Nickel-based superalloy for missile launching device and manufacturing process of nickel-based superalloy for missile launching device

Abstract

The invention discloses a nickel-based superalloy for a missile launching device and a manufacturing process of the nickel-based superalloy for the missile launching device. The purposes of effectively solving the problem of low tensile strength and plasticity at 650 DEG C-700 DEG C, meeting the comprehensive performance requirements of the operating environment at instantaneous high temperature and high strength, and realizing industrial batch production are reached. According to the technical scheme, the nickel-based superalloy is selected, and tungsten, molybdenum and other strong solid solution elements are added; the best element ratio and a narrower composition range are designed for the chemical composition of nickle-chromium-molybdenum-tungsten alloy on the basis of the cost and comprehensive performance requirements; and reasonable smelting process and processing process are carried out. The nickel-based superalloy for the missile launching device and the manufacturing processof the nickel-based superalloy for the missile launching device have the beneficial effect that (1) the control of the composition determines the good thermal workability of the alloy, the deformation temperature range is relatively wide, the plastic thermal deformation is found at 950 DEG C-1160 DEG C, one-heating-number rolling is adopted for a finished square flat material, and the sufficientdeformation amount is retained to enable the product to achieve uniform microstructure; and (2) the tensile strength of the alloy at 700 DEG C is 1000 MPa-1200 MPa, the elongation after break is 16%-25%, the section shrinkage rate is 16%-30%, and a good verification result is obtained after long term use.

Description

technical field [0001] The invention belongs to the field of nickel-based high-temperature alloy materials, and relates to a nickel-based superalloy for a missile launching device and a manufacturing process thereof. The missile launching device is specifically an aviation missile guiding rudder sail. Background technique [0002] In the early stage, my country's research and development of alloy materials was applied to missile launchers to meet the use environment of instantaneous high temperature and high strength, replacing the original low-carbon alloy steel; according to the use environment of the equipment, it can instantly reach 600 ° C ~ 650 ° C, and the bearing strength is greater than 800 MPa. 12CrMn and other series materials are selected, but it cannot reach 800MPa in the use environment. The design of similar foreign materials does not choose a high alloy ratio, and the performance is low, which is mainly reflected in the low mechanical properties at high temper...

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Problems solved by technology

[0004] Design the optimal element ratio of the alloy, the smaller composition range; reasonable smelting technol

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