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Rapid densifying method for powder high-temperature alloy component

A superalloy and densification technology, which is applied to the improvement of the preparation process of powder superalloy components and the field of rapid densification, can solve the problems of complex process, difficult process execution and structure control, and narrow processing window, so as to reduce the manufacturing cost and shorten the The effect of development cycle and simplified process flow

Active Publication Date: 2017-02-08
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-alloyed powder superalloys are generally sensitive to temperature, have a narrow processing window, and are hard-to-deform alloys, which lead to certain difficulties in process execution and microstructure control.
[0003] Foreign powder superalloys are mainly used to prepare high-performance engine turbine disks and other hot-end components, and are mainly prepared by powder hot isostatic pressing + extrusion + superplastic forging. The process is characterized by complex processes, long preparation cycles, and high costs.

Method used

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  • Rapid densifying method for powder high-temperature alloy component
  • Rapid densifying method for powder high-temperature alloy component
  • Rapid densifying method for powder high-temperature alloy component

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Experimental program
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Effect test

Embodiment 1

[0030] The rapid prototyping method for powder superalloy components is characterized in that: the steps of the method are:

[0031] Step 1. Preparation of powder billet

[0032] According to the calculation of the volume of the component, a cylindrical stainless steel sheath is made, the grade of the stainless steel material is 304, the superalloy powder is filled in the sheath, the inside of the sheath is vacuumed and then sealed and welded to obtain a cylindrical powder ingot 5. The upper end of the powder ingot 5 is connected by welding to an upper end cover 4 for protecting the powder inlet pipe of the sheath, and the lower end of the powder ingot 5 is connected by welding to a lower end cover 6 that matches the shape of the upper end cover 4 so that the sheath is evenly pressed ;

[0033] Step 2. Preparation of forging mold

[0034] The forging mold is prepared by adopting a steel material with a fracture strength exceeding 2000MPa, and the forging mold is composed of ...

Embodiment 2

[0044] The rapid prototyping method for powder superalloy components is characterized in that: the steps of the method are:

[0045] Step 1. Preparation of powder billet

[0046] According to the calculation of the volume of the component, a cylindrical stainless steel sheath is made, the grade of the stainless steel material is 304, the superalloy powder is filled in the sheath, the inside of the sheath is vacuumed and then sealed and welded to obtain a cylindrical powder ingot 5. The upper end of the powder ingot 5 is connected by welding to an upper end cover 4 for protecting the powder inlet pipe of the sheath, and the lower end of the powder ingot 5 is connected by welding to a lower end cover 6 that matches the shape of the upper end cover 4 so that the sheath is evenly pressed ;

[0047] Step 2. Preparation of forging mold

[0048]The forging mold is prepared by adopting a steel material with a fracture strength exceeding 2000MPa, and the forging mold is composed of a...

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Abstract

The invention belongs to the technical field of direct forging forming of a powder high-temperature alloy component, and relates to the improvement of a preparation process for the powder high-temperature alloy component. The improvement of the preparation process for the powder high-temperature alloy component is implemented by the following steps: preparing a suitable powder ingot blank; designing a reasonable direct forging forming mould for powder; selecting forging process parameters. According to the technology, a sheath is filled with the powder, and the powder is forged and formed directly, so that a powder high-temperature alloy forging blank which has dense tissues and uniform and fine crystal grains can be obtained; the process flow is simplified; the research period is shortened; the component manufacturing cost is reduced.

Description

technical field [0001] The invention relates to a rapid densification method for powder superalloy components, belongs to the technical field of thermal processing, and relates to the improvement of the preparation process of powder superalloy components. Background technique [0002] Powder superalloy is a plate material developed to solve the solidification segregation and deformation difficulties caused by the high alloying of cast and forged alloys. Highly alloyed powder superalloys have the advantages of high temperature resistance, high strength and toughness, and low crack growth rate. They are the preferred materials for manufacturing high-performance, high-reliability, and long-life advanced aeroengine turbine disks and other high-temperature resistant components. However, high-alloyed powder superalloys are generally extremely sensitive to temperature, have a narrow processing window, and are hard-to-deform alloys, which lead to certain difficulties in process exec...

Claims

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Application Information

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IPC IPC(8): B22F3/17B22F3/10
CPCB22F3/10B22F3/17B22F2003/175B22F2998/10
Inventor 王淑云方爽姜涛东赟鹏于秋颖
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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