Laser coatings to improve wear resistance of mould steel

Navas, C.; Conde, A.; Fernández, B.; Zubiri, F.; Damborenea, J. de

doi:10.1016/j.surfcoat.2004.05.002

Cited by 126 publications

(53 citation statements)

References 15 publications

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“…The motivation for selecting AISI 431 as the coating materials was its optimal combination of corrosion and wear resistance. In addition, this alloy has been previously studied as a candidate material for repair applications by laser cladding [14].…”

Section: Introductionmentioning

confidence: 99%

The effect of cladding speed on phase constitution and properties of AISI 431 stainless steel laser deposited coatings

Hemmati

Ocelík

Hosson

2011

Surface and Coatings Technology

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The effect of cladding speed on phase constitution and properties of AISI 431 stainless steel laser deposited coatings Hemmati, I.; Ocelik, V.; De Hosson, J. Th. M. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Shorter processing time has given impetus to laser cladding technology and therefore in this research the AISI 431 martensitic stainless steel coatings are laser deposited at high cladding speeds, i.e. up to 117 mm/s. The analysis of phase constitution and functional properties of the coatings are performed by optical microscopy, Scanning Electron Microscopy (SEM), and hardness and sliding wear tests. The outcome of this research shows that an extreme refinement of the solidification structure will influence the phase constitution of the coatings by lowering the M s temperature and hence stabilizing the austenite which results in lower hardness values and increased wear rates. These results confirm that the structural refinement obtained by higher cladding speeds is not helpful for improving the hardness and wear properties of laser deposited martensitic stainless steel coatings.

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Section: Introductionmentioning

confidence: 99%

The effect of cladding speed on phase constitution and properties of AISI 431 stainless steel laser deposited coatings

Hemmati

Ocelík

Hosson

2011

Surface and Coatings Technology

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“…High-speed steel (HSS) coating is a promising candidate for offering highly desired surface properties on a DI substrate considering that HSS contains a variety of primary alloy carbides rich in vanadium, chromium, tungsten and molybdenum, etc., which exhibits excellent comprehensive mechanical properties, highlighting its high resistance to wear, reliable toughness and hot hardness at elevated temperatures [4][5][6][7][8]. These superior mechanical properties are attributed to their microstructures consisting of fine, hard and stable carbides embedded in a strong and tough matrix.…”

Section: Introductionmentioning

confidence: 99%

Hard-yet-tough high-vanadium high-speed steel composite coating in-situ alloyed on ductile iron by atmospheric plasma arc

2017

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Hard-yet-tough high-vanadium high-speed steel composite coating in-situ alloyed on ductile iron by atmospheric plasma arc Cao, Huatang; Dong, Xuanpu; Pei, Yutao T. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. H. Cao, et al., Int. J. Comp. Meth. and Exp. Meas., Vol. 6, No. 3 (2018) ABSTRACT A graded high-vanadium alloy composite coating was synthesized from premixed powders (V, Cr, Ti, Mo, Nb) on ductile iron (DI) substrate via atmospheric plasma arc surface alloying process. The resulted cross-section microstructure is divided into three distinct zones: upper alloyed zone (AZ) rich with spherical primary carbides, middle melted zone (MZ) with fine white iron structure and lower heat affected zone (HAZ). Spherical or bulk-like primary carbides with diameter < 1 μm in the AZ are formed via in-situ reactions between alloy powders and graphite in DI. Microstructural characterizations indicate that the carbides are primarily MC-type (M=V, Ti, Nb) carbides combined with mixed hardphases such as M 2 C, M 7 C 3 , M 23 C 6 , and martensite. Disperse distribution of spherical, submicron-sized metal carbides in an austenite/ledeburite matrix render the graded coating hard-yet-tough. The maximum microhardness of the upper alloyed zone is 950 HV 0.2 , which is five times that of the substrate. Significant plastic deformation with no cracking in the micro-indentations points to a high toughness. The graded high-vanadium alloy composite coating exhibits superior tribological performance in comparison to Mn13 steel and plasma transferred arc remelted DI.

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“…During this process, high-performance coating material is cladded onto the mould surface, where the coating materials possess excellent properties: low dilution rate, homogenized and dense microstructure, good bond between the cladding layer and the substrate, and low heat affect [3][4][5] . This technique can repair mould parts to original dimensions, and improve the wear resistance, corrosion resistance, heat resistance, fatigue resistance of mould surfaces 6,7) . Thus, the service life of moulds can be prolonged and effectively enhanced the resource utilization and reduced the energy consumption during the manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

Characteration of Laser Cladded Fe-Mn-Cr Alloy Coatings Modified by Plasma Nitriding

et al. 2016

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With the use of the high-performance precision mould, the requirements on the high speed, high reliable mould parts become more and more stringent. In order to further improve the surface wear resistance of moulds, Fe-Mn-Cr alloy coatings was prepared by a duplex treatment consisting of laser cladding followed by plasma nitriding. A dense structure coating with no cracks, pores or other defects were obtained after the duplex treatment, presenting a good metallurgical bonding to the substrate. After the duplex treatment, a nitride-layer of ξ-Fe 2 N+Cr 2 N and α-Fe with nitrogen were formed on the coating surface. The in uence of the duplex treatment on the hardness and wear resistance of the cladding layer were investigated. The hardness of the coating signi cantly increased, with an average microhardness of 1788 HV, which ensured the wear resistance of the coating. Comparing with laser cladded coating, the samples with duplex treated coating dropped about 41% in wear rate, and performed a better wear resistance. The main wear mechanism of the samples with duplex treated coating was abrasive wear.

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Laser coatings to improve wear resistance of mould steel

Cited by 126 publications

References 15 publications

The effect of cladding speed on phase constitution and properties of AISI 431 stainless steel laser deposited coatings

The effect of cladding speed on phase constitution and properties of AISI 431 stainless steel laser deposited coatings

Hard-yet-tough high-vanadium high-speed steel composite coating in-situ alloyed on ductile iron by atmospheric plasma arc

Characteration of Laser Cladded Fe-Mn-Cr Alloy Coatings Modified by Plasma Nitriding

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