Abrasive wear properties of experimental metastable duplex stainless steels

Whitefield, David; Bennekom, A. van

doi:10.1016/0043-1648(95)06869-4

Cited by 10 publications

(4 citation statements)

References 4 publications

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“…Impact abrasive wear of duplex CrMnN steels (about 17Cr, 8Mn, 0.2N in mass %) was studied by Whitefield and Bennekom (1996) in comparison with the reference duplex steel SAF 2205 (Cr21Ni6M03). Similar results were obtained for ascast alloys while after heat treatment an improved wear resistance of experimental steels was found as a result of an increased fraction of austenite and enhanced work hardening.…”

Section: Wearmentioning

confidence: 99%

High Nitrogen Steels

Gavriljuk¹,

Berns²

1999

Engineering Materials

385

110

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The use of general descriptive names, registered names, trademarks, ete. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.Typesetting: Camera-ready eopies from authors Cover-Design: MEDIO, Berlin Printed on acid-free paper SPIN 10730039 6213020 5 4 3 2 1 0 to BELA and ISOLDE PrefaceDuring the second half of this century the nitrogen concentration of steel moved in both directions: down in constructional grades by oxygen blowing to prevent brittle fracture upon age hardening at ambient temperature and up in stainless grades to improve strength, corrosion resistance and austenite stability. The gradual recognition of the beneficial effects of this element on the properties of high alloy steels led to a widespread development of high nitrogen steels (HNS) documented by numerous applications and the proceedings of five HNS conferences at LilIe (France) 1988, Aachen (Germany) 1990, Kiev (Ukraine) 1993, Kyoto (Japan) 1996 and HelsinkilStockholm (FinnlandISweden) 1998. The word "high" in HNS is not clearly defined but accounts e.g. for 0.1 mass% of nitrogen in creep resistant steels, 0.9 mass% in stainless grades or 2 mass% in tool steels. "High" best refers to "intentionally raised" by appropriate alloying or by pressure and powder metallurgy. For convenience steel grades are designated by their approximate content of alloying elements in mass% omitting unintentional minor additons of Si, Mn, C, P, S asf. As an example Cr22Ni5M03NO.2 stands for a stainless duplex grade.The present book starts by comparing the effects of nitrogen and carbon on the atomic structure and interaction within the crystallattice. Next the constitution of HNS is investigated leading to specific microstructural features. Based on this background the mechanisms behind the mechanical, chemical and tribological properties of HNS are derived. This concludes the fundamentals treated in chapters one to three. Chapter four comes down to shop practice of manufacturing HNS which, in respect to e.g. melting, hot working, and welding, may be quite different from respective carbon grades. In chapter five, different HNS for special applications are presented like e.g. hardenable steels for stainless bearings, high strength austenitic steels for non-magnetic retaining rings, superaustenitic stainless sheet for the chemical industry or solution nitrided impellers for pumps. Chapter six is an attempt to summarize key aspects of HNS.The book is meant for material scientist working in the field of high alloy steels and also for engineers engaged in materials technology, material selection and design. The work covers a wide scope from the atomic structure to the application of HNS and was written by a metal physicist and an engineer.

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Section: Wearmentioning

confidence: 99%

High Nitrogen Steels

Gavriljuk¹,

Berns²

1999

Engineering Materials

385

110

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“…Such passivation due to an increased pH is preferred in the field as corrosion will be retarded. Whitefield and Bennekom [15] experiments showed that as passivation prevailed current reduced and potential became more negative, on set of passivation is a proven stress-corrosion fatigue mechanism known as strainassisted active path [12].…”

Section: Discussionmentioning

confidence: 99%

Corrosion Study of Steel API 5A, 5L and AISI 1080, 1020 in Drill-Mud Environment of Iranian Hydrocarbon Fields

Farzam

Baghery

Dezfully

2011

ISRN Materials Science

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API 5A and 5L (grades J55, H40, N80, and K55) are used in making drill pipe and well casing. In this paper after studying the rheological and chemical properties of the mud, the effective corrosion parameters were reviewed and studied. The drill pipe corrosion management, with reference to NACE PRO 502-2002 was made and showed that for 50 drilling rigs 120 million dollars is to be spent in 21 years for corrosion damage. Potentiodynamic polarization tests were made to study the drill-pipe (API 5A), well casing (API 5L), a connecting tube (AISI 1020), and drill cable (AISI 1080) corrosion behavior in different pH and mud chemistry; following these tests, the pitting potential at which wash-out of drill pipe occurs was determined.

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“…Es konnte gezeigt werden [15], dass der Verschleißwiderstand steigt, je nä-her die Oberflächenhärte des Materials an die des Abrasives [10]. Lenel und Knott [17] zeigten, dass in instabilen N-legierten CrMn-Stählen der Effekt einer Festigkeitssteigerung durch hohe interstitielle Gehalte mit einer starken Kaltverfestigung, die auf der Wechselwirkung von Stapelfehlern sowie einer Umwandlung in e-oder a-Martensit beruht, verbunden wird. Zudem steigt die Härte des a-Martensits durch den hohen N-Gehalt an.…”

Section: Verschleißunclassified

Nichtrostender Manganhartstahl im Vergleich

Schmalt¹,

Berns²

2004

Materialwissenschaft Werkst

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The well-known Hadfield steel X120Mn12 still has broad applications in the mineral processing industry. Especially under impact loading Hadfield steel displays good wear resistance due to its high cold work ability. However, Hadfield steel is not corrosion resistant. This gap of a wear-resistant and at the same time corrosion resistant steel is closed by the new developed steel X40CrMnN15-17, which can be called high-strength because of a yield strength of 494 MPa.The following investigation characterizes the wear behaviour of steel X40CrMnN15-17 with 0,4 Ma.-% N in comparison to the standard steels X5CrNi18-10 and X120Mn12 under impact and grooving load as well as in single scratch tests. X-ray investigations give no evidence of deformation-induced martensite in the wear surface of steel X40CrMnN15-17. In contrast, small quantities of e-martensite are detected in steel X120Mn12 and also in X5CrNi18-10, which additionally provided large quantities of a-martensite.Application areas of steel X40CrMnN15-17 are seen both in the wear protection sector as e.g. impact plates and within the range of crash relevant construction units for the automotive industry.

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Abrasive wear properties of experimental metastable duplex stainless steels

Cited by 10 publications

References 4 publications

High Nitrogen Steels

High Nitrogen Steels

Corrosion Study of Steel API 5A, 5L and AISI 1080, 1020 in Drill-Mud Environment of Iranian Hydrocarbon Fields

Nichtrostender Manganhartstahl im Vergleich

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