metal matrix composite having high specific strength and stable performance and capable of fabricating at low cost, the method comprising heating a preform of metal matrix with reinforcing fiber to the temperature, which is below the high temperature region, of low temperature region or medium temperature region of the plastic deformation temperature of the metal matrix in a pressure vessel having an initial processing pressure and keeping for a predetermined time for a preparative treatment before the step of hot-isostatic-pressing the preform by keeping at a high temperature region capable of HIP treatment and of diffusing welding temperature of the metal matrix in a pressure vessel; for instance, in case metal matrix is titan or titan alloy, the preparative treatment is conducted at a preparative treatment temperature of about 300° C. to 700° C. and at a pressure in the pressure vessel of about 30 to 100 kg/cm2.
Abstract translation:本发明提供一种制造具有高比强度和稳定性能并能够以低成本制造的金属基质复合材料的方法,该方法包括用增强纤维将金属基体的预成型件加热至低于高温区域的温度 在具有初始处理压力的压力容器中的金属基体的塑性变形温度的低温区域或中等温度区域,并且在保持预热的步骤之前保持预定时间进行制备处理 在能够进行HIP处理的高温区域和在压力容器中扩散金属基体的焊接温度; 例如,在金属基质是钛或钛合金的情况下,制备处理在约300℃至700℃的制备处理温度下进行,并且在压力容器中的压力为约30至100kg / cm <2>。
Abstract:
A cast article from an aluminum alloy has improved mechanical properties at elevated temperatures. The cast article has the following composition in weight percent: Silicon 6.0-25.0, Copper 5.0-8.0, Iron 0.05-1.2, Magnesium 0.5-1.5, Nickel 0.05-0.9, Manganese 0.05-1.2, Titanium 0.05-1.2, Zirconium 0.05-1.2, Vanadium 0.05-1.2, Zinc 0.05-0.9, Strontium 0.001-0.1, Phosphorus 0.001-0.1, and the balance is Aluminum, wherein the silicon-to-magnesium ratio is 10-25, and the copper-to-magnesium ratio is 4-15. The aluminum alloy contains a simultaneous dispersion of three types of Al3X compound particles (X=Ti, V, Zr) having a L12 crystal structure, and their lattice parameters are coherent to the aluminum matrix lattice. A process for producing this cast article is also disclosed, as well as a metal matrix composite, which includes the aluminum alloy serving as a matrix containing up to about 60% by volume of a secondary filler material.
Abstract:
A method of manufacturing a fibre reinforced metal matrix composite article (10) comprises forming an annular groove (32) in the first metal component (30), forming a second metal component (36) and forming a number of fibre preforms (20). The fibre preforms (20) are placed in an annular channel (80) in a cassette (70). The cassette (70) and the first metal component (30) are arranged such that the annular channel (80) in the cassette (70) is coaxial with and faces the annular groove (32) in the first metal component (30). The fibre preforms (20) are moved from the annular channel (80) in the cassette (70) to the annular groove (32) in the first metal component (30). The second metal component (36) is placed on the first metal component (30) such that the fibre preforms (20) are arranged between the first metal component (30) and the second metal component (36). The second metal component (36) is sealed to the first metal component (30). Heat and pressure is applied such as to consolidate the fibre preforms (20) and to diffusion bond the filler metal, the first metal component (30) and the second metal component (36) to form a unitary composite component.
Abstract:
An aluminum based composite material includes a matrix and a reinforcing material. The matrix mainly contains aluminum and contains magnesium. The reinforcing material is constituted of whisker and nitriding short fiber which is treated by nitriding process. The reinforcing material is dispersedly contained in the matrix. The aluminum based composite material has a high thermal resistance.