Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for obtaining GH4169 alloy ultra-fine grain forging

A GH4169, ultra-fine grain technology, applied in the field of forging, can solve the problems of reduced mechanical properties and performance, coarse grain and mixed grain, and the degree of recrystallization is very different, and achieves the effect of fine and uniform forging structure.

Active Publication Date: 2020-08-25
CENT SOUTH UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of factors such as friction, blank shape, and die chilling effect, there is an inevitable phenomenon of uneven deformation of the forging during the forging process, resulting in great differences in the degree of recrystallization in each part, and complete recrystallization in the large deformation area. However, incomplete recrystallization occurs in the small deformation area, and even no recrystallization occurs in the area close to the mold, resulting in serious coarse grains and mixed crystals in the final structure, which seriously reduces its mechanical properties and performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for obtaining GH4169 alloy ultra-fine grain forging
  • Method for obtaining GH4169 alloy ultra-fine grain forging
  • Method for obtaining GH4169 alloy ultra-fine grain forging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: The GH4169 alloy forging billet is subjected to solution treatment and aging treatment successively, the solution temperature is 1040±5°C, the solution time is 45min, the aging temperature is 900±5°C, and the aging time is 12h. Water quenching is carried out on the forged billet after solid solution and aging treatment respectively;

[0023] Step 2: Heat the GH4169 alloy forging billet processed in step 1 to the deformation temperature and hold it for 5 minutes, then perform upsetting thermal deformation, the deformation temperature is 950±5°C, and the strain rate is 0.1s -1 , the amount of deformation is 50% (equivalent to 0.69), and the forging is water quenched immediately after the deformation. The processing route of GH4169 alloy forging blank through steps 1 and 2 is as follows figure 1 As shown, the deformed structure after forging is as follows figure 2 shown;

[0024] Step 3: Perform delta phase aging treatment on the forging obtained in step 2, the...

Embodiment 2

[0028] Step 1: The GH4169 alloy forging billet is subjected to solution treatment and aging treatment successively, the solution temperature is 1040±5°C, the solution time is 45min, the aging temperature is 900±5°C, and the aging time is 12h. Water quenching is carried out on the forged billet after solid solution and aging treatment respectively;

[0029] Step 2: Heat the GH4169 alloy forging billet processed in step 1 to the deformation temperature and hold it for 5 minutes, then perform upsetting thermal deformation, the deformation temperature is 950°C, and the strain rate is 0.1s -1 , the amount of deformation is 50% (equivalent to 0.69), and the forging is water quenched immediately after the deformation;

[0030] Step 3: Perform aging treatment on the forging obtained in step 2, the aging temperature is 900±5°C, the aging time is 12h, and then water quenching;

[0031] Step 4: Perform continuous cooling annealing on the GH4169 forging obtained in step 3. The initial an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for obtaining a GH4169 alloy ultra-fine grain forging. The method includes the following steps that (1), a GH4169 forging stock is subjected to solution treatment andaging treatment in sequence, and a uniform structure with a certain quantity of delta phases is obtained; (2), the forging stock obtained after solution treatment and aging treatment is subjected to forging deformation, the deformation temperature is controlled with 950 DEG C-1,010 DEG C, the strain rate is not smaller than 0.05s<-1>, and the equivalent strain is not smaller than 0.35; (3), the obtained forging is subjected to aging treatment again, the aging temperature is controlled within 880 DEG C-920 DEG C, and the aging time is 9 h-24 h; and (4), the forging is subjected to recrystallization heat treatment in a continuous cooling manner, the cooling initial temperature is controlled within 990 DEG C-1,030 DEG C, the cooling rate is 1 DEG C / min-3 DEG C / min, and the cooling final temperature is controlled within 950 DEG C-990 DEG C. By means of the method, the GH4169 alloy ultra-fine grain forging can be obtained, and an effective way is provided for manufacturing high-quality forgings.

Description

technical field [0001] The invention relates to a method for obtaining GH4169 alloy ultra-fine grain forgings, which belongs to the technical field of forging. Background technique [0002] GH4169 alloy is a precipitation-strengthened nickel-based alloy, which has good comprehensive properties at -253°C to 650°C, high yield strength, good fatigue resistance, oxidation resistance, and corrosion resistance, so it is widely used in the manufacture of turbine disks and other high-quality aero-engine parts. These components have been in service for a long time under the harsh conditions of high temperature, high pressure, high speed and alternating load, so extremely high requirements are put forward for their performance. Grain refinement is an important way to improve the strength, plasticity and formability of parts. [0003] Usually, forgings such as turbine disks can effectively eliminate the coarse grains in the castings through dynamic recrystallization during the die fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/10
CPCC22F1/002C22F1/10
Inventor 陈明松马艳永蔺永诚曾维栋王冠强蔡金亮邹奋扬彭诚旭
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com