In order to determine the potential benefits and limitations of aluminide coatings, coatings made by chemical vapor deposition (CVD) on Feand Ni-base alloy substrates are being evaluated in various hightemperature environments. Testing of coatings on representative ferritic (Fe-9Cr-1Mo) and austenitic (type 304L stainless steel) alloys has found that high frequency thermal cycling (1h cycle tim...

This conference paper briefly discusses different techniques for measuring the evolution of the martensite content in cold-rolled stainless steel 301LN sheets under mechanical loading. Three methods are employed to measure the martensite content: (1) micrography, (2) bulk magnetic induction, and (3) local magnetic permeability measurements. The first two methods require the extraction of sample...

A comprehensive experimental study on the structural behaviour of stainless steel T-stubs in Grade EN 1.4003 ferritic and employing A4–80 bolts is reported this paper. total 17 various geometric configurations including both single double bolt rows were tested under monotonic tension. The focus tests was failing predominantly mode 1. Auxiliary tensile performed coupons extracted from T-stub fla...

The stability and design of fixed-ended stainless steel equal-leg angle section members subjected to axial compression are studied herein. An experimental investigation, comprising material testing, initial geometric imperfection measurements tests on hot-rolled austenitic columns is first presented. test results, in combination with existing data collected from the literature, then used for va...

in this study, the application of gray relational analysis (gra) and taguchi method in multi-criteria process parameters selection of turning operation has been investigated. the process responses under study are material removal rate (mrr) and surface roughness (sr); in turn, the input parameters include cutting speed, feed rate, depth of cut and nose radius of the cutting tool. the proposed a...

Laser alloying is an effective method to form functional surface layers (coatings) on metallic materials, particularly stainless steels. Unique phase balance, dislocation substructure, and a possibility obtain gradient microstructures after laser slow down the degradation increase wear resistance. In this work, optimal parameters of their effects microstructure properties were investigated for ...

Additive manufacturing of Duplex Stainless Steels (DSS) and Super (SDSS) has been successfully demonstrated using LPBF in recent years, however, both alloys feature an almost fully ferritic microstructure the as-built condition due to fast cooling rates associated with Laser Powder Bed Fusion (LPBF) process. Blends DSS SDSS powders were formulated austenitic stainless-steel 316L powder, aiming ...

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...