Abstract

Tensile properties and microstructural evolutions of Fe–22Mn–1.0C (wt%) twinning‐induced plasticity steel are investigated in the temperature range from 293 to 443 K. An unexpected enhancement of strength and ductility is observed at the elevated temperature of 443 K (≈400 MPa ultimate tensile strength and ≈10% true strain improvements). The twinning capability is still kept stable with the increasing temperature, and the premature fracture is postponed by suppressing dynamic strain aging effect. As a result, the synchronous improvement of strength and plasticity is achieved at high deformation temperature.

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