4.7 Article

Precipitation behavior of k-carbides and its relationship with mechanical properties of Fe-Mn-Al-C lightweight austenitic steel

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Summary: The multi-stage work hardening process of an Fe-Mn-Al-C lightweight austenitic steel was studied experimentally, with a focus on the critical role of kappa-carbides. The inhibition of kappa-carbides on the motion of dislocations contributes to high yield strength. The shearing of kappa-carbide particles by moving dislocations causes slip plane softening, leading to the formation of planar-slip dislocation substructure and the occurrence of work hardening rate recovery and plateau stages.

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