The mechanics of High Pressure Compressive Shearing with application to ARMCO® steel

Texture evolution in high-pressure torsion processing

“…High pressure compressive shearing (HPCS) was introduced in 2019 [39] and it is essentially a modified version of high pressure shearing (HPS) as first proposed in 2009 [37]. Processing by HPS entails applying a large shear strain by displacing sheet or rod samples by pushing a plunger from one side to the other under high pressure (see Figure 42d) [37].…”

“…More details on the fundamentals and applications of HPT processing and the historical development is given in other reports [31][32][33]. Several modified HPT processing methods were proposed over the last decade such as highpressure tube twisting (HPTT) [34], tube high-pressure shearing (t-HPS) [35,36], highpressure-double-torsion (HPDT) [34], high-pressure sliding (HPS) [37], reversal high pressure torsion (RHPT) [38] and high pressure compressive shearing (HPCS) [39] in order to provide solutions to the limitations of HPT processing such as the inhomogeneity of the shear strain across the disc radius or the smallness of the sample [40]. Recently, it was demonstrated that HPT processing is an excellent tool for the consolidation of metal powders [41][42][43] and for fabricating hybrid systems in order to ultimately obtain metal matrix nanocomposites (MMNCs) such as Al-Mg [44][45][46], Al-Cu [47] and Zn-Mg [48].…”

In Situ Synchrotron X‐Ray Diffraction during High‐Pressure Torsion Deformation of Ni and NiTi

“…These findings could help with the discussion of experimental results reported in several works, for example, see various studies. [ 48,49 ]…”

“…These findings could help with the discussion of experimental results reported in several works, for example, see various studies. [48,49] Another issue which is often discussed when conducting HPT deformation to unlimited strains is that there have to be dynamic relaxation/recovery effects; otherwise, the materials must be pulverized due to successive destruction of the crystal lattice. This is intrinsically indicated by the saturation of the in situ flow curve determined by torque measurement during the HPT process (e.g., see Figure 1 in the study by Schafler et al [44] ).…”

Simulation of CuE Copper Alloy in a Closed-Die Multi-Axial Forging Tool

“…Ultrafine grain structure can result in increased strength, higher fatigue limits, and increased toughness [2-3]. There are several methods to create these materials [4][5][6]. Those that apply significant shear stress on the material are called severe plastic deformation (SPD) processes [7-9].…”