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Preparation method of nickel-chromium-iron-cobalt base deformed superalloy wire

A technology for deformed superalloys and cobalt alloys, which is applied in the field of nickel-chromium-iron-cobalt-based deformed superalloy wire preparation, can solve the problems of low purity and large residual stress, and achieve simple process, high residual stress and low cost. low effect

Active Publication Date: 2021-07-16
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low purity, large residual stress, and metallurgical defects in high-quality deformed superalloy wires used in the field of additive manufacturing, the present invention proposes a method for preparing nickel-chromium-iron-cobalt-based deformed superalloy wires , help to improve the quality level and performance stability of superalloy parts manufactured by additive manufacturing, and meet the needs of aero-engine parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The designed nickel-chromium-cobalt-iron alloy for arc microcasting and forging additive manufacturing is Ni: 53.0%; Cr: 19.4%; Fe: 9.0%; Co: 8.0%; Al: 1.2%; Ti: 0.5%; Nb : 5.2%; W: 1.0%; Mo: 2.5%; C: 0.01%; P: 0.005%; B: 0.004%; Si: 0.1%; Electronic scales are used for alloy batching. Among them, metal Ni plate is Jinchuan No. 0 nickel (purity ≥ 99.9%), metal Cr uses low-nitrogen electrolytic chromium, Fe is high-purity iron (purity ≥ 99.9%); vacuum induction melting furnace is used to prepare alloy consumable electrode ingots, The electrode ingot is stress-relieved annealed in a trolley-type heat treatment furnace. The annealing temperature for stress relief of the electrode ingot is 950°C, and the temperature is kept for 2 hours. Then cut off the power to cool the ingot to room temperature with the furnace. After the electrode ingot is machined, the alloy ingot is remelted in a vacuum consumable remelting furnace. The vacuum degree of the equipment is 0.05Pa, and...

Embodiment 2

[0041] The designed nickel-chromium-cobalt-iron alloy for arc microcasting and forging additive manufacturing is Ni: 50.0%; Cr: 19.51%; Fe: 9.0%; Co: 9.0%; Al: 1.7%; Ti: 0.9%; Nb : 5.5%; W: 1.2%; Mo: 2.9%; C: 0.025%; P: 0.010%; B: 0.005%; Si: 0.05%; Mn: 0.20%; S: 0.001%; As the target value, an electronic scale is used for alloy batching. Among them, the metal Ni plate is Jinchuan No. 0 nickel, the metal Cr uses low-nitrogen electrolytic chromium, and Fe is high-purity iron; a vacuum induction melting furnace is used to prepare alloy consumable electrode ingots, and the electrode ingots are stress-relieved annealed in a trolley-type heat treatment furnace. The annealing temperature for stress relief of the electrode ingot is 950°C, and the temperature is kept for 2 hours. Then cut off the power to cool the ingot to room temperature with the furnace. After the electrode ingot is machined, the alloy ingot is remelted in a vacuum consumable remelting furnace. The vacuum degree...

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Abstract

The invention belongs to the field of additive manufacturing technology and deformed superalloy wire manufacturing technology, and relates to a method for preparing nickel-chromium-iron-cobalt-based deformed superalloy wire; including pure alloy smelting, casting and forging homogenization heat treatment, forging blanking, rolling Forming, wire cold drawing, surface grinding and polishing, annealing, residual stress testing and other processes. The wire material prepared by the invention has high surface finish, small residual stress, low content of inclusions, low manufacturing cost, meets the requirements of arc micro-casting and forging manufacturing technology, and has obvious innovation and good market application prospect.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing technology and deformed high-temperature alloy wire material manufacturing technology, and relates to a preparation method of nickel-chromium-iron-cobalt-based deformed high-temperature alloy wire material. Background technique [0002] Additive manufacturing (also known as 3D printing) is a technology that integrates computer-aided design and modeling, material processing and forming, and accumulates special materials layer by layer according to methods such as sintering and melting through a numerical control system to prepare physical parts. . In the past 30 years, a lot of funds have been invested at home and abroad to carry out research on additive manufacturing technology and its preparation materials, and remarkable results have been achieved. The prepared superalloy blades and structural parts are already in the stage of evaluation and verification in engines. Compared with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C19/05C22B9/18B21C37/04C22F1/10C22F1/02B33Y70/00
CPCB21C37/045B21C37/047B33Y70/00C22B9/18C22C1/023C22C19/055Y02P10/25
Inventor 张勇韦康贾崇林王涛李钊万志鹏
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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