Comparison of Hardness and Wear Behaviour οf Boronized and Carburized AISI 8620 Steels

Çalık, Adnan; Düzgün, Akın; Ekinci, Ali Ercan; Karakas, S.; Uçar, N.

doi:10.12693/aphyspola.116.1029

Cited by 20 publications

(11 citation statements)

References 15 publications

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“…It has a column-shaped crystal structure positioned in the direction of diffusion in both layers [20]. Boriding process has been shown to have outstanding tribological properties compared to carburized and nitrided steel as a surface hardening method in the industry [21][22][23][24][25][26]. Boronized iron and steel surfaces are of high hardness, excellent wear, good corrosion, and strong chemical stability [27,28].…”

Section: Introductionmentioning

confidence: 99%

Effect of pack-boriding on the tribological behavior of Hardox 450 and HiTuf Steels

Aktaş

Toprak

Çalık

et al. 2020

Reviews on Advanced Materials Science

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In this study, Hardox 450 and HiTuf steels were boronized by pack-boriding method at 800, 900, and 1000∘C for 5 h. The phases, microstructure, hardness, and wear behavior of boride layers formed on the surface of samples were investigated using XRD, SEM, Micro-Vickers hardness testers, and a pin-on-disc tribotester, respectively. XRD analysis showed that both FeB and Fe2B phases were formed in the borided area of Hardox 450 steel, but only Fe2B phase occurred in the boride layer of the HiTuf steel. Micro-Vickers hardness results indicated that the hardness values of the boride layer decreased from the column-shaped structure to towards the matrix in both of Hardox 450 and HiTuf steels. Furthermore, the wear test results showed the coefficients of friction (COF) decreased significantly in the borided samples. The COF of the unborided Hardox 450 steel was reduced considerably from 0.29 to 0.02 by boriding treatment. Similarly, the COF of unborided HiTuf steel was significantly diminished from 0.16 to 0.04 by boriding treatment. In conclusion, the results of this study have indicated that the wear resistance of Hardox 450 and HiTuf steels can be improved by pack-boriding.

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Section: Introductionmentioning

confidence: 99%

Effect of pack-boriding on the tribological behavior of Hardox 450 and HiTuf Steels

Aktaş

Toprak

Çalık

et al. 2020

Reviews on Advanced Materials Science

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“…Numerous information on FeB and Fe 2 B borides can be obtained from boronizing processes research, where these borides have been of primary interest. Available studies on mechanical and tribological properties of boride layers vouch for their advantages over other surface hardening treatments [ 13 , 14 , 15 , 16 ]. Reported microhardness values for boride layers are mainly in the range between 1600 and 2200 HV 0.05 [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Third Element on Nano-Mechanical Properties of Iron Borides FeB and Fe2B Formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) Alloys

et al. 2020

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In this study, the influence of alloying elements on the mechanical properties of iron borides FeB and Fe2B formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) alloys were evaluated using instrumented indentation measurement. The microstructural characterization of the alloys was performed by means of X-ray diffraction and scanning electron microscope equipped with an energy dispersive X-ray analyzer. The fraction of the phases present in the alloys was determined either by the lever rule or by image analysis. The hardest and stiffest FeB formed in Fe-B-X (X = C, Cr, Mn) alloys was observed in the Fe-B-Cr alloys, where indentation hardness of HIT = 26.9 ± 1.4 GPa and indentation modulus of EIT = 486 ± 22 GPa were determined. The highest hardness of Fe2B was determined in the presence of tungsten as an alloying element, HIT = 20.8 ± 0.9 GPa. The lowest indentation hardness is measured in manganese alloyed FeB and Fe2B. In both FeB and Fe2B, an indentation size effect was observed, showing a decrease of hardness with increasing indentation depth.

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“…However, for more versatile applications, its mechanical properties or responses such as hardness, toughness and tensile strength can be improved by heat treatment [2]. Packcarburization has been used to induce high carbon value up to 2 mm case depth on the surfaces of low carbon steel [3], while the core remains with low carbon value [4]. Maize-stover ash potash (MSAP), is a double chlorides salts of K, Na and Ca, as an alkaline salt derived from maize-stover ash by thermal processing of the filtrate [5,6].…”

Section: Introductionmentioning

confidence: 99%

Process optimization of the mechanical properties of AISI 1020 steel quenched using maize-stover ash potash solution

Ogunwede¹,

Abolarin²,

Abdulrahman³

et al. 2020

Nig. J. Tech.

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The process parameter optimization of maize-stover ash potash (MSAP) as a quenching medium for heat treatment of AISI-1020 steel was conducted in this study to improve the mechanical properties of steel after carburization and quenching. The optimization process utilized Taguchi L9(32) orthogonal array method to determine the individual Signal to Noise (S/N) ratio and Analysis of Variance (ANOVA). A multi-response weighted analysis technique was applied to derive combined quality responses of the heat treated test pieces. The result shows that the optimal factor level of MSAP solution strength was achieved at AM1BM1, which offered 57.6 HRC hardness, 39 J toughness and 1971 N/mm2 tensile strength as improved mechanical properties for the heat treated steel. Keywords: Optimization, MSAP, quenching, Taguchi, ANOVA

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Comparison of Hardness and Wear Behaviour οf Boronized and Carburized AISI 8620 Steels

Cited by 20 publications

References 15 publications

Effect of pack-boriding on the tribological behavior of Hardox 450 and HiTuf Steels

Effect of pack-boriding on the tribological behavior of Hardox 450 and HiTuf Steels

The Influence of the Third Element on Nano-Mechanical Properties of Iron Borides FeB and Fe2B Formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) Alloys

Process optimization of the mechanical properties of AISI 1020 steel quenched using maize-stover ash potash solution

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