High-strength and high-plasticity single-phase Inconel 625 nickel-based alloy and preparation method thereof

A nickel-based alloy, high plasticity technology, applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problem of low strength of Inconel625 nickel-based alloy, achieve good plasticity, high yield strength, and excellent comprehensive mechanical properties

Active Publication Date: 2020-05-29
NANJING ENIGMA IND AUTOMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of Inconel 625 nickel-based alloy by this method has higher efficiency to a certain extent, but the strength of the prepared Inconel 625 nickel-based alloy is lower

Method used

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  • High-strength and high-plasticity single-phase Inconel 625 nickel-based alloy and preparation method thereof
  • High-strength and high-plasticity single-phase Inconel 625 nickel-based alloy and preparation method thereof
  • High-strength and high-plasticity single-phase Inconel 625 nickel-based alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The single-phase Inconel 625 nickel-based alloy with a coarse-grained columnar crystal structure is obtained by rapidly depositing and depositing layer by layer on the carbon steel substrate according to the set path under the protection of protective gas by using the method of arc-added material. The crystal structure has high strength and high plasticity. The chemical elements in the nickel-based alloy are measured by atomic percentage (at.%) as follows: Ni:>58.00%, Cr:20.00-23.00%, Mo:8.00-10.00%, Nb:3.15-4.15%, Fe:≤5.00 %, Co: ≤1.00%, Si: ≤0.50%, Mn: ≤0.50%, Ti: ≤0.40%, Al: ≤0.40%, Cu: ≤0.30%, C: ≤0.10%, S: ≤0.02%, P:≤0.02%, Ta:≤0.02%.

[0041] The arc process parameters are as follows: CMT MIG process is adopted, and the wire is NiCrMo-3 (625 nickel-based alloy) wire with a diameter of 1.2 mm. The printing adopts ArcMan 600 equipment, its process is DC CMT, and the arc additive software used is IungoPNT. The welding expert library version used in the experiment ...

Embodiment 2

[0045] The difference from Example 1 is:

[0046] Inconel 625 nickel-based alloy with columnar crystal single-phase structure with a high proportion of small-angle grain boundaries is obtained by rapidly depositing layer by layer on the carbon steel substrate according to the set path under the protection of protective gas by using arc additive technology. The columnar grain structure with angled grain boundaries has the characteristics of high strength and high plasticity. The arc process parameters are as follows: CMT MIG process is adopted, and the wire is NiCrMo-3 (625 nickel-based alloy) wire with a diameter of 1.2mm. The printing process adopts ArcMan 600 equipment, its process is DC CMT, and the arc additive software used is IungoPNT. The welding expert library version used in the experiment is 1693 (NIBAS625), the wire feeding speed is 4.6m / min, the arc length correction is 0, and the inductance correction is 0. Then, the obtained material was subjected to solution t...

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Abstract

The invention relates to the technical field of arc additive metal materials, in particular to a high-strength and high-plasticity single-phase Inconel 625 nickel-based alloy and a preparation methodthereof. The Inconel 625 nickel-based alloy is of a single-phase columnar coarse-grain structure with a grain size of 45-360m. Crystal grains have a low angle grain boundary of 15 to 33 percent by mass. The invention also discloses a preparation method of the Inconel 625 nickel-based alloy. The Inconel 625 nickel-based alloy prepared according to the method is 720 to 730MPa in tensile strength, is390 to 415MPa in yield strength, and is 54 to 63 percent in uniform elongation percentage. Compared with a conventional as-cast 625 nickel-based alloy, the Inconel 625 nickel-based alloy has the advantages that the strength and plasticity of the alloy are improved significantly.

Description

technical field [0001] The invention relates to the technical field of arc-added metal materials, in particular to a high-strength and high-plastic single-phase Inconel 625 nickel-based alloy and a preparation method thereof. Background technique [0002] Inconel 625 nickel-based alloy has excellent comprehensive mechanical properties, good oxidation resistance and corrosion resistance, and is widely used in industrial fields such as aerospace and machinery manufacturing. The traditional preparation process of Inconel 625 nickel-based alloy parts mainly includes isomaterial manufacturing (casting, rolling, etc.) technology and subtractive manufacturing (turning, milling, etc.) technology, etc. Inconel 625 nickel-based alloy prepared by traditional technology has a relatively excellent comprehensive Mechanical properties, but the process is cumbersome and the production efficiency is low. At the same time, it is difficult to process components with complex shapes and the prod...

Claims

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Application Information

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IPC IPC(8): C22C19/05B23K9/167B23K9/133B23K9/32B33Y10/00B33Y70/00
CPCB23K9/133B23K9/167B23K9/32B33Y10/00B33Y70/00C22C19/055
Inventor 程远袁玉荣
Owner NANJING ENIGMA IND AUTOMATION TECH CO LTD
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