Abstract
Improving the quality of metal products by modifying the structure is one of the main trends in materials science. However, the main problem of such materials is the small final size of the workpieces and low technological production. The paper presents data of the experimental production of ultra-fine-grained structure in a long rod of steel grade AISI 321 by radial-shear rolling. With a grain size of 300-600 nm, the mechanical properties and micro-hardness increase by more than 2 times while having a heterogeneity across the bar section.
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