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Monday, August 10, 2020 | History

2 edition of Effects of rare earth additions on plasma nitriding of EN40B steel found in the catalog.

Effects of rare earth additions on plasma nitriding of EN40B steel

Damien Cleugh

Effects of rare earth additions on plasma nitriding of EN40B steel

by Damien Cleugh

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  • 17 Currently reading

Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D) - University of Birmingham, School of Engineering, Department of Metallurgy and Materials Science.

Statementby Damien Cleugh.
The Physical Object
Pagination1 v. (various pagings) ;
ID Numbers
Open LibraryOL21874506M

Effects of rare earth metals addition and aging treatment on corrosion resistance and mechanical properties of super duplex stainless steels were investigated using optical/SEM/TEM metallographic examination, an X-ray diffraction test, a potentiodynamic anodic polarization test and a tensile test. The performance of the experimental alloy with % REM addition was compared with commercial. Fig. 2 shows the SEM micrographs of duplex stainless steel after plasma nitriding at various temperatures. The visibility of various nitrides and other phases formed, improves with increase in temperature. Higher the nitriding temperatures, better is the etching by plasma. The surface appears to be smooth in the PN sample and the.

Plasma nitriding Plasma nitriding (Direct Current plasma nitriding - DCPN) is based on the creation of gaseous plasma under vacuum conditions. The process gases can be selected in whatever ratio suits the required surface metallurgy. In other words, the formation of the compound layer can be single phase, dual phase, or diffusion zone only. 2. bi: The influence of the mode of plasma generation on the plasma nitriding behavior of a micoralloyed (i.e. microalloyed) steel, PhD thesis, University of Wollongong, Wollongong, Australia 3. , : Plasma nitriding treatment of high alloy steel for bearing components, NTN Technical Review No 78, , p

This paper discusses the effect of plasma nitriding and the thickness of compound layer in particular, for the En steel. The experiments were carried-out on steel rod samples which were plasma nitrided with formation of varying amount of thickness of compound white layer and . Tool steels suitable for nitriding include: H13 tool steel P20 tool steel D2 tool steel H10A tool steel H21 tool steel. Many of the above steels may be marketed under trade names or as equivalent foreign specifications, please call if you need advice on the suitability of a steel for nitride hardening.


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Effects of rare earth additions on plasma nitriding of EN40B steel by Damien Cleugh Download PDF EPUB FB2

Some theories for the mechanism by which RE additions have an effect suggest that they can act as catalysts for the reactions that take place in the treatment atmosphere. In plasma nitriding, this is reported to provide an increased supply of nitrogen to the component surface.

Thus, there is better nitrogen uptake by the component by: Download Citation | Effects of rare earth additions on nitriding of EN40B by plasma immersion ion implantation | Reports over the last two decades have shown the potential for improving existing. Effects of rare earth additions on plasma nitriding of En40B steel Author: Cleugh, Damien.

ISNI: X Awarding Body: University of Birmingham Current Institution: University of Birmingham Date of Award: Availability of Full Text.

As an active metal, chromium is easy to form oxides film on the surface, which acts as an obstacle to the nitrogen diffusion in plasma nitriding. Rare earth (RE) was introduced into the conventional plasma nitriding (CPN) to improve the nitriding behavior.

Chromium coatings were treated by CPN and rare earth plasma nitriding (REPN) at °C for 5 and 10 hours by: 1. In the present investigation, plasma nitriding of 38CrMoAl steel has been carried out in order to investigate the effect of introducing rare earth elements on the process and on the structures and.

Before plasma nitrocarburizing, the steel was solution heat treated at ºC for 1 h followed by oil cooling. The microstructure of the quenched M50NiL WANG Xing′an et al., Effect of rare earth addition on microstructure and corrosion behavior of plasma … steel is martensite with bulk hardness of HV 30CrMnSiA steel was plasma nitrided in an atmosphere of 50% N 2 + 50% H 2 at °C for 4 h with and without rare earths addition, and the effects of rare earth elements on the microstructure and properties were investigated.

The specimens nitrided with and without rare earths addition were characterized by optical microscope, scanning electron microscope, X-ray diffractometer. It clearly indicates that the compound layer for samples with RE La addition is much thicker than that of NT at the same conditions.

Therefore, rare earth has the effect of saving energy and improving the efficiency in salt bath nitriding. Download: Download high-res image (KB) Download: Download full-size image; Fig.

