Unlock instant, AI-driven research and patent intelligence for your innovation.

Sample test method of partial melting of metal material fracture in fatigue load

A technique for localized melting, fatigue loading, used in analyzing materials, testing material strength using applied stable tension/pressure, measuring devices, etc.

Active Publication Date: 2019-08-27
NINGBO UNIV
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a relatively big problem

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
  • Sample test method of partial melting of metal material fracture in fatigue load
  • Sample test method of partial melting of metal material fracture in fatigue load
  • Sample test method of partial melting of metal material fracture in fatigue load

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0044] The sample design method for the local melting of the fracture of the metal material under the fatigue load provided by the embodiment of the present invention includes:

[0045] 1) The heat treatment process is carried out on the material. The treatment method is to heat the material to 860°C, keep it warm for 2h, then oil quench it to room temperature, then temper it at 180°C for 1h, and finally air cool it to room temperature.

[0046] 2) After the heat treatment process is completed, the material is made Figure 7 In the shape of oblique U-shaped grooves on both sides, or other shapes, the main reason is that oblique U-shaped grooves must be opened on both sides. The groove depth and groove width are determined according to your own experimental needs. Such as Figure 7 .

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 belongs to the technical field of melting sample design of metal material fractures, and discloses a sample design method of partial melting of a metal material fracture in a fatigue load. A thermal treatment process is performed on the material, the processing mode comprises heating the material to 860 DEG C, and performing heat insulation for 2 hours; then performing oil quenchingto a room temperature, performing tempering at the temperature of 180 DEG C for 1 hour, and finally performing air cooling to the room temperature; and preparing the material in the shape with 45-degree oblique U-shaped grooves at two sides or in other shapes after completion of the thermal treatment process. A compression fatigue test of the designed sample by the method is conducted, and the circulation frequency is controlled within 1,000,000 cycles; and after fracture of the sample, observation is performed through a scanning electron microscope, and a lot of melts are discovered at the fracture.

Description

technical field [0001] The invention belongs to the technical field of metal material fracture melting sample design, in particular to a sample design method for metal material fracture local melting under fatigue load, in particular to a method for metal material fracture local melting under fatigue load through a special heat treatment process Sample design. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Whether it is the fatigue fracture of ductile materials under normal temperature conditions, or the fatigue fracture of high hardness and low toughness materials under high temperature conditions. No matter what kind of fatigue loading mode, such as tension, tension and compression, torsion, bending, or combined bending and torsion loading, on the fatigue fracture, it shows ductile dimple fracture, brittle dissociation fracture, or both. combination. However, so far, no melting of metal has been...

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): G01N3/08G01N3/18
CPCG01N3/08G01N3/18G01N2203/0073
Inventor 李淑欣苏云帅万里彪鲁思渊余丰
Owner NINGBO UNIV