Effects of Combined Diffusion Treatments on the Wear Behaviour of Hardox 400 Steel

Mindivan, Harun

doi:10.1016/j.proeng.2013.12.243

Cited by 21 publications

(19 citation statements)

References 9 publications

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“…While there is much studies with the weldability of hardox steels (20)(21), there are very few studies on machinability. Some of these studies are related to waterjet (22,23) and laser plasma and plasma cutting (24)(25)(26)(27)(28). Considering the studies published on WEDM; processing parameters and designated change of processing performance outputs such as kerf, Ra, MRR, and metallurgical structure change were analyzed by several studies.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Hardox 400 Steel Exposed to Heat Treatment Processes in WEDM

Altuğ¹

2018

Journal of Polytechnic

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In this study, microstructure, mechanical, and conductivity characteristics of Hardox 400 steel were changed with different heat treatments and effect of such characteristics on its machinability with Wire Electrical Discharge Machining (WEDM). Optical microscope examinations were performed to determine various characteristics, and additionally microhardness and conductivity measurements were conducted hereof. L18 Taquchi test design was conducted with three levels and four different parameters to determine the effect of such alterations on its machinability with WEDM and post-processing Cutting width (kerf), Surface roughness (Ra), Material removal rate (MRR) values were determined. Micro changes were ensured successfully by using applied heat treatments. The best kerf value was obtained from sample 6 which was tempered from 350 °C. The microstructure of this sample was composed of commonly α ferrite and few pearlites. The best Ra value was obtained from sample 3 which was tempered from 200 °C. The microstructure of this sample was composed of few α ferrite and commonly pearlites. The best MRR value was obtained from sample 5 which was tempered from 300 °C. The microstructure of this sample was composed of almost equally α ferrite and pearlites. Additionally the most effective parameters on Ra were determined as hardox and current. The most effective parameters on kerf and MRR were determined as time off and hardox.

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Section: Introductionmentioning

confidence: 99%

Investigation of Hardox 400 Steel Exposed to Heat Treatment Processes in WEDM

Altuğ¹

2018

Journal of Polytechnic

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“…To the best of the author's knowledge, very little work has envisaged the combination between these complex surface treatments on steels namely boronitriding [17,18], borocarburising [14][15][16][17][18][19] and borocarbonitriding [20]. In addition, there is a lack of research available that has dealt with combining between surface treatments of nitriding, nitrocarburising and boriding of steels [21,22]. Therefore, the present research has been conducted with the main objective being the enhancement of the surface properties of AISI 4130 alloy steel.…”

Section: Introductionmentioning

confidence: 99%

Boriding and boronitrocarburising effects on hardness,wear and corrosion behavior of AISI 4130 steel

et al. 2019

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The effects of boriding and boronitrocarburising surface treatments on the microstructure and mechanical properties of AISI 4130 steel have been investigated. Pack boriding was carried out at 1223 K for 5 h and 8 h, while the double treatment of boronitrocarburising consisted of salt bath nitrocarburising at 853 K for 6 h followed by pack boriding at the same temperature and times as the boriding treatment. Microstructure examination of the borided and boronitrocarburised layers was carried out using optical and scanning electron microscopy, and phase identification was obtained using X-ray diffraction. Vickers hardness, wear and corrosion weight loss tests were used to evaluate the mechanical properties and corrosion behaviour. The results of X-ray diffraction analysis revealed the presence of superhard phases such as FeB, Fe 2 B, CrB, MnB and MnB 2 , indicating that pack boriding surface treatment conducted at 1223 K for 8 h exhibited the highest hardness, low coefficient of friction and the greatest wear resistance. Boronitrocarburising treatment, on the other hand, caused a reduction in both the depth of iron borides zone and mechanical properties compared to the boriding surface treatment. These recommended treatments offer to industrialists a particular contribution and interest in the development of these steels, which can be applied in various fields.

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“…Processes limitations and optimizations can be reached by the combination of different thermochemical treatments that can be performed progressively or simultaneously. These treatments are known as Carbonitriding 7,[19][20][21][22] , Nitrocarburizing 10,[23][24][25][26] , Borocarburizing 27,28 or Boronitriding [29][30][31][32][33][34] . A transition zone is formed between the superficial hard layer and the soft substrate -a diffusion zone, were atoms interstitially dissolved in matrix improve fatigue resistance.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Different Surface Layers Produced by Solid Boron-Nitro-Carburizing Thermochemical Treatment on AISI 1020

et al. 2019

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The aim of this study is to obtain and characterize surface layers on low carbon steel with the pack boronnitro-carburizing process. Different mixtures of commercial powders (Turbonit ® and Ekabor ®) were used to investigate the case properties, microstructure and phases formation on AISI 1020 steel. A series of experiments were conducted in solid medium with powders blend, with weight proportions of 0/100;25/75;50/50;75/25;100/0 at temperatures of 1000 and 1100º C for 2 and 10 hours. Roughness measurement of all treated specimens was assessed to compare with pre-treatment condition. Hardness profile and comparative analysis of phase structure, morphology and composition was carried out to treatment conditions. Optical microscopy shows differences on layers surface, depth and microstructure case-diffusion zone. Results found indicated that for the same treatment time and temperature, hardness was changed, but the diffusion case depth was kept similar. DRX and XPS indicated the formation of boron nitride after certain treatments.

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Effects of Combined Diffusion Treatments on the Wear Behaviour of Hardox 400 Steel

Cited by 21 publications

References 9 publications

Investigation of Hardox 400 Steel Exposed to Heat Treatment Processes in WEDM

Investigation of Hardox 400 Steel Exposed to Heat Treatment Processes in WEDM

Boriding and boronitrocarburising effects on hardness,wear and corrosion behavior of AISI 4130 steel

Characterization of Different Surface Layers Produced by Solid Boron-Nitro-Carburizing Thermochemical Treatment on AISI 1020

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