in this study, the four cr-mn-(ni-free) austenitic steels were fabricated by vacuum induction furnace. then plates with 10 mm thickness were fabricated by hot-rolling. corrosion behaviour of the four cr-mn steels in 0.1 m h2so4 solution was investigated using by open-circuit potential, potentiodynamic polarization, and electrochemical impedance spectroscopy (eis). the results indicated that the...

Solid state joining techniques are increasingly used in different types of materials, this work TP347HFG austenitic stainless steel will be welded with HiPerFer ferritic stainless-steel alloy due to their similarity properties some extent after making heat treatment addition difference cost which save for economic reasons. In work, a three-dimensional finite element model was developed. The the...

CRA-lined pipelines, i.e. pipes with an inner pipe of a corrosion resistant alloy inside of a ferritic steel pipe carrying the hoop stress, pose a challenge to inspect with conventional in-line inspection technologies. Existing UT technology is not able to inspect through the interface of a CRA and a ferritic steel component. Additionally, current MFL technology is not able to sufficiently magn...

Laser additively manufactured duplex stainless steels contain mostly ferrite in the as-built parts due to rapid solidification of printed layers. To achieve microstructures (ferrite and austenite roughly equal proportions) and, thus, a good combination mechanical properties corrosion resistance, an austenitic steel powder (X2CrNiMo17-12-2) super (X2CrNiMoN25-7-4) were mixed different proportion...

This article deals with non-destructive evaluation of austenitic stainless steels, which are used as the biomaterials in medical practice. Intrinsic magnetic field is investigated using the fluxgate sensor, after the applied plastic deformation. The three austenitic steel types are studied under the same conditions, while several values of the deformation are applied, respectively. The obtained...

Introduction The mechanical properties of austenitic stainless steels, including the low cyclic fatigue behavior have been a subject of numerous studies [1-8]. Nitrogen addition, in general, increases the fatigue strength by decreasing the stacking fault energy of austenitic stainless steels [6]. The stacking fault energy has a strong influence on the cross slip difficulty, thus it affects the ...

Ferritic stainless steels have been widely used to substitute austenitic because of their lower cost and higher deep drawing capacity. However, failures, such as shear fracture, observed in parts with small radii during the process applications where both bending stretching occurs. Conventional techniques, failure criterion consideration, finite element method, forming limit diagram, are unable...

The present paper reports a thorough experimental investigation into the net section failure behaviour and capacity of stainless steel staggered bolted connections in tension. testing programme was carried out on 31 connection specimens, with 18 made austenitic (grade EN 1.4301), 7 duplex 1.4462) 6 ferritic 1.4016). geometric parameters, including transverse pitches, bolt hole patterns were var...

This paper proposes a deep-learning framework, specifically, Deep Belief Network (DBN), for studying the web crippling performance of cold-formed stainless steel channel sections (lipped and unlipped as well fastened unfastened) with centered offset holes under end-two-flange loading condition. G430 ferritic, S32205 duplex 304 austenitic grades are considered. A total 17,281 data points trainin...