Influence of re-ultrasonic impact treatment on fatigue behaviors of S690QL welded joints
Source abstract
Abstract
The effects of re-ultrasonic impact treatment with different fatigue cycle intervals between two UITs on the fatigue life of S690QL cruciform welded joints were investigated. Fatigue life, residual stress, SEM micrographs of specimen cross profile, and fatigue fracture were determined. Fatigue determination results indicated that re-UIT increased the total fatigue life when the fatigue cycle interval between two UITs was appropriate. The contribution of residual stress produced by re-UIT to fatigue life was not significant at room temperature. The damages caused by UIT were confirmed with optical microscope and scanning electron microscope. Considering that UIT could close cracks, the effect of re-UIT on fatigue life strongly depended on the competition between the role of closing cracks and the formation process of new damage.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Surface Treatment and Residual Stress · Metal Alloys Wear and Properties · Fatigue and fracture mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (22)
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