Annealing (glass)

Mechanism (biology)

Deformation (meteorology)

Philosophy

Slip (aerodynamics)

Metallurgy

Materials science

Necking

Strain hardening exponent

Thermodynamics

Physics

Microstructure

Epistemology

Austenite

Composite material

Diffusionless transformation

Deformation bands

Corrosion

Austenitic stainless steel

Scripta Materialia

A remarkable Lüders-type localized deformation having a huge Lüders strain of 0.4 was observed in tensile deformation of an ultra-fine grained austenitic stainless steel fabricated by two-step cold rolling and annealing processes. It was clarified that the Lüders-type deformation in the material was essentially the same as necking caused by plastic instability, but the enhanced strain hardening by deformation induced martensitic transformation realized the stable propagation of the strain localized band, leading to the huge Lüders strain as well as high strength and large ductility of the material.

Mechanism of huge Lüders-type deformation in ultrafine grained austenitic stainless steel