Residual-stress measurement in socket welded joints by neutron diffraction

Book · Fri Dec 30 23:00:00 EST 1994

OSTI ID:72632

Hayashi, M; Ishiwata, M ^[1]; Minakawa, N; Funahashi, S ^[2]

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1. Hitachi Ltd., Hitachi (Japan)
2. Japan Atomic Energy Research Inst., Tokai Ibaraki (Japan)

Neutron diffraction measurements of lattice strains provide spatial maps of residual stress near welds in ferritic steel socket joints. The highest tensile stresses in the welds are found in axial, radial and hoop direction at the weld root. However, the highest tensile stress in the axial direction is about 110MPa. Balancing compressive stresses are found near the surface of the socket weld fusion zone. Heat treatment at 600 C for 2 hours is sufficient to relieve residual stress in socket welds.

• OSTI ID: 72632
• Report Number(s): CONF-931061--; ISBN 0-87170-506-0
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DATA ANALYSIS
EXPERIMENTAL DATA
FERRITIC STEELS
NEUTRON DIFFRACTION
RESIDUAL STRESSES
WELDED JOINTS