Manufacture method of aluminium boron alloy board for nuclear power

Abstract

A provided manufacture method of an aluminium boron alloy board for nuclear power comprises the following steps: step 1, powder metallurgy: 65% by mass percent of a 6061 aluminium alloy and 35% by mass percent of a boron carbide powder are employed for powder metallurgy, and an aluminium boron alloy flat ingot with an elliptical section is prepared, wherein the elliptical section has a semi-major axis of 110 mm and a semi-minor axis of 30 mm; step 2, extrusion moulding: the flat ingot is placed in a flat extrusion container and is extruded to form a board with a rectangular section, wherein the rectangular section has a length of 200 mm and a width of 3 mm; step 3, rolling and flattening: the extrusion moulded board is rolled for removing of extrusion-caused mixed waste materials of aluminium and the aluminium boron alloy; and step 4, surface treatment: the board is subjected to oxidation treatment. The extrusion moulding of the aluminium boron alloy board can be guaranteed, and the production quality of the aluminium boron alloy board is improved.

Description

technical field [0001] The invention relates to a method for manufacturing an aluminum-boron alloy plate for nuclear power. Background technique [0002] Although boron carbide is an ideal neutron absorber in nuclear power plants, the defects of boron carbide itself, such as low fracture toughness, high sintering temperature, poor oxidation ability and poor stability to metals, limit its application. The aluminum material has good toughness, light material, easy ductility, corrosion resistance, and strong plasticity. The metal composite material made of aluminum alloy as the carrier and boron carbide as the neutron absorber can ensure the neutron absorption performance. , and has the characteristics of light weight, high strength, and high toughness. It is an ideal material for nuclear power applications. Aluminum alloys added with boron carbide will form aluminum-boron alloys, which are difficult to extrude. Judging the extrusion molding of a material There are two factor...

AI Technical Summary

Problems solved by technology

[0002] Although boron carbide is an ideal neutron absorber in nuclear power plants, the defects of boron carbide itself, such as low fracture toughness, high sintering temperature, poor oxidation ability and poor stability to metals, limit its application

The aluminum material has good toughness, light material, easy ductility, corrosion resistance, and strong plasticity. The metal composite material made of aluminum alloy as the carrier and boron carbide as the neutron absorber can ensure the neutron absorption performance. , and has the characteristics of light weight, high strength, and high toughness. It is an ideal material for nuclear power applications. Aluminum alloys added with boron carbide will form aluminum-boron alloys, which are difficult to extrude. Judging the extrusion molding of a material There are two factors in the difficulty, one is the extrudability of the material, and the other is the extrusion ratio. Aluminum-boron alloy itself is a material with low extrudability. It is difficult to extrude a round ingot with a circular cross-section into a plate. It can be concluded from the experiment that the cross-section is a circle with a diameter of 178 mm, and it can be extruded into a cross-section with a length of 100 mm and a width of 100 mm. 3mm rectangle; the cross-section is a circle with a diameter of 120mm, which can be extruded into a rectangle with a length of 100mm and a width of 5mm or a rectangle with a length of 100mm and a width of 8mm; but if the cross-section is a circle with a diameter of 220mm, it can be extruded into a cross-section with a length of 200mm A rectangle with a width of 3 mm is difficult to extrude due to its high extrusion ratio