Structure–property correlation in laser surface treated AISI H13 tool steel for improved mechanical properties

Telasang, Gururaj; Majumdar, Jyotsna Dutta; Padmanabham, G.; Manna, I.

doi:10.1016/j.msea.2014.01.083

Cited by 129 publications

(53 citation statements)

References 13 publications

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“…Occasionally, some original undissolved fine carbides are also present in this zone. This observation agrees well with findings of other authors [10][11][12] revealed in similar AISI H13 tool steel. The subsolidus microstructure just beneath the re-melted zone i.e.…”

Section: Microstructural Analysessupporting

confidence: 94%

The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel

Šebek¹,

Falat²,

Kováč³

et al. 2017

Archives of Metallurgy and Materials

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The present study deals with the effects of laser surface treatment on microstructure evolution and wear resistance of AISI H11 hot work tool steel in quenched and tempered condition. The most upper laser-affected zone is characterized by re-melted microstructure consisting of dendrite cells with fresh non-tempered martensite, retained austenite and inter-dendritic carbidic network. The subsolidus microstructure just beneath the re-melted zone represents the most laser surface hardened zone consisting of fresh non-tempered martensite with fine and coarse carbides as a result of overheating the original QT substrate microstructure. The highest microhardness values in the range from 775 to 857 HV were measured for the LSH microstructure and the most softened microstructure exhibited the minimum hardness of 530 HV. The laser treated samples showed the improvement of their surface wear resistance by 35%.

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Section: Microstructural Analysessupporting

confidence: 94%

The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel

Šebek¹,

Falat²,

Kováč³

et al. 2017

Archives of Metallurgy and Materials

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show abstract

“…5). The observed microstructures are typical for laser-melted tool steels [1,2,[4][5][6][7][8][9][10]13,15,18,21]. Usually, laser-melted tool steels contain martensite, retained austenite and carbides [5].…”

Section: Laser Surface Meltingmentioning

confidence: 91%

“…Consequently, the mechanical properties of tool steels may be controlled. Optimizing process parameters of laser surface treatments to achieve better properties of various steels remains a relevant topic [12][13][14][15][16][17][18][19][20][21]. The most important laser processes are as follows: laser heat treatment, laser melting, laser cladding and laser alloying [22].…”

Section: Introductionmentioning

confidence: 99%

Influence of pre-heating on the surface modification of powder-metallurgy processed cold-work tool steel during laser surface melting

Šturm

Štefániková

Petrovič

2015

Applied Surface Science

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“…It is reported that the service life of H13 tool steel mould for aluminium casting is maximised up to 180 thousands cycles through 21 times in-service repairing the crack surfaces of the mould by welding [2]. Different surface modification techniques such as PVD, CVD, and laser surface modifications have been adopted to overcome the problem [3].…”

Section: Introductionmentioning

confidence: 99%

“…In another work, Telesang et al found the compressive residual stress induces on surface for surface hardening of H13 tool steel using CW diode laser. However, the stress turned into tensile residual stress when surface melting occurred [3]. It is noted that the surface properties and residual stress varied in magnitude and type for different laser modification techniques.…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical modelling of laser surface glazing for H13 tool steel

et al. 2018

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A two-dimensional thermomechanical finite element (FE) model of laser surface glazing (LSG) has been developed for H13 tool steel. The direct coupling technique of ANSYS 17.2 (APDL) has been utilised to solve the transient thermomechanical process. A H13 tool steel cylindrical cross-section has been modelled for laser power 200 W and 300 W at constant 0.2 mm beam width and 0.15 ms residence time. The model can predict temperature distribution, stress-strain increments in elastic and plastic region with time and space. The crack formation tendency also can be assumed by analysing the von Mises stress in the heat-concentrated zone. Isotropic and kinematic hardening models have been applied separately to predict the after-yield phenomena. At 200 W laser power, the peak surface temperature achieved is 1520 K which is below the melting point (1727 K) of H13 tool steel. For laser power 300 W, the peak surface temperature is 2523 K. Tensile residual stresses on surface have been found after cooling, which are in agreement with literature. Isotropic model shows higher residual stress that increases with laser power. Conversely, kinematic model gives lower residual stress which decreases with laser power. Therefore, both plasticity models could work in LSG for H13 tool steel.

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Structure–property correlation in laser surface treated AISI H13 tool steel for improved mechanical properties

Cited by 129 publications

References 13 publications

The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel

The Effects of Laser Surface Hardening on Microstructural Characteristics and Wear Resistance of AISI H11 Hot Work Tool Steel

Influence of pre-heating on the surface modification of powder-metallurgy processed cold-work tool steel during laser surface melting

Thermomechanical modelling of laser surface glazing for H13 tool steel

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