Adhesion and wear properties of boro-tempered ductile iron

Kayalı, Yusuf; Yalçin, Yılmaz; Taktak, Sukru

doi:10.1016/j.matdes.2011.04.014

Cited by 27 publications

(8 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 9 shows in detail the presence of two wear particles in a quenched and tempered; b 'Mixture' boriding; c Ekabor boriding; d Ekabor boridingzQ&T 8 SEM images of wear tracks 9 Detail of wear particles on wear track: 'Ekabor boridingzQ&T' condition plate form, possibly from the spalling of the layer in the wear track, which can give rise to abrasive wear, since these wear debris can change the wear mode from adhesive to abrasive. 31,32,35 Conclusions When the above results are considered, the following conclusions can be drawn: N The boride layer has a high hardness, reaching 1770 HV(50 g) for Ekabor boriding samples and 1230 HV(50 g) for 'Mixture' boriding. The improvement in hardness is attributed to the formation of borides on the steel surface.…”

Section: Tribological Behaviourmentioning

confidence: 85%

Tribological behaviour of borided H13 steel with different boriding agents

Krelling

Milan

Costa

2015

Surface Engineering

View full text Add to dashboard Cite

Solid boriding thermochemical treatment was carried out on AISI H13 steel. Two boriding agents were used: Ekabor 1-V2 commercial powder and a mixture of 73?26 wt-% borax, 24?06 wt-%SiC, 1?22 wt-%NH 4 Cl and 1?46 wt-%NaCl. Pin on disc wear tests were carried out to investigate tribological behaviour. After the wear tests, samples were cut in cross-section to evaluate the thickness and morphology of the boride layer by scanning electron microscopy (SEM) and Vickers microhardness. Wear mechanisms were evaluated by SEM. A large improvement in wear resistance was observed for borided samples compared with samples that had been quenched and tempered. The thickness of the borided layer was higher for samples borided with Ekabor powder than those borided with the mixture. In comparison with quenched and tempered samples, borided samples had a higher incidence of cracks, which favours spalling and reduction of grooves formed by abrasive wear.

show abstract

Section: Tribological Behaviourmentioning

confidence: 85%

Tribological behaviour of borided H13 steel with different boriding agents

Krelling

Milan

Costa

2015

Surface Engineering

View full text Add to dashboard Cite

show abstract

“…According to this norm, there are four indentations maps, namely HF1 to HF4, which indicates great adhesion between layer and substrate. The indentations maps HF5 and HF6, which are characterized by occurrence of delamination or flakes in the failure area, are not acceptable results, indicating poor adherence [21][22][23].…”

Section: Methodsmentioning

confidence: 97%

Improvement of the Tribological Characteristics of AISI 8620, 8640 and 52100 Steels through Thermo-Reactive Treatments

et al. 2019

View full text Add to dashboard Cite

The production of vanadium and niobium carbides (VC and NbC) layers on AISI 8620, 8640, and 52100 steels may increase hardness and wear resistance of substrates. Thermochemical treatments were performed at 1000 °C for 2 and 4 h. The characterization of the treated samples was carried out by means of Knoop microhardness tests, “calotest” type microadhesive wear test, layer adhesion test according to VDI 3198 standard, and X-ray diffraction. Compact and uniform layers of VC and NbC were obtained in all treatments, with hardness up to 2500 HK and microadhesive wear resistance far superior to that of the substrates, indicating the great efficiency of these treatments for tribological applications.

show abstract

“…Ductile iron with fully ferritic matrix provides the highest amount of ductility & impact strength compared to any other matrix, whereas austempering treatment enhances strength & hardness along with fair amount of elasticity [1,2]. Hardening & tempering treatment is applied to decrease the hardness & provide ductility coupled with significantly high strength, the latter being attained by tempering at temperatures ranging from 300°C to 450°C, depending on the chemical composition & the nodule count [3].…”

Section: Introductionmentioning

confidence: 99%

Suitability of SG Iron to Be Used As Nuclear Fuel Transport Cask

Behera¹,

Mishra²,

Sen³

et al. 2016

3rd Annual International Conference on Materials Science, Metal and Manufacturing ( M3 2016 )

View full text Add to dashboard Cite

Morphological aspects such as volume fraction of various phases, nodularity, and nodule count are responsible for mechanical properties of Spheroidal graphite cast iron (SG Iron)/ Ductile iron (DI). In present work, DI specimens were subjected to different heat treatment processes to correlate the mechanical properties with microconstituents, to be used for spent nuclear fuel cask fabrication. The investigation revealed higher strength for tempered martensitic specimens with a considerable amount of ductility. Increased Si & Cr content resulted increasing in ferrite volume fraction consequently leading to increased ductility and impact toughness, whereas increased pearlite volume fraction resulted in increased hardness.

show abstract

Adhesion and wear properties of boro-tempered ductile iron

Cited by 27 publications

References 24 publications

Tribological behaviour of borided H13 steel with different boriding agents

Tribological behaviour of borided H13 steel with different boriding agents

Improvement of the Tribological Characteristics of AISI 8620, 8640 and 52100 Steels through Thermo-Reactive Treatments

Suitability of SG Iron to Be Used As Nuclear Fuel Transport Cask

Contact Info

Product

Resources

About