Spatial variations of residual stresses were determined through the thickness of 70mm thick ferritic steel welds created using low (1.7kJmm<SUP>-1</SUP>) and high (56kJmm<SUP>-1</SUP>) heat inputs. Two-dimensional maps of the l...
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https://www.riss.kr/link?id=A107670036
2013
-
SCOPUS,SCIE
학술저널
3564-3574(11쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
Spatial variations of residual stresses were determined through the thickness of 70mm thick ferritic steel welds created using low (1.7kJmm<SUP>-1</SUP>) and high (56kJmm<SUP>-1</SUP>) heat inputs. Two-dimensional maps of the l...
Spatial variations of residual stresses were determined through the thickness of 70mm thick ferritic steel welds created using low (1.7kJmm<SUP>-1</SUP>) and high (56kJmm<SUP>-1</SUP>) heat inputs. Two-dimensional maps of the longitudinal residual stress were obtained by using the contour method. The results were compared to neutron diffraction measurements through the thickness at different locations from the weld centerline. The deep hole drilling technique was utilized to confirm the maximum stress locations and magnitudes. The results show that significant tensile stresses (~90% of yield strength) occur along the weld centerline near the top surface (within 10% of the depth) in the low heat-input specimen. Meanwhile, in the high heat-input weld, the peak stress moved towards the heat-affected zone at a depth of ~40% of the thickness. Finally, the influence of residual stresses on potential fracture behavior of the welded joints is discussed.