Current issue

This figure illustrates the fabrication and processing scheme of model steel walls produced using different WAAM modes (standard GMAW and coldArc). It also presents their mechanical properties, including microhardness and tensile behavior, highlighting the effects of heat treatment.

Using the molecular dynamics method, a study was conducted on the influence of the mean grain size and excess energy on the melting temperature of nanocrystalline aluminum.

Calculation of the elastic field characteristics at Z = 3000, R = 200, describing the formation of a layer parallel to the habit plane.

Tensile properties of the TNZ alloy produced as a small laboratory ingot (conditions 1 and 2) and a large-sized industrial ingot (conditions 3 and 4) after forging and heat treatment.

Treatment of Bi1.8Pb0.2Sr2CaCu2Oу at 700oC in an argon atmosphere leads to an increase in their critical temperatures up to 99 K.

The evolved microstructure was dominated by the martensitic phase, though it also contained a minor fraction (≈0.1%) of retained austenite. It was also shown the orientation relationship between the martensite and austenite deviated from the “classical” Kurdjumov-Sachs (K-S) one and could be described in terms of a mixture of the K-S and Nishiyama-Wasserman (N-W) relationships. This observation was attributed to the essential orientation spread within the prior austenite grains. Moreover, a pronounced variant selection was revealed in the martensitic phase. The reconstruction of the microstructure of the high-temperature austenite had demonstrated that the latter observation was likely due to the pronounced grain refinement and the development of a distinct B-B {110}112 simple shear texture occurring in the austenitic phase during FSP. It is believed this study broadens our current understanding of martensitic transformations in steels.

The graphene/Cu composite coating increases the ultimate tensile strength of the copper surface by 2 times, and the hardness of this surface by 6%.

1. The presence of a PLGA layer on a MAO coating led to a substantial enhancement in adhesive strength, with an increase of approximately 2 times and increase in microhardness by 1.2 times. 2. The corrosion resistance of MAO-PLGA increased because corrosion current density decreased to 1.40×10-7 A/cm2 and polarization resistance increased to 4.51×105 Ω∙cm2.

The thermal conductivity properties of the graphene-nanotube film/Al2O3 interface are investigated using the molecular dynamics method. Both films and nanoparticles of Al2O3 are considered.

The implementation of the deformation thermocyclic treatment with the gradual decrease in the heating and rolling temperatures and subsequent cooling of the blank in water followed by tempering at 550 ℃ was an effective way to refine the microstructure and obtain high both ultimate tensile strength of up to 900 MPa and impact toughness without brittle fracture down to the test temperature of -70 ℃.

Graphical abstract shows the pre-martensitic state of the FCC lattice in the CrMnN austenitic stainless steel.

XRD patterns for Al–6 wt.% Cu alloy