Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 799, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.140057
Keywords
Friction stir processing; Hall-petch effect; Grain refinement; Yielding behavior; Transformation induced plasticity
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Friction stir processing was used to enhance the mechanical properties of lightweight steel by developing fine grain structures with high austenite stability. An anomalous effect of grain refinement on yield stress was discovered, which was attributed to the dominant strain accommodative mechanisms in the initial and processed microstructures.
Friction stir processing was utilized for enhancing mechanical properties of a lightweight steel through development of fine grain structures with high austenite stability. Interestingly, an anomalous effect of grain refinement on yield stress was found which was justified considering the dominant strain accommodative mechanisms in the initial and processed microstructures.
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