Abstract
Low-temperature deformation and fracture behaviors are studied for a quenching and partitioning (Q&P) steel by interrupted tensile tests and X-ray diffraction (XRD). The austenite stability decreases significantly from 298 K to 223 K, while further cooling to 77 K does not cause greater instability. The yielding, work hardening, and fracture behaviors are found to change under the influence of austenite stability at low temperatures.
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