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A nickel-based alloy wire suitable for additive manufacturing and its manufacturing process

A technology of additive manufacturing and nickel-based alloys, which is applied in the field of material processing, can solve problems such as the lack of nickel-based alloy wires, and achieve broad application prospects and good toughness.

Active Publication Date: 2022-07-29
CENT IRON & STEEL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a nickel-based alloy wire suitable for additive manufacturing and a manufacturing process to solve the existing problem of lack of nickel-based alloy wire

Method used

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  • A nickel-based alloy wire suitable for additive manufacturing and its manufacturing process
  • A nickel-based alloy wire suitable for additive manufacturing and its manufacturing process

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Experimental program
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Effect test

Embodiment 1

[0017] The nickel-based alloy wire of the present invention is used for laser fuse deposition additive manufacturing, and the chemical composition of the wire is expressed in weight percentage as follows: C: 0.044, Si: 0.16, Mn: 0.023, Cr: 20.24, Mo: 2.12, Ti: 0.67 , Nb: 1.08, Al: 0.64, Fe: 1.50, Cu: 0.076, P: 0.005, S: 0.0018, the balance is nickel and impurities usually present in metal smelting. Laser fuse deposition additive manufacturing systems such as figure 1 As shown, the laser power is 3.0kW, the scanning speed is 0.6m / min, the wire feeding speed is 1.2m / min, the wire spacing is 1.5mm, the hot wire current is 55A, the laser spot diameter is 3.0mm, and the protective gas is argon. The formed structure is mainly austenite (such as figure 2 shown). The formed member has good mechanical properties, the tensile strength is 776MPa, and the elongation after fracture is 46.5%.

Embodiment 2

[0019] The nickel-based alloy wire of the present invention is used for laser fuse deposition additive manufacturing, and the chemical composition of the wire is expressed in weight percentage as follows: C: 0.021, Si: 0.10, Mn: 0.021, Cr: 20.96, Mo: 2.27, Ti: 0.42 , Nb: 1.16, Al: 0.43, Fe: 1.32, Cu: 0.053, P: 0.006, S: 0.0015, the balance is nickel and impurities usually present in metal smelting. The laser power is 2.0kW, the scanning speed is 0.3m / min, the wire feeding speed is 0.9m / min, the wire spacing is 1.0mm, the hot wire current is 50A, the laser spot size is 5.0mm×2.0mm, and the protective gas is argon. The formed member has good mechanical properties, the tensile strength is 751MPa, and the elongation after fracture is 51%.

Embodiment 3

[0021] The nickel-based alloy wire of the present invention is used for laser fuse deposition additive manufacturing, and the chemical composition of the wire is expressed in weight percentage as follows: C: 0.035, Si: 0.22, Mn: 0.089, Cr: 19.60, Mo: 2.03, Ti: 0.57 , Nb: 1.02, Al: 0.51, Fe: 1.89, Cu: 0.087, P: 0.008, S: 0.0063, the balance is nickel and impurities usually present in metal smelting. The laser power is 3.5kW, the scanning speed is 0.9m / min, the wire feeding speed is 1.8m / min, the wire spacing is 0.5mm, the hot wire current is 55A, the laser spot size is 4.0mm×1.0mm, and the protective gas is argon. The formed member has good mechanical properties, the tensile strength is 822MPa, and the elongation after fracture is 39%.

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Abstract

A nickel-based alloy wire suitable for additive manufacturing and a manufacturing process belong to the technical field of material processing. The weight percentage of its chemical composition is: C: 0.02-0.05, Si: ≤ 0.30, Mn: ≤ 0.20, Cr: 19.50-21.00, Mo: 2.00-2.30, Ti: 0.40-0.70, Nb: 1.00-1.20, Al: 0.40 ~0.65, Fe: ≤ 2.00, Cu: ≤ 0.10, P: ≤ 0.010, S: ≤ 0.008, the balance is nickel and impurities usually present in metal smelting. Manufacturing process: laser power 2.0kW~4.0kW, scanning speed 0.3m / min~0.9m / min, wire feeding speed 0.9m / min~1.8m / min, filament spacing 0.5mm~2.0mm, hot wire current 50A~ 65A, the laser beam is a circular spot or a rectangular spot, and the protective gas is argon. The additively manufactured formed components have good mechanical properties, the tensile strength is ≥680MPa, and the elongation after fracture is ≥35%.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a nickel-based alloy wire suitable for additive manufacturing and a manufacturing process. Background technique [0002] Metal additive manufacturing technology uses high-energy laser beams, electron beams or arcs as heat sources, metal powder or wire as additive materials, and directly converts CAD digital models into solid parts. It is an important part of additive manufacturing technology. It has great advantages in solving problems such as difficult-to-process materials, complex structures, and rapid manufacturing in industrial production. Metal additive manufacturing technology is not only a supplement to traditional technologies such as casting, forging, and welding, but also its manufacturing characteristics of high precision in the processing process and extensive processing materials make it superior to traditional technologies. [0003] Nickel-b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05B22F10/20B33Y70/00B33Y10/00
CPCC22C19/055B22F10/20B33Y70/00B33Y10/00Y02P10/25
Inventor 赵琳彭云田志凌马成勇曹洋方前肖红军朱彦洁侯旭儒
Owner CENT IRON & STEEL RES INST