Structurally induced enhancement in corrosion resistance of Zr–2.5%Nb alloy in saline solution by applying ultrasonic impact peening

Enhanced fatigue behavior of powder metallurgy Ti–6Al–4V alloy by applying ultrasonic impact treatment

“…The curvature radius (R¼20 mm) of the pin surface is close but slightly lower than that of the gauge section of the treated specimen. The induced frequency of impacts f I in this loading scheme was about 3 kHz [27][28][29][30]. It is of importance that high transversal constituent of load was applied to the treated surface of specimen.…”

Corrosion of Ultrafine Grained Materials by Severe Plastic Deformation, an Overview

“…[108][109][110]112,127,155,[184][185][186] Recently, other SPD processing emerged such as hydraulic extrusion (HE), 111) severe-or cryo-cold rolling. 45,75,76) These SPD processing generates UFG metals in bulk form, but in other processing, UFG or nanocrytallization can be achieved in the surface layer using high power shot blast, 78) ultrasonic peening, 77,79,80) surface mechanical attrition treatment (SMAT), [72][73][74] burnishing/brushing, [82][83][84] and friction stir processing (FSP). 85,86) Table 2 lists the papers reporting on the corrosion behavior of UFG materials by speci cally SPD.…”

“…Most of UFG materials in the list are pressed by ECAP, HPT, ARB as the core of SPD technology, but the recent emerging SPD for surface modi cation such as surface mechanical attrition treatment (SMAT), 21,[72][73][74] cryorolling, 75,76) high-power shotblast, [77][78][79][80][81] burnishing, [82][83][84] friction stir processing (FSP) 85,86) are included. However, nanocrystalline metals, which are fabricated by the so-called bottom-up approaches such as magnetron and DC spattering, powder consolidation by high-energy ball milling are excluded in this Better=Corrosion resistance increases with grain size reduction, Worse=Vise versa.…”

Influence of Shear Component of Load Under the Friction on a Structure–Phase State and Wear of Surface Layer of Steel 1045

“…Залежності фізичного розширення дифракційних максимумів від тангенса кута відбиття для зразків сталі 45 у вихідному стані (0) і після випробувань з різною величиною проковзування контактних поверхонь: 3% (1), 20% (2), 40% (3). [10,11,33,34], де описано формування текстури на поверхні металевих матеріялів внаслідок застосування зсувних компонент навантажень при ÓЗÓО [10,33], SMAT [11] та поверхневому вигла-джуванні [34].…”