the mechanical properties and microstructural developments of 321 stainless steel during thermomechanicalprocess were investigated. the repetitive cold rolling and subsequent annealing wereconducted to achieve nanocrystalline structure in an aisi 321 stainless steel. heavily cold rolling at−20°c was conducted to form martensite in metastable austenitic steel. the process was followed byannealin...

The current work was carried out to characterize welding of AISI 310 austenitic stainless steel to Inconel 657 nickel-chromium superalloy. The welds were produced using four types of filler materials; the nickel-based corresponding to Inconel 82, Inconel A, Inconel 617 and austenitic stainless steels 310. Of the two joints involved, this paper describes the choice of welding consumables for the...

A previous constitutive modeling for single-phase steels is extended using the mixing law to predict behavior of hot deformation in dual phase ferritic-austenitic intercritical zone Fe-C-Mn-Si alloys. Mixing considers two phases instead one, so one formula was modified. The constant’s values used represents average same conditions austenitic and ferritic model. amount each determined as functio...

The present paper analyzes the effect of low aluminum additions and hot forging process on microstructure non-metallic inclusions high manganese steels. Four high-manganese steels (HMnS) were obtained by adding contents 1.1 1.5 wt. % in four medium carbon austenitic (0.3 - 0.4 wt% C) with 17 22 Samples as-cast forged to 1100 ?C obtain a whole reduction 70 %. microstructural evolution was studie...

Steels with regulated austenitic transformation during exploitation (RATE) are a new class of ferritic-based tungsten-free tool steels for hot forming. The study obtained quantitative data on the high-temperature strength RATE steel composition after quenching and tempering. stress-strain curves plotted tendency to strain hardening at temperatures 450 750 °C is estimated. It was established tha...

In recent years, great attention has been paid to the development of high manganese austenitic TWIP steels exhibiting high tensile strength and exceptional total elongation. Due to low stacking fault energy (SFE), cross slip becomes more difficult in these steels and mechanical twinning is then the favored deformation mode besides dislocation gliding. Chemical composition along with processing ...

The review paper starts with the applications of liquid metals and then concentrates on lead lead–bismuth eutectic used in Gen IV nuclear reactors accelerator-driven systems. Key points degradation modes austenitic stainless steels ferritic-martensitic steels, candidates for structural components, are briefly summarized. Corrosion metal embrittlement critical issues that must be overcome. Next,...

Pitting corrosion was observed on a high purity Fe-17Cr alloy in 0.02M NaCl solution of pH 6.6 at high anodic potential (+ 550 mVISCE). Potentiostatic electrochemical noise measurements were performed, revealing the presence of a characteristic current noise below stable pitting, differing strongly from that observed 011 a series of AISI 430 type 17% Cr stainless steels, with respect to the fre...

For modern creep-resistant steels, ductility is primarily controlled by cavitation, since brittle rupture dominating during long-term service. In recent years, the present authors have formulated fundamental models for nucleation and growth of cavities that been verified to be able describe experiments austenitic stainless steels. These equations, together with dislocation creep, are used in th...