For analysing dynamically loaded structures by means of the finite element method a dynamic constitutive material model is necessary to obtain reliable results. For this purpose dynamic tensile tests were performed with the fine grained steel 20MnMoNi 5 5 (A508 CI. 3) and the austenitic steel X6CrNi 18 11'at different velocities. Smooth round bar specimens of different geometries were used. Dis...

The applications of stainless steel are one of the most reliable solutions in concrete structures to reduce chloride-induced corrosion problems and increase the structures service life, however, due to high prices of nickel, especially in many civil engineering projects, the austenitic stainless steel is replaced by the ferritic stainless steels. Compared with austenite stainless steel, the fer...

For understanding the microstructual details of nano-size oxide particles, three types of ODS ferritic and austenitic steels were examined by high voltage electron microscopy, EDS and AP-FIM. The oxide included Y, Ti and O and showed a shell-like structure with different composition. The shell-like structure depends on crystal structure of the matrix during fabrication process. To evaluate the ...

In this study, we report a procedure for producing syntactic steel foams by melt infiltration of millimeter-sized ceramic microspheres. The gravity-fed infiltration method yields steel foam with uniform distributions of microspheres and negligible unintended porosity. The critical parameters in the manufacturing process are the melt temperature and the preheat temperature of the microspheres pr...

Duplex stainless steels are used to replace austenitic in industrial applications, especially the chemical industry where corrosion resistance chloride-containing media is an important requirement. According literature, niobium has a great influence on transformation of phases these (ferrite, austenite and sigma). Given interest evaluating this property terms wear material, aim study was evalua...

An alternative, subcritical-temperature austenitic nitriding process is evaluated in this paper with the purpose of accelerating the treatment cycle, optimizing the hardness gradient in nitrided layers and seeking improved process control. Comparing to the conventional nitriding processed at ferritic temperature and followed by slow cooling, the alternative process includes nitriding at elevate...

Transition joints between austenitic stainless steels and ferritic low alloy steels are extensively utilized in many high-temperature applications in energy conversion systems. Problems related to the use of such dissimilar metal welds (DMWs) have long been recognized, because of premature failures often occurring during service, connected to thermal stresses generated at the weld interface and...

in the present study, the microstructure and mechanical properties of the dissimilar welding betweenastm a335 low alloy steel and er309l austenitic stainless steel were investigated using the gastungsten arc welding process. the welding of dissimilar materials between astm a335 low alloy steeland er309l austenitic stainless steel was found to have a significant effect on the microstructure when...

Ferritic–austenitic duplex stainless steels are known to offer favorable combinations of good mechanical properties and corrosion resistance be used for structural purposes. Lean grades have already been introduced consideration replace standard 18–8 austenitic in various industrial applications. Ferrite austenite represent different deformation behaviors contribute the resulting fracture tough...