Study fatigue crack initiation in TiB2/Al-Cu-Mg composite by in-situ SEM and X-ray microtomography
Source abstract
Abstract
Abstract In this work, the fatigue initiation in a particle-reinforced aluminium matrix composite was investigated. The fatigue cracks mostly initiate at multiple sites associated with TiB2 and second phases (S/θ). Only few cracks initiate from individual TiB2, and they are caused by matrix fracture close to the high density dislocation zones around TiB2. Furthermore, the growth capability of initiated cracks is dependent on their stress intensity factors at crack tip. Only crack initated from largest-sized (S/θ + TiB2) cluster is developed into main crack. During main crack evolution, the small crack grows along slip traces and retarded by grain boundaries and/or TiB2.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloys Composites Properties · Microstructure and mechanical properties · Aluminum Alloy Microstructure Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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