Revealing the residual stress distribution in laser welded Eurofer97 steel by neutron diffraction and Bragg edge imaging

2022 ◽  
Author(s):  
Bin Zhu ◽  
Nathanael Leung ◽  
Winfried Kockelmann ◽  
Saurabh Kabra ◽  
Andrew J. London ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Neutron Diffraction ◽  
Residual Stress Distribution

scholarly journals Neutron diffraction and the residual stress distribution of magnesium processed by equal channel angular pressing

2020 ◽  
Vol 1436 ◽  
pp. 012034
Author(s):  
Muhammad Rifai ◽  
Mujamilah ◽  
Muhammad Refai Muslich ◽  
Ridwan ◽  
Mouhamadou Moustapha Sarr ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Neutron Diffraction ◽  
Equal Channel Angular Pressing ◽  
Residual Stress Distribution ◽  
Angular Pressing

Residual Stress Relief in the Aluminium Alloy 7075

2017 ◽  
Vol 905 ◽  
pp. 31-39 ◽  
Author(s):  
Jeremy S. Robinson ◽  
Christopher E. Truman ◽  
Thilo Pirling ◽  
Tobias Panzner
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Neutron Diffraction ◽  
Residual Stresses ◽  
Aluminium Alloy ◽  
Stress Relief ◽  
Residual Stress Distribution ◽  
Cold Compression ◽  
Heat Treated ◽  
Minimum Residual

The residual stresses in heat treated 7075 aluminium alloy blocks have been characterised using two neutron diffraction strain scanning instruments. The influence of uniaxial cold compression (1-10%) on relieving the residual stress has been determined. Increasing the magnitude of cold compression from 1 to 10% has been shown to have a beneficial effect on the residual stress distribution by reducing the range between the maximum and minimum residual stresses. The effect of over aging 7075 on residual stress has also been characterised using neutron diffraction and this was found to reduce the residual stress by 25-40%. A relationship between {311} peaks widths and amount of cold compression was also observed.

Neutron Diffraction Studies of Residual Stress Distribution in the Vicinity of the Single Pass Fillet Steel Welds

2015 ◽  
Vol 732 ◽  
pp. 13-19
Author(s):  
Ľuboš Mráz ◽  
Leif Karlsson ◽  
Miroslav Vrána ◽  
Pavol Mikula
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Neutron Diffraction ◽  
Residual Strain ◽  
Residual Stress Distribution ◽  
Filler Materials ◽  
Single Pass ◽  
Stress Measurements ◽  
Strain Stress ◽  
Steel Welds

In this contribution the results of residual strain/stress measurements performed on several single pass fillet steel welds which were carried out at different welding conditions, namely, with different filler materials are presented.

scholarly journals Residual Stress Distribution in Carbon Steel Pipe Welded Joint Measured by Neutron Diffraction

2000 ◽  
Vol 49 (12Appendix) ◽  
pp. 287-294 ◽  
Author(s):  
Makoto HAYASHI ◽  
Masayuki ISHIWATA ◽  
Yukio MORII ◽  
Nobuaki MINAKAWA ◽  
John H. ROOT
Keyword(s):  
Residual Stress ◽  
Carbon Steel ◽  
Stress Distribution ◽  
Neutron Diffraction ◽  
Welded Joint ◽  
Residual Stress Distribution ◽  
Steel Pipe

Neutron diffraction analysis of the residual stress distribution in a bent bar

2000 ◽  
Vol 35 (4) ◽  
pp. 235-246 ◽  
Author(s):  
A. N Ezeilo ◽  
G. A Webster
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Neutron Diffraction ◽  
Residual Stresses ◽  
Residual Stress Distribution ◽  
Four Point Bending ◽  
Refinement Method ◽  
Nickel Based Alloy ◽  
Neutron Diffraction Technique ◽  
Profile Refinement

A well-characterized residual stress distribution resulting from four-point bending has been analysed using the neutron diffraction technique. Residual stresses were obtained from the strains measured at discrete positions through the bent bar on the (111) and (311) crystal planes of a nickel-based alloy using the appropriate diffraction elastic constants. In addition a profile refinement method was used to determine the residual stresses from average strains from all the diffraction peaks in the spectrum. The measured residual stress profiles have also been compared with strain gauge data and with analytical and finite element predictions. It has been established that the profile refinement approach gives stresses which most closely match those obtained by the non-diffraction techniques.

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