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Preparation method of gh4037 superalloy semi-solid slurry

A 1. GH4037, semi-solid slurry technology, applied in the field of preparation of high solid fraction GH4037 superalloy semi-solid slurry, can solve the problems of complex preparation process and high preparation cost of semi-solid slurry

Active Publication Date: 2019-01-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing GH4037 superalloy semi-solid slurry in order to solve the technical problems of complicated preparation process and high preparation cost of existing semi-solid slurry

Method used

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  • Preparation method of gh4037 superalloy semi-solid slurry
  • Preparation method of gh4037 superalloy semi-solid slurry
  • Preparation method of gh4037 superalloy semi-solid slurry

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specific Embodiment approach 1

[0022] Specific embodiment one: the preparation method of GH4037 superalloy semi-solid slurry in this embodiment is carried out according to the following steps:

[0023] 1. First, heat the GH4037 superalloy billet to 920°C-1000°C, and carry out hot extrusion deformation under the condition of an extrusion ratio of 16-30 to obtain a deformed alloy;

[0024] 2. Air-cool the deformed alloy to room temperature;

[0025] 3. Quantitatively divide the air-cooled deformed alloy into cylinders. The principle of division is to add a margin of 6%-8% to the volume of the required semi-solid thixotropic deformed parts to obtain the divided GH4037 superalloy billet. ;

[0026] 4. Preheat the resistance furnace to 800°C-900°C, then put the divided GH4037 high-temperature alloy billet into the resistance furnace, vacuumize to 0.1Pa, then fill with argon to 0.2MPa, and then heat up for 35min-40min to 1360°C-1380°C, and then keep warm for 19min-41min to obtain a semi-solid slurry.

specific Embodiment approach 2

[0027] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the GH4037 superalloy billet is heated to 930°C-990°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that in step 1, the GH4037 superalloy billet is heated to 940°C-980°C. Others are the same as those in the first or second embodiment.

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Abstract

The invention belongs to the field of preparation of semi-solid slurry, and relates to a preparation method of GH4037 high-temperature alloy semi-solid slurry, in particular to a preparation method of high-solid-fraction GH4037 high-temperature alloy semi-solid slurry. The technical problems that an existing semi-solid slurry preparation procedure is complex, and the preparation cost is high are solved. The preparation method comprises the following steps that a GH4037 high-temperature alloy cast blank is subjected to hot extrusion deformation and air cooling to the room temperature, deformed alloy subjected to air cooling is quantitatively divided into cylinders, the cylinders are put into a resistance furnace, vacuumizing is conducted till the pressure is 0.1 Pa, then argon is introduced into the resistance furnace till the pressure is 0.2 MPa, heating is conducted for 35-40 min till the temperature is 1360-1380 DEG C, then, heat preservation is conducted for 19-41 min, and the semi-solid slurry is obtained. According to the preparation method, the GH4037 high-temperature alloy semi-solid slurry which is uniform in structure, fine in grain and high in spheroidization degree is prepared easily with the short process and low cost.

Description

technical field [0001] The invention relates to a method for preparing a semi-solid slurry of a high-solid fraction GH4037 superalloy. Background technique [0002] As one of the two main technical routes of semi-solid processing, semi-solid thixotropic forming technology has been widely used in aluminum alloys and magnesium alloys since it was proposed by M.C.Flemings of MIT in the 1970s. With the in-depth research on semi-solid processing technology, researchers are constantly expanding the material application field of semi-solid thixotropic deformation technology. From a theoretical analysis, any alloy material with a solid-liquid temperature range can undergo semi-solid thixotropic deformation. In addition to aluminum alloys and magnesium alloys with low melting points, some high melting point alloys have gradually become a new hotspot in the field of semi-solid processing. However, the research on the theory and technology of semi-solid processing of high melting poi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D1/00C22F1/10
CPCB22D1/00C22F1/10
Inventor 姜巨福王迎肖冠菲
Owner HARBIN INST OF TECH