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

Heat treatment method single-crystal nickel-based high-temperature alloy after cold deformation

A nickel-based superalloy, cold deformation technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve problems such as heavy workload

Active Publication Date: 2020-02-07
XI AN JIAOTONG UNIV
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you still choose to use the experimental method to determine the solid solution temperature, then the workload is very large

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
  • Heat treatment method single-crystal nickel-based high-temperature alloy after cold deformation
  • Heat treatment method single-crystal nickel-based high-temperature alloy after cold deformation
  • Heat treatment method single-crystal nickel-based high-temperature alloy after cold deformation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1: Prepare a standard cylindrical sample with an aspect ratio of 2:1. The deformation mode is compression at room temperature, and the plastic deformation of the sample is 6.5%;

[0038]Step 2: Determine that the temperature below the standard solution temperature of the single crystal nickel-based superalloy is 150°C as the low-speed heating recovery heat treatment starting temperature of 1150°C, and the termination temperature is the standard solution temperature of the single crystal nickel-based superalloy of 1300°C;

[0039] Step 3: The heating rate is determined by different temperature zones. Between the start temperature and the end temperature, it is divided into a low temperature range and a high temperature range. According to the high temperature range is 0.618 times the temperature difference (golden section point) of the low temperature range, the low temperature range is 1150-1243 ° C, and the heating rate is 0.15 ° C / min, the high temperature rang...

Embodiment 2

[0044] Step 1: Prepare a standard cylindrical sample with an aspect ratio of 2:1. The deformation mode is compression at room temperature, and the plastic deformation of the sample is 6.5%;

[0045] Step 2: Determine that the temperature below the standard solution temperature of the single crystal nickel-based superalloy is 180°C as the low-speed heating recovery heat treatment starting temperature of 1120°C, and the end temperature is the standard solution temperature of the single crystal nickel-based superalloy of 1300°C;

[0046] Step 3: The heating rate is determined by different temperature zones. Between the start temperature and the end temperature, it is divided into a low temperature range and a high temperature range. According to the high temperature range is 0.618 times the temperature difference (golden section point) of the low temperature range, the low temperature range is 1120-1230 ° C, and the heating rate is 0.5 ° C / min, the high temperature range is 123...

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

No PUM Login to View More

Abstract

The invention discloses a heat treatment method a single-crystal nickel-based high-temperature alloy after cold deformation. The method comprises the following steps that a cylindrical sample of the single-crystal nickel-based high-temperature alloy is prepared, wherein the sample is compressed at room temperature, the plastic deformation ainstall of the single-crystal nickel-based high-temperature alloy is 6.5% or within, and the starting temperature of the low-speed heating recovery heat treatment of the single-crystal nickel-based high-temperature alloy is determined to be 150-180 DEG C below a standard solid solution temperature, the termination temperature is the standard solid solution temperature of the single-crystal nickel-based high-temperature, the part between the starting temperature and the termination temperature is divided into a low temperature interval and a high temperature interval, the temperature difference value of the high temperature interval is a predeterminedmultiple of the temperature difference value of the low temperature interval, the sample is subjected to the recovery heat treatment according to the temperature rise rate, after the temperature reaches the termination temperature, the sample is air cooled to room temperature and taken out after the time required for the solid solution heat treatment, and the taken-out sample is subjected to microscopic tissue morphology characterization by using a scanning electron microscope to detect the size and shape of the precipitated reinforced phase gamma' phase in the sample and determine the occurrence of no recrystallization texture.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment, in particular to a heat treatment method for a single crystal nickel-based superalloy after cold deformation. Background technique [0002] Cast nickel-based superalloys have been developed since the 1950s, and their microstructures have developed from equiaxed crystals to directionally solidified single crystals. Compared with equiaxed crystals, the performance of high-temperature creep, high-temperature fatigue and corrosion / oxidation resistance of single crystals has been improved several times. It is the "heart" of high-thrust aero-engines—the material of choice for high-pressure turbine blades. Although it integrates many excellent mechanical properties, because the single crystal nickel-based superalloy often needs to go through dozens of processes when it is manufactured into a finished product, it is very susceptible to the influence of external stress: a large number of disl...

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
IPC IPC(8): C22F1/10C21D9/00C22F1/02
CPCC21D9/0068C22F1/006C22F1/02C22F1/10
Inventor 陈凯林思聪朱文欣
Owner XI AN JIAOTONG 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