FATIGUE CRACK INITIATION PROPERTIES OF WELDED AND STRESS RELIEVED HY130 STEEL

Authors
  1. Nikiforuk, T.P.
  2. Peters, B.F.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
Fatigue initiation studies were performed on a potential hydrofoil material, HY130 steel, using a Tatnal-Krause type fatigue testing machine. The welded HY130 steel shows fatigue endurance properties of 480 MPa (70 Ksi) when in the ground and polished condition, the condition which would be present in the highly stressed areas of a foil. In the as-welded condition, the material shows an endurance limit of 240 MPa (35 Ksi) at a stress ratio of R = + 1/2. Local high residual tensile stresses, due to welding, have little, if any, effect on the fatigue initiation properties of the welded HY130 steel specimens.
Report Number
MATERIAL-77-A —
Date of publication
15 Dec 1977
Number of Pages
29
DSTKIM No
78-01033
CANDIS No
81745
Format(s):
Hardcopy;Originator's fiche received by DSIS

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