Fatigue crack growth behavior of beta-annealed Ti–6Al–2Sn–4Zr–xMo (x= 2, 4 and 6) alloys: Influence of microstructure and stress ratio
Source abstract
Abstract
The influence of microstructures (beta grain size, alpha/beta colony size and width of a lath) and stress ratios (R = 0.1, 0.7) on fatigue crack growth (FCG) behavior of beta-annealed Ti624x (x = 2, 4 and 6) alloys was investigated. The FCG rate curves, crack paths, and the plastic zone ahead of the crack tip were compared. The reducing FCG resistance from Ti6242 to Ti6246 was found to stem from decreasing alpha/beta colony size. Increasing stress ratio also reduced crack deflection and crack closure, and thus decreased the FCG resistance. The relevant mechanisms were discussed in terms of Kma and crack closure effect. (C) 2015 Elsevier Ltd. All rights reserved.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Titanium Alloys Microstructure and Properties · Aluminum Alloy Microstructure Properties · Fatigue and fracture mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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