Mechanism of yield strength anomaly of Alloy 617
2009
Abstract Anomalous increase in tensile yield strength (YS) of Alloy 617 at 800 and 900 °C has been investigated using different analytical tools. The enhanced YS has been attributed to the formation and accumulation of Cr 23 C 6 and Mo 23 C 6 precipitates, and development of pinned dislocations, dislocation pile-ups, and subgrains in the vicinity of the grain boundaries.
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