Method for measuring residual stress of nickel-aluminum bronze by utilizing neutron diffraction method

A nickel-aluminum-bronze, residual stress technique used in material analysis, measuring devices, instruments, etc. using wave/particle radiation

Active Publication Date: 2015-03-04
SHANGHAI JIAO TONG UNIV
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, there is no research related to the measurement and control of

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 measuring residual stress of nickel-aluminum bronze by utilizing neutron diffraction method
  • Method for measuring residual stress of nickel-aluminum bronze by utilizing neutron diffraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

[0020] The method for measuring the residual stress of nickel-aluminum bronze alloy by neutron diffraction method provided by the present invention is used to measure the α phase and Fe in nickel-aluminum bronze alloy caused by deformation. 3 Interphase stress between Al phases, including the following steps:

[0021] The first step, sample preparation

[0022] An ingot with a composition of 81.5% copper, 9.85% aluminum, 3.76% nickel, 3.86% iron and 1.03% manganese was obtained by vacuum induc...

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
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for measuring residual stress of nickel-aluminum bronze by utilizing a neutron diffraction method, which is used for measuring phase-to-phase stress between an alpha phase and a Fe3Al phase in nickel-aluminum bronze alloy caused by the deformation. The method comprises the following steps: step 1, preparing a nickel-aluminum bronze alloy tensile sample; step 2, selecting measuring parameters of neutron diffraction; step 3, in-situ measuring lattice distortion of a material; and step 4, calculating a second category of residual stresses. According to the method, the residual stress value of a copper basal body and the Fe3Al phase is obtained by utilizing the neutron diffraction method, a method for controlling the phase-to-phase stress of the nickel-aluminum bronze by utilizing the deformation is proposed, different residual stresses in different directions are produced between the alpha phase and the Fe3Al phase by loading and unloading different tensile stresses, and a variation trench and a numerical value of different residual stresses of the two phases under different loading situations can be obtained.

Description

technical field [0001] The invention relates to a method for measuring the residual stress of a nickel-aluminum bronze alloy, in particular to a method for measuring the interphase stress after deformation of the nickel-aluminum bronze, that is, the second type of residual stress, by using a neutron diffraction stress meter. Background technique [0002] Residual stress is a stress system that maintains self-equilibrium inside an object without external force. According to the cause of stress, there are thermal stress, phase transformation stress and shrinkage stress. According to the size of the affected area, it is divided into three categories: the first category of stress (macroscopic stress) is the stress that exists in the entire volume or in a larger size range and maintains balance. The second type of stress (microscopic stress) is the stress that exists in one grain or several grains and maintains balance. The third type of stress (ultramicroscopic stress) is the ...

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): G01N23/202
Inventor 徐小严王虹李建吕维洁孙光爱张荻
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap