Abstract
Rotary swaging (RS), as a widely used industrial method for severe plastic deformation (SPD), is a near net forming process which uses high-speed pulse hammer of multi-hammer to process solid shaft parts or hollow variable cross-section forgings. Initially RS is mainly used to manufacture difficult-to-deform metals with poor plasticity (such as W and Mg alloys, etc.). Recently, because RS process can enable large hydrostatic stresses and facilitate the accumulation of large strain, it is also allowing for high-throughput mass production of different metals with enhanced mechanical properties. This paper first introduces the RS working principle and unique characteristics, then systematically summarized the microstructural characteristics (grain size, texture, etc.), mechanical properties (such as strength, ductility, etc.), physical and chemical properties of various ultrafine grained metals prepared by RS, finally compares the advantages and disadvantages of swaging with other deformation methods, and looks forward to the future development and application fields of rotary swaging.
NSTL
Elsevier