Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8017111 | Materials Letters | 2016 | 4 Pages |
Abstract
In the present study, severe plastic deformation (SPD) has been used to joint dissimilar materials and form a multilayer hybrid material with nano- and submicrocrystalline structure. The evolution of the structure and strength of steel/vanadium alloy/steel hybrid material during SPD by high-pressure torsion (HPT) has been studied. The HPT of three-layer metal block with from ¼ to 5 revolutions leads to the formation of firm joint of all layers. Deformation twists at steel/vanadium alloy boundaries are observed in the hybrid material subjected to HPT with the number of revolutions N=1. After HPT with N=5, the fragmentation of all vanadium alloy layer into thinner layers, which are rounded, vortex-like in shape, is observed. In this case, the microhradness of steel layers (measured at the sample midradius) increases by 3.2-3.5 times; the hardness of vanadium alloy layer increases by ~2.0 times.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
S.O. Rogachev, R.V. Sundeev, V.M. Khatkevich,