Grade 630 martensitic precipitation hardening stainless steel has a combination of high hardness and strength after suitable heat treatment. The great advantage this grade is that they are usually supplied in the condition treated with solution then aged to achieve sufficient strength. Chosen for research work, AISI samples were subjected salt bath nitriding process. Three chosen shape tapered ...

A growing fatigue crack in metallic materials and structures exhibits multifractal features that inherit signatures of the growth rate behavior material. This study exploits recently established model to quantify characteristic response AISI 410 martensitic stainless steel using an L-shaped bell crank structure. The objective is demonstrate material could be by quantifying fractality crack. fra...

Abstract Short-term heat treatments of steels are used for tools and cutlery but also the surface treatment a variety other workpieces. If corrosion resistance is required, martensitic stainless like AISI 420L or 420MoV typically used. The influence short-term on different metastable states steel was examined reported in this article. Starting from defined microstructural state, investigated ex...

INVESTIGATING THE EFFECT OF WELDING PASTE CONTAINING GRAPHENE NANOSHEETS ON BONDING PROPERTIES WELDED AISI 304 STAINLESS STEEL PRODUCED BY FLUX-CORED ARC

Abstract The medical device industry demands unique identification (UDI) tags on metallic components applied via laser marking. A common issue is that the visual appearance of marking becomes poorly legible over time due to loss contrast. Nanosecond pulsed irradiation was used grow an oxide layer two different martensitic stainless steels AISI 420F mod and 420B compare influences chemical compo...

It is well known that during tensile testing, a part of the mechanical work done on the specimen is transformed into heat energy. The rate of rise and maximum temperature attained depends on the nature of material, its deformation behaviour and test conditions. This paper highlights the application of thermography for characterising various stages of tensile deformation in AISI type 316 stainle...

The corrosion and cell viability behaviors of nanostructured, nickel-free stainless steel implants were studied and compared with AISI 316L. The electrochemical studies were conducted by potentiodynamic polarization and electrochemical impedance spectroscopic measurements in a simulated body fluid. Cytocompatibility was also evaluated by the adhesion behavior of adult human stem cells on the su...

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 present work has been carried out to study the sensitization behavior of AISI 304L austenitic stainless steel weld, fabricated using GTAW (gas tungsten arc welding process). This weld was subjected to post weld thermal aging (PWTA) treatments lying in the sensitization range, viz. 700 ?C for 30 minutes, 500 minutes and 1000 minutes for studying the influence of carbide precipitation on thei...