Postponing the fracture strain of ultrafine-grained 316LN steel by sequential activations of deformation modes at 77 K

Publication Name

Scripta Materialia


The yield strength of 316LN stainless steel is always insufficient due to the single-phase austenitic structure. We processed bulky specimens with recrystallized ultrafine-grained microstructure by cold rolling and annealing treatments. The specimens are strong and ductile at 293 K as a result of dislocation-dominated plastic deformation process. In contrast, the yield strength was doubled, and the ductility was further enhanced due to the sequentially activated deformation modes at 77 K. The yielding behavior and plastic flow were discussed based on the dramatic change of deformation mechanisms at 293 K and 77 K.

Open Access Status

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Article Number


Funding Number

N2102008 N2102008

Funding Sponsor

Fundamental Research Funds for the Central Universities



Link to publisher version (DOI)