Abstract: In the present investigation, the effects of thermomechanical processing parameters and the steel chemical composition on the ultra fine ferrite formation characteristics were studied. This was programmed relying on the capabilities of strain induced transformation (SIT) phenomenon and applying to different grades of Si-Mn TRIP (Transformation Induced Plasticity) steels. According...

Purpose: Purpose of this paper is investigation of influence of the surface processing by laser method on the cavitation performance of the Fe-Cr-Mn and Fe-Cr-Co alloys. This kind of alloys are frequently used in Polish power plants to routine repairs of damaged blades working under cavitation loading. Design/methodology/approach: Padding welds were tested for three cases: without additional pr...

Metallic glasses are disordered materials that offer the unique ability to perform thermoplastic forming operations at low thermal budget while preserving excellent mechanical properties such as high strength, large elastic strain limits, and wear resistance owing to the metallic nature of bonding and lack of internal defects. Interest in molding micro- and nanoscale metallic glass objects is d...

Diffusionless phase transitions are at the core of the multifunctionality of (magnetic) shape memory alloys, ferroelectrics and multiferroics. Giant strain effects under external fields are obtained in low symmetric modulated martensitic phases. We outline the origin of modulated phases, their connection with tetragonal martensite and consequences for their functional properties by analysing th...

In order to establish the processing conditions achieve target of tensile strength ∼1500 MPa with minimum retained austenite (RA) fraction 10% in hot-rolled 3–4%Mn medium Mn steels, three hot-deformed steels base composition Fe-0.3C–1Si-0.5Al (concentrations wt.%) and variable contents (3 or 4 wt%), Ni (1 2 Mo (0.2 0.4 wt%) V (0 0.2 were processed using both quenching partitioning (QP) reverse ...

Zinc based alloys have recently attracted great attention as promising biodegradable metals. Zinc exhibits moderate degradation rates in biological fluid and the zinc releases during the degradation process is considered safe to human systems. However, these materials exhibit critical limitations in terms of mechanical properties for medical applications. Adding alloying elements as well as gra...

Abstract This paper considers the deformation of Al/B 4 C and NiTi/TiC composites 6061T6 aluminum alloy with double-layer composite coatings reinforced by B TiC particles. Three- two-dimensional dynamic problems are solved numerically using Abaqus/Explicit. The thermomechanical behavior homogeneous matrices substrates is modeled an isotropic elastic-plastic formulation. nitinol matrix implies p...

The features of martensite transformation in Fe (31 32)% Ni melt-quenched alloys are considered. The meltquenching was realized by spinning technique with variable parameters. The influence of the melt-quenching on structural and kinetics transformation parameters is revealed. In particular Ms point is shown to decrease but volume percentage of athermal martensite is found to be invariable with...