Evolution of grain refinement mechanism in Cu-4wt.%Ti alloy during surface mechanical attrition treatment

Correlation of stacking fault energy with deformation mechanism in Cu–(2, 20)Zn alloys

“…The black and yellow rectangles indicate the FIB lift-out position in the Cu-20Zn and Cu-2Zn alloy samples, respectively. The SEM results of Cu-20Zn are similar to those of AISI 304 stainless steel [5] and Cu-4Ti alloy [28].…”

“…The grain refinement of AISI 304 stainless steel with low SFE ( 17 mJ/m 2 ) is controlled by martensitic transformation and mechanical twinning [5]. To eliminate the effect of phase transformation, the grain refinement process of the solid solution Cu–4wt-% Ti alloy with low SFE during SMAT was studied [28]. Planar dislocation and twins are formed in the small strain and low strain rate region adjacent to the coarse grain matrix.…”

Generalised stacking fault energies of copper alloys - density functional theory calculations

“…This is attributed to fine scale precipitation of coherent Cu 4 Ti phase [56,57]. Surface mechanical attrition treatment (SMAT) method employed to Cu-Ti alloys reveals that the density of mechanical twins first increases, and then decreases with a decrease in depth from the treated surface, and twining appears atlow strain and strain rate region [53]. Nosignificant effect to mechanical properties due to vanadium amountis expected.…”

Organic carbonized copper foil facilitates the performance of the current collector for lithium-ion batteries

“…[17][18][19][20] In addition, in the process of the charge and discharge cycle, the collector surface is in contact with the electrolyte for a long time, and the micro decomposition product HF in the electrolyte will corrode the surface of the collector, resulting in the porosity and even separation between the collector and the active substances, and then the performance of the battery will decline. [21][22][23][24][25][26][27] In order to enhance the comprehensive characteristics of a Cu foil collector, efforts have been tried to address these problems, such as surface mechanical attrition treatment, [28][29][30] growing graphene or depositing Au nanoparticles or embedding Si negative particles, [31][32][33][34][35][36] surface roughening and surface nanopore treatment, [37][38][39][40][41] and ultrasonic surface rolling processing (USRP) technology, 42,43 which provided new ideas for the development of a high behavior collector in lithium ion batteries.…”