Production and characterization of boride layers on AISI D2 tool steel

Oliveira, C.K.N.; Casteletti, Luíz Carlos; Neto, Amadeu Lombardi; Totten, George E.; Heck, Stênio Cristaldo

doi:10.1016/j.vacuum.2009.10.038

Cited by 50 publications

(45 citation statements)

References 8 publications

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“…Also, according to Campos [5], chromium inhibits the layer growth. In the case of boronizing of high chromium steels, in addition, the FeB-layer tends to form more easily and, as indicated for instance by Dybkov et al [3], Li et al [6], and Oliveira et al [7], it can make up to 50 % of the total compound layer thickness.…”

Section: Introductionmentioning

confidence: 95%

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Nature of phases in boronized H11 hot work tool steel

Jurči¹,

Hudáková²,

Kusý³

2012

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The H11 hot work tool steel was short-time boronized, austenitized, quenched and tempered to a standard core hardness of 47-48 HRC. Microstructure, phase constitution and microhardness of boronized layers were investigated. It was found that the boronizing begins with the formation of α-solid solution, enriched with boron, and continues with the development of firstly the Fe2B-boride compound and finally with the FeB-phase. During the boronizing, carbon atoms are transported from the surface towards the parent material. They are accumulated in a narrow intermediate region beneath the borides, where they develop new carbides. These carbides were identified as M23C6. Their portion probably increases with prolonged boronizing time, which is reflected in higher hardness of intermediate region. Also the hardness of boron compounds was found to be increased slightly with longer processing time.K e y w o r d s : powder boronizing, H11 hot work tool steel, microstructure, phase constitution, borides, carbides

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Section: Introductionmentioning

confidence: 95%

“…For alloyed steels, Carbucichio and Palumbarini [11] established that the substitutional atoms like Mo, Cr and V concentrated at the tips of boride columns and reduced the boron flux in this region. As a result, the interface obtained an irregular form [7].…”

Section: Introductionmentioning

confidence: 99%

Nature of phases in boronized H11 hot work tool steel

Jurči¹,

Hudáková²,

Kusý³

2012

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“…Hullapa et al (2013) explored the use of Magnetic Barkhausen Noise (MBN) to monitor the transformation of austenite to martensite during cooling to sub-zero temperatures. Oliveira et al (2010) exhibited production and characterization of boride layers on AISI D2 tool steel by thermochemical boriding treatments performed in borax bath. Experimental investigations for machinability during hard turning of AISI D2 cold work tool steel with conventional and wiper ceramic inserts was conducted by Gaitonde et al (2009).…”

Section: Literature Reviewmentioning

confidence: 99%

Process parameter optimization based on principal components analysis during machining of hardened steel

Chandgude¹,

Pawar²,

Sadaiah³

2015

10.5267/j.ijiec

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The optimum selection of process parameters has played an important role for improving the surface finish, minimizing tool wear, increasing material removal rate and reducing machining time of any machining process. In this paper, optimum parameters while machining AISI D2 hardened steel using solid carbide TiAlN coated end mill has been investigated. For optimization of process parameters along with multiple quality characteristics, principal components analysis method has been adopted in this work. The confirmation experiments have revealed that to improve performance of cutting; principal components analysis method would be a useful tool.

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“…The use of appropriate hard coatings on this steel can further improve its wear resistance. Surface treatments such as chemical vapour deposition (CVD), phsyical vapor deposition (PVD) techniques provide to improve tribological performance [1][2][3][4]. CVD usually involves high processing temperatures in order to deposition of the coating materials.…”

Section: Introductionmentioning

confidence: 99%

Niobium boride layers deposition on the surface AISI D2 steel by a duplex treatment

Kon¹,

Pazarlıoğlu²,

Şen³

et al. 2015

AIP Conference Proceedings

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Abstract. In this paper, we investigated the possibility of deposition of niobium boride layers on the surface of AISI D2 steel by a duplex treatment. At the first step of duplex treatment, boronizing was performed on AISI D2 steel samples at 1000 o C for 2h and then pre-boronized samples niobized at 850°C, 900°C and 950 o C using thermo-reactive deposition method for 1-4 h. The presence of the niobium boride layers such as NbB, NbB 2 and Nb 3 B 4 and also iron boride phases such as FeB, Fe 2 B were examined by X-ray diffraction analysis. Scanning electron microscope (SEM) and micro-hardness measurements were realized. Experimental studies showed that the depth of the coating layers increased with increasing temperature and times and also ranged from 0.42 μm to 2.43 μm, depending on treatment time and temperature. The hardness of the niobium boride layer was 2620±180 HV 0.005 .

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Production and characterization of boride layers on AISI D2 tool steel

Cited by 50 publications

References 8 publications

Nature of phases in boronized H11 hot work tool steel

Nature of phases in boronized H11 hot work tool steel

Process parameter optimization based on principal components analysis during machining of hardened steel

Niobium boride layers deposition on the surface AISI D2 steel by a duplex treatment

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