The presented work was aimed at evaluating influence of boron on hardenability steel quantitatively and this effect during complex use with other alloying additives like chromium, vanadium titanium. For purpose, eight melts variable chemical compositions were prepared. From the ingots, cylindrical specimens normalized dimensions according to EN ISO 642:1999 cut out subjected full annealing 1200...

MLX19 stainless maraging steel grade exhibits a mechanical strength/fracture toughness balance within the required range for landing gear applications. However, microstructure after heat treatment still needs to be precisely controlled obtain better repeatability of properties. This work shows that austenitizing is critical stage. The influence austenitization parameters on obtained quenching w...

Background. Improvement of the methodology for computational analysis residual stresses in structural elements reactor is an integral part work when extending service life NPP power units.
 Objective. Determine value technological stress arising baffle a VVER-1000 during welding and postweld heat treatment according to austenitizing mode. To evaluate effect considering dependence transfer ...

aisi 4340 steel is one of the super strong steels that can be selected for different applications. by designing theproper cycles of heat treatment, the optimum microstructure and properties of this steel can be achieved. in thisstudy, different heat treatment cycles were introduced to achieve the optimum microstructure and improve themechanical and magnetic properties of aisi 4340 steel. the re...

Hot rolling can improve the mechanical properties after heat treatment by improving microstructure. The effect of hot (HR) deformation on microstructural transformation G20CrNi2MoA bearing steel in subsequent CQT (carburizing-quenching and tempering) RQT (reheating-quenching processes was studied. results indicate that austenite grain size decreased 20% 45% reduction, number large-angle boundar...