Investigation of sample size effect on the deformation heterogeneity and texture development during equal channel angular pressing

Theoretical and experimental investigation of thermal and oxidation behaviours of a high speed steel work roll during hot rolling

“…Except the experimental tools, computational model is fortunately nowadays a powerful and reliable tool for simulating different thermo-mechanical-metallurgical processes from macro-, micro-to nano-scale size, with quick development of computer skills [9][10][11]. To date, a large number of investigations have already been successfully conducted on modelling thermal behaviours of work rolls during hot rolling.…”

An Investigation of Interface Bonding of Bimetallic Foils by Combined Accumulative Roll Bonding and Asymmetric Rolling Techniques

“…ECAP is a very promising SPD technique for producing ultrafine-grained materials and has been used to investigate the formation of submicron grain structures in Al alloys deformed to ultra-high plastic strains by Gholinia et al [10] They pointed out that the most efficient processing route for forming a submicron grain structure is to maintain a constant strain path and that the least effective path is to reverse the shear each alternate cycle by rotating the billet through 180 deg. Besides investigations involving physical experiments, the crystal plastic finite element simulation method has also been used to investigate deformation heterogeneity and texture development during ECAP process by Deng et al [11] The HPT method refers to the processing of metals, where samples are subjected to a compressive force and concurrent torsional strain. HPT followed by annealing has been used to produce ultrafine-grained copper by Schafler and Kerber [12] who found that the subgrain structure vanishes and the strength becomes governed by the recrystallised grain structure that contains many annealing twins due to the progressive annihilation of dislocations.…”

Study on the Hydrogen Embrittlement of Nanograined Materials with Different Grain Sizes by Atomistic Simulation

“…With the importance of GBs in H-related failure, increasing the GB density via grain refinement is anticipated to affect the susceptibility of materials to intergranular HE. Severe plastic deformation (SPD) techniques, such as high-pressure torsion (HPT) [32][33][34][35][36][37], accumulative roll bonding (ARB) [38][39][40], equal channel angular pressing (ECAP) [41][42][43] and dynamic plastic deformation (DPD) [44] have been widely applied to achieve grain refinement, modify the texture and improve the mechanical properties of various metallic materials. In comparison with other SPD techniques, HPT is much more efficient in refining the microstructure and improving the mechanical strength.…”