The thickness of compound layer vs. nitriding time with and without addition. Effects of Rare Earth Metals on Steel Microstructures Article (PDF Available) in Materials 9(6) May with 1, Reads How we measure 'reads'. In addition, thickness of this layer have increased by Effects of DC plasma nitriding parameters The response of steel to plasma nitriding mainly depends on its composition [7].

Further to this, though plasma nitriding is influenced by process factors such as time, temperature, chemical composition of the treatment gas, working pressure.

The quenched M50NiL steel was plasma nitrided at °C with and without rare earth (RE) addition. The effect of pure RE lanthanum (La) on the surface properties of plasma nitrided M50NiL steel. The quenched M50NiL steel was plasma nitrided at °C with and without rare earth (RE) addition.

The effect of pure RE lanthanum (La) on the surface properties of plasma nitrided M50NiL steel was investigated using pin-on-disk tribometer. The treated surfaces were characterized using SEM equipped with EDS, XRD and microhardness tester.

indicated that the addition of rare earth metals had a positive effect on the abrasion behaviour of G17CrMo cast steel. Keywords: Wear resistant alloys, Cast steel, Rare earth metals, Miller test, Surface profile 1. Introduction Material properties dictate the choice of cast steel.

Nitriding and carburizing are important methods to strengthen the surface of iron-based alloys. Addition of rare earth (RE) during nitriding or carburizing will reduce processing time, increase thickness, improve microstructures and mechanical properties of modified surface layers.

There are extensive applications for RE-nitriding and RE-carburizing in experimental researches and industrial manufacture. EN40B Nitriding Steel EN40B nitriding steel stockholders and suppliers, delivering to the whole of the UK.

EN40B is a chromium molybdenum steel specification usually supplied in the hardened and tempered ‘T’ condition, which offers high wear resistance together with good toughness and ductility. EN40B in T condition has a tensile of [6] D. Cleugh, C. Blawert, J. Steinbach, H. Ferkel, B.L.

Mordike, T. Bell, Effects of rare earth additions on nitriding of EN40B by plasma immersion ion implantation, Surface. The effects of Er additions on the microstructure and tensile properties of cast Al–15Zn–Mg–Cu aluminum alloy have been investigated.

The results show that by adding 1 wt% Er grain refiner in the cast alloy, the grains can be refined to a fine degree. Effect of Pulse Repetition Time on Pulsed Plasma Nitriding of AISI Steel J.

Arul Mozhi Varman* 1, Huchel Uwe2, M. Balasubramanian 1Department of Metallurgical and Materials Engineering, Indian Institute of Technology-Madras, Chennai,Tamilnadu, India. Abstract. The oil-quenched 30CrMnSiA steel specimens have been pulse plasma-nitrided for 4 h using a constant 25% N % H 2 gaseous mixture.

Different nitriding temperatures varying from to °C have been used to investigate the effects of treatment temperature on the microstructure, microhardness, wear, and corrosion resistances of the surface layers of the nitrided specimens. Samples of duplex stainless steel were plasma nitrided at different atmosphere proportion and nitriding time.

The hardness and the corrosion resistance of the untreated and various plasma treated samples were characterised by a variety of analytical techniques. The results show that plasma nutriding at low temperature can improve hardness of duplex stainless steel and its corrosion properties.

EN40B nitriding steel stockholders and suppliers, delivering to the whole of the UK. EN40B is a chromium molybdenum steel specification usually supplied in the hardened and tempered ‘T’ condition, which offers high wear resistance together with good toughness and ductility.

EN40B in T condition has a tensile of N/mm².Effect of Rare Earth Addition in Plasma Nitriding on Microstructure of Chromium Electro-Plating Authors: Jie Wen Huang, Dang Sheng Xiong, Xin Min Fan Abstract: As an active metal, chromium is easy to form oxides film on the surface, which acts as an obstacle to the nitrogen diffusion in plasma nitriding.Mössbauer and Atomic Force Microscopy Observations of Modified Surfaces of Fe-Si Steel Cleugh, D., Blawert, C., Steinbach, J., Ferkel, H., Mordike, B.L., and Bell, T.

() Effects of rare earth additions on nitriding of EN40B by plasma Schneeweiss O., Blawert C., Schaaf P. () Mössbauer and Atomic Force Microscopy Observations of.