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B. E. Wilde

Other affiliations: Bethlehem Steel
Bio: B. E. Wilde is an academic researcher from Ohio State University. The author has contributed to research in topics: Corrosion & Intergranular corrosion. The author has an hindex of 11, co-authored 24 publications receiving 245 citations. Previous affiliations of B. E. Wilde include Bethlehem Steel.

Papers
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TL;DR: In this article, a systematic analytical electron microscopy (AEM) study was conducted on a series of AISI 304 stainless steels to determine the mechanisms by which N affects Cr carbide precipitation and the associated Cr depletion at grain boundaries.
Abstract: A systematic analytical electron microscopy (AEM) study was conducted on a series of AISI 304 stainless steels (SSs) to determine the mechanisms by which N affects Cr carbide precipitation and the associated Cr depletion at grain boundaries. Electrochemical potentiokinetic reactivation (EPR) tests conducted on the steels indicate that N additions up to 0.16 wt% retard sensitization, but above 0.16 wt%, they promote it. The microstructural investigation revealed that an increasing N content consistently caused the bulk diffusion coefficient of Cr in austenite to decrease and the grain boundary Cr concentration to increase. The increase in the degree of sensitization (EPR tests) for Cr contents above 0.16 wt% was found to result from Cr carbides precipitating discontinuously, which resulted in grain boundary migration and, hence, wider Cr-depleted zones.

38 citations

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TL;DR: In this paper, the effect of nitrogen is incorporated into the thermodynamic model by means of the free energy interaction coefficients of nitrogen with chromium and carbon, and a mechanism by which nitrogen additions affect the sensitization kinetics of AISI 304 stainless steels is proposed.

24 citations

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TL;DR: In this paper, slow strain rate tests were conducted on sensitized AISI 304 stainless steels (SS) with varying nitrogen and carbon contents in order to study their susceptibility to stress corrosion cracking (SCC).

21 citations

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TL;DR: In this paper, the authors developed a stainless steel with superior resistance to intergranular stress corrosion cracking (IGSCC), intergranul corrosion (IGC), and pitting corrosion.
Abstract: As a part of a study to develop a stainless steel (SS) with superior resistance to intergranular stress corrosion cracking (IGSCC), intergranular corrosion (IGC), and pitting corrosion, an...

19 citations

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TL;DR: In this paper, the effect of silicon additions to an 18Cr-8Ni stainless steel (SS) on the resistance to pit initiation in halide media is described, and the authors show that silicon adds to an SS can improve the pit initiation resistance.
Abstract: This paper describes the effect of silicon additions to an 18Cr-8Ni stainless steel (SS) on the resistance to pit initiation in halide media. Electrochemical polarization measurements cond...

19 citations


Cited by
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Abstract: This article presents an overview of the developments in stainless steels made since the 1990s. Some of the new applications that involve the use of stainless steel are also introduced. A brief introduction to the various classes of stainless steels, their precipitate phases and the status quo of their production around the globe is given first. The advances in a variety of subject areas that have been made recently will then be presented. These recent advances include (1) new findings on the various precipitate phases (the new J phase, new orientation relationships, new phase diagram for the Fe–Cr system, etc.); (2) new suggestions for the prevention/mitigation of the different problems and new methods for their detection/measurement and (3) new techniques for surface/bulk property enhancement (such as laser shot peening, grain boundary engineering and grain refinement). Recent developments in topics like phase prediction, stacking fault energy, superplasticity, metadynamic recrystallisation and the calculation of mechanical properties are introduced, too. In the end of this article, several new applications that involve the use of stainless steels are presented. Some of these are the use of austenitic stainless steels for signature authentication (magnetic recording), the utilisation of the cryogenic magnetic transition of the sigma phase for hot spot detection (the Sigmaplugs), the new Pt-enhanced radiopaque stainless steel (PERSS) coronary stents and stainless steel stents that may be used for magnetic drug targeting. Besides recent developments in conventional stainless steels, those in the high-nitrogen, low-Ni (or Ni-free) varieties are also introduced. These recent developments include new methods for attaining very high nitrogen contents, new guidelines for alloy design, the merits/demerits associated with high nitrogen contents, etc.

1,668 citations

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TL;DR: In this article, the effect of heat input on the microstructure and mechanical properties of gas tungsten arc welded 304 stainless steel (SS) joints was studied and the results indicated that the joints made using low heat input exhibited higher ultimate tensile strength than those welded with medium and high heat input.

241 citations

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TL;DR: In this article, the influence of s-phase on the behavior of duplex stainless steels was evaluated using two tests: double loop electrochemical potentiodynamic reactivation (DLEPR) and slow strain rate test.

181 citations

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TL;DR: Pitting corrosion studies were carried out on cold worked (5, 10, 15, 20, 30, and 40%) nitrogen-bearing (0.05, 0.1% and 0.22% N) type 316L stainless steels in neutral chloride medium as mentioned in this paper.

166 citations

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TL;DR: In this paper, the electrochemical potentiokinetic reactivation (EPR) test is used to assess the susceptibility of an alloy to intergranular, pitting and crevice corrosion.

164 citations