Cold rolling and annealing preparation method of high-tungsten high-cobalt nickel alloy ultra-fine grain panel

Abstract

The invention relates to a cold rolling and annealing preparation method of a high-tungsten high-cobalt nickel alloy ultra-fine grain panel, and belongs to the technical field of metal materials. An alloy is prepared from the components in percentage by weight: 25 to 45 percent of tungsten, 15 to 25 percent of cobalt, and the balance nickel and residual elements. The method comprises the preparation processes of adopting a cold rolling and annealing alternate repeating deformation path, wherein the cold-rolling deformation amount per pass is 20 to 45 percent, and the cold-rolling deformation amount of the last pass is larger than or equal to 25 percent; and annealing a panel veneer cold-rolled per pass in the middle, wherein the annealing temperature is 850 to 1100 DEG C, and the annealingtime is 30 to 150min. According to the cold rolling and annealing preparation method of the high-tungsten high-cobalt nickel alloy ultra-fine grain panel provided by the invention, the high-tungstenhigh-cobalt nickel alloy ultra-fine grain panel is prepared through a cold rolling and annealing way; and the obtained panel is uniform in deformation, has no defect such as surface cracks, has a tinyinner grain structure with the grain size grade being not lower than 7 grade, has an ideal microscopic structure and an excellent mechanical property in each direction, has a grain size grade difference not exceeding 2 grades, has the ductility reaching to 76 percent, the tensile strength reaching to 995MPa and the yield strength reaching to 588MPa, and is capable of meeting the requirements of multiple product production processes such as follow-up die forging, rocking-rolling, punching and spinning on the panel.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to a cold-rolling and annealing preparation method of a high-tungsten, high-cobalt-nickel alloy ultrafine-grain plate. Background technique [0002] The shaped-charge warhead is a penetrating body with center-of-mass velocity and structural shape that is forged through the concentrated-energy detonation of explosives to crush and deform the charge-type cover by using the charge principle, and the charge-type cover is lined with the In the concave cavity of the charge structure, it is compressed by the explosive detonation wave to form a special material part of the high-energy concentrated jet. Shaped jet has the characteristics of high energy density and strong directionality, and has a good ability to penetrate hard targets. It is widely used in military and civilian fields such as anti-armor weapon warheads, oil exploration, and penetrating buildings. [0003] Research ins...

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Problems solved by technology

So far, no research on high-tungsten, high-cobalt-nickel alloys has been found in China, let alone research on cold-rolled annealing preparation methods and grain uniformity control

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