Preparation method of fiber-reinforced metal matrix composite material with directionally arranged fibers without intersection

A fiber-reinforced and cross-arranged technology, applied in the field of fiber-reinforced metal matrix composite material preparation, can solve the problems of affecting fatigue performance, reducing the performance of connectors, axial non-parallel, etc., to ensure fiber spacing and fiber volume fraction, optimize Mechanical properties, the effect of solving the performance reduction

Active Publication Date: 2019-07-19
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the process of preparing composite material connectors, the fibers are placed in bundles and placed directly into the metal sleeve, the fibers cannot be effectively arranged in an orientation, and a large number of crossing non-directional arrangements appear in the middle, and the crossing non-directional The arrangement will cause the following problems: ①The non-directional arrangement of the fibers will cause the fiber direction to be non-parallel to the axial direction of the connector, which will reduce the performance of the connector; Mechanical properties, which seriously affect the fatigue properties, such as figure 1

Method used

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  • Preparation method of fiber-reinforced metal matrix composite material with directionally arranged fibers without intersection
  • Preparation method of fiber-reinforced metal matrix composite material with directionally arranged fibers without intersection

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Embodiment 1

[0032] Select 2 μm of B 4 C+C double-coated SiC fiber, using physical vapor deposition method, aluminum alloy target, deposition temperature 100°C, pressure 0.5Pa, bias voltage -100V, deposition rate 5μm / h, deposition of aluminum alloy coating with a thickness of 20μm , wind the pioneer filament on the groove of the ring with a diameter of 100mm. The cross section of the groove is a semicircle with a diameter of 4mm. For together, put into a metal sleeve and carry out electron beam encapsulation. Fiber-reinforced metal matrix composites were molded by hot isostatic pressing. The molding temperature was 400°C, the pressure was 200MPa, and the heat preservation and pressure holding time was 60 minutes. 50% of connected parts.

Embodiment 2

[0034] Select 4 μm of B 4 C+C double-coated SiC fiber, using physical vapor deposition method, aluminum alloy target, deposition temperature 300°C, pressure 2Pa, bias voltage -500V, deposition rate 15μm / h, deposition of aluminum alloy coating with a thickness of 28μm, Wrap the pioneer filament on the groove of a ring with a diameter of 500mm. The cross section of the groove is a semicircle with a diameter of 20mm. The fiber is wound horizontally in one direction until it is level with the surface of the ring. Cut out two fiber segments with a length of 700mm and combine them into together, put into a metal sleeve for e-beam encapsulation. Fiber-reinforced metal matrix composites were molded by hot isostatic pressing. The molding temperature was 580°C, the pressure was 10, and the holding time was 5 hours. The composite material blank was prepared. The composite material had a diameter of 18 mm, a length of 700 mm, and a fiber volume fraction of 41. % connected components.

Embodiment 3

[0036]Select 1 μm C-coated SiC fiber, use physical vapor deposition method, titanium alloy target, deposition temperature 100°C, pressure 0.5Pa, bias voltage -100V, deposition rate 10μm / h, deposit 35μm thick titanium alloy coating Layer, wind the pioneer filament on the groove of the ring with a diameter of 200mm, the cross section of the groove is a semicircle with a diameter of 5mm, the fiber is wound flat in one direction, and wound to the same level as the surface of the ring, and two fiber segments with a length of 80mm are cut out. Fitted together, placed in a metal sleeve for e-beam encapsulation. Fiber-reinforced metal matrix composites were molded by hot isostatic pressing. The molding temperature was 900°C, the pressure was 120MPa, and the holding time was 2 hours. The composite material blank was prepared, and the composite material was prepared by processing with a diameter of 4.5mm, a length of 80mm, and a fiber volume fraction. 35% of connected parts.

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Abstract

The invention relates to a preparation method of a fiber-reinforced metal matrix composite material with directionally arranged fibers without intersection. The method comprises the steps of adoptinga meteorological deposition method for forming an interface barrier layer on a fiber surface; carrying out deposition on the fiber surface to form a metal coating; and winding pioneer yarn around a ring piece to obtain an annular fiber band with fibers which are arranged without intersection in a uniform and directional manner, fixing a fiber segment partially and cutting off or out the fiber segment, placing the fiber segment into a package sheathing to prepare a preformed body with directionally arranged fibers without intersection, and then making a blank part through electron beams and hotisostatic pressing. Therefore, the fiber-reinforced metal matrix composite material with the controllable volume fraction and directionally arranged fibers without intersection is obtained. Accordingto the preparation method of the fiber-reinforced metal matrix composite material with the directionally arranged fibers without intersection, the metal coating is formed on the fiber surface by adopting a physical meteorological deposition method, the volume fraction of the fibers is determined by the thickness of the metal coating, and preparation of the composite material with the high volumefraction is effectively guaranteed; and the method is simple in process, good in controllability, high in production efficiency, and beneficial for implementing preparation of high-performance fiber-reinforced metal matrix composite material connecting pieces.

Description

technical field [0001] The invention relates to the research field of metal-matrix composite materials. The invention relates to a method for preparing fiber-reinforced metal-matrix composite materials with fiber orientation and non-intersecting arrangement. The preparation method can prepare high-performance metal-matrix composite materials and connectors thereof. Background technique [0002] Fiber-reinforced metal matrix composites can combine the respective advantages of metal and SiC, and can simultaneously have excellent structural load-bearing functions, excellent thermal control functions, and unique anti-resonance functions. Utilizing the good bearing capacity of SiC and the excellent properties of high temperature resistance, corrosion resistance, wear resistance, high strength and high toughness of composite materials, it is widely used in aerospace, chemical industry, machinery and other fields. It combines metal plasticity, toughness and ceramics. The material h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/06C22C47/04C22C47/20C22C49/14C22C101/14
CPCC22C47/04C22C47/06C22C47/20C22C49/14
Inventor 黄浩王敏涓李虎黄旭李臻熙
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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