Determination of residual stresses in fiber laser welded stainless steel joints by neutron diffraction method

2019 ◽  
Author(s):  
Darina Kaisheva ◽  
Gizo Bokuchava ◽  
Igor Papushkin ◽  
Peter Petrov ◽  
Gancho Genchev ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Neutron Diffraction ◽  
Residual Stresses ◽  
Fiber Laser ◽  
Diffraction Method ◽  
Steel Joints ◽  
Neutron Diffraction Method

Residual Stress Evaluation of Ni Based Weld Metal Using Neutron Diffraction Method

2006 ◽  
Vol 524-525 ◽  
pp. 697-702 ◽  
Author(s):  
Shinobu Okido ◽  
Hiroshi Suzuki ◽  
K. Saito
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Neutron Diffraction ◽  
Weld Metal ◽  
Diffraction Method ◽  
Fem Analysis ◽  
Butt Weld ◽  
Stress Evaluation ◽  
Neutron Diffraction Method

Residual stress generated in Type-316 austenitic stainless steel butt-weld jointed by Inconel-182 was measured using a neutron diffraction method and compared with values calculated using FEM analysis. The measured values of Type-316 austenitic stainless steel as base material agreed well with the calculated ones. The diffraction had high intensity and a sharp profile in the base metal. However, it was difficult to measure the residual stress at the weld metal due to very weak diffraction intensities. This phenomenon was caused by the texture in the weld material generated during the weld procedure. As a result, this texture induced an inaccurate evaluation of the residual stress. Procedures for residual stress evaluation to solve this textured material problem are discussed in this paper. As a method for stress evaluation, the measured strains obtained from a different diffraction plane with strong intensity were modified with the ratio of the individual elastic constant. The values of residual stress obtained using this method were almost the same as those of the standard method using Hooke’s law. Also, these residual stress values agreed roughly with those from the FEM analysis. This evaluation method is effective for measured samples with a strong texture like Ni-based weld metal.

Neutron Diffraction Residual Stress Evaluation and Numerical Modeling of Coating Obtained by PTA Process

2010 ◽  
Vol 638-642 ◽  
pp. 594-599
Author(s):  
Abdeljalil Nady ◽  
Herve Bonnefoy ◽  
Vincent Klosek ◽  
Marie Helene Mathon ◽  
Alain Lodini
Keyword(s):  
Neutron Diffraction ◽  
Residual Stresses ◽  
Complex Geometry ◽  
Steel Substrate ◽  
Diffraction Method ◽  
Stress Evaluation ◽  
Physical Conditions ◽  
Abaqus Code ◽  
Neutron Diffraction Method ◽  
Good Agreement

The Stellite 6 hardfacing alloys have been deposited on steel substrate using a Plasma Transferred Arc (PTA) with complex geometry. The residual strain of the PTA technology at the surface of coating layer and the interface were determined by neutron diffraction method. In the present work, a numerical model for the residual stresses formed during the PTA process with physical conditions and mechanical properties using the Abaqus code is analysed. The result reveals that the residual stresses obtained by the numerical simulation are in very good agreement with experimental results by the neutron diffraction.

Determination of the stress field in textured duplex steel using the TOF neutron diffraction method

2007 ◽  
Vol 55 (18) ◽  
pp. 6219-6233 ◽  
Author(s):  
S. Wroński ◽  
A. Baczmański ◽  
R. Dakhlaoui ◽  
C. Braham ◽  
K. Wierzbanowski ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Stress Field ◽  
Diffraction Method ◽  
Duplex Steel ◽  
Neutron Diffraction Method

Determination of the composition of titanium carbide by the neutron diffraction method

1976 ◽  
Vol 15 (5) ◽  
pp. 354-356 ◽  
Author(s):  
V. T. �m ◽  
I. Karimov ◽  
V. F. Petrunin ◽  
I. Khidirov ◽  
V. A. Somenkov
Keyword(s):  
Neutron Diffraction ◽  
Titanium Carbide ◽  
Diffraction Method ◽  
Neutron Diffraction Method

Neutron diffraction measurements of residual stress and plastic deformation in an aluminium alloy weld

1988 ◽  
Vol 23 (4) ◽  
pp. 201-211 ◽  
Author(s):  
D J Smith ◽  
R H Leggatt ◽  
G A Webster ◽  
H J Macgillivray ◽  
P J Webster ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Plastic Strain ◽  
Residual Stresses ◽  
Aluminium Alloy ◽  
Three Dimensional ◽  
Diffraction Method ◽  
Accurate Indication ◽  
Neutron Diffraction Technique ◽  
Neutron Diffraction Method ◽  
Alloy Weld

The neutron diffraction technique for measuring residual stresses non-destructively in an aluminium alloy weld has been examined. Calibration experiments have been performed to determine the influence of prior plastic strain and surface effects. Comparisons have also been made with strain gauge methods using the destructive block removal and layering technique for measuring the residual stresses. It has been shown that the neutron diffraction method gives an accurate indication of the three dimensional stress distribution present in a weld and that it can also be employed to estimate the amount of prior plastic strain encountered.

Neutron diffraction measurements for the determination of residual stresses in MMC tensile and fatigue specimens

2000 ◽  
Vol 276-278 ◽  
pp. 923-924 ◽  
Author(s):  
F Fiori ◽  
E Girardin ◽  
A Giuliani ◽  
T Lorentzen ◽  
A Pyzalla ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Residual Stresses
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