In this study pure Al and pre-alloyed Al alloy powders (Alumix 231Al-Cu %2.5-Mg %0.5–Si %14) with or without reinforcing elements were used to produce classical Al foam or spherical Al foam with various production parameters by using powder metallurgy route and the results obtained have been discussed. Al2O3 and SiC particles were used as reinforcing elements and TiH2 powders were used as foami...

Like all steel types, HSLA requires a definition and strict practical adherence to welding parameters in order to achieve the required weld quality. Different sources offer a varying array of welding parameters. Although their hierarchical importance can be disputed, their principal definition and practical adherence are prerequisites for the quality of welded joints 1,2 . The analysis of earli...

Niobium is an important alloying element in the design of heat-resistant ferritic stainless steels for automotive exhaust systems. When in solid solution, it improves both the high temperature strength and the resistance to thermal fatigue. However, it also forms several kinds of precipitates during service. These reactions have been modelled, taking into account the multicomponent nature of th...

We examine here the physical aspects and input parameters of a recently published model on the overall transformation kinetics of the bainite reaction in steels.

Very high strain hardening coefficients (=G/23) are observed for aluminum-alloyed face-centered cubic Hadfield steel single crystals under tensile loading. Alloying with aluminum suppressed deformation twinning in two of the three crystallographic orientations studied, and transmission electron microscopy results revealed the existence of dense dislocation walls (sheets) along crystallographic ...

Abstract Heavy plate steels with bainitic microstructures are widely used in industry due to their good combination of strength and toughness. However, obtaining optimal mechanical properties is often challenging the complex multiple phase constitutions caused by different cooling rates through thickness. Here, both conventional advanced microstructural characterization techniques which bridge ...

Low carbon low alloyed high strength steel with the chemical composition suitably designed to support stabilization of retained austenite was used in this work. The processed by conventional annealing for a reference and several different heat thermo-mechanical treatments were further proposed test typical TRIP (transformation induced plasticity), DP (dual phase) QP (quenching partitioning) pro...

Abstract The drawn arc stud welding is widely applied in steel construction, and its procedure can be qualified according to different standards by visual examinations practical destructive tests of the resulting joint. An evaluation material properties usually not requested particularly considering locally limited weld region. Nevertheless, there a need knowledge regarding complex press proces...