Wear and corrosion behavior of laser surface engineered AISI H13 hot working tool steel

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

doi:10.1016/j.surfcoat.2014.11.058

Cited by 156 publications

(58 citation statements)

References 27 publications

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“…The microstructure of the original QT base material (Fig. 3f) is formed of tempered martensite with homogeneously distributed fine carbides which agrees well with findings of other studies on hot work tool steels [13][14][15].…”

Section: Microstructural Analysessupporting

confidence: 88%

“…This maximum roughness may be caused due to the overlapping and/or due to the ball to pull off surface material chips which are consequently pushed by the ball along the wear track. Figure 7 depicts the comparison of specific wear rate related to the individual materials states (AR, QT, LSH) showing the minimal value for LSH condition as also presented in [15]. This behavior of the laser-hardened surface can likely be related to the refinement of martensitic microstructure which also correlates well with the decrease of the friction coefficient [20].…”

Section: Microhardness Measurementsmentioning

confidence: 99%

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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: 88%

Section: Microhardness Measurementsmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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“…Actually, the cracks as a network are normally observed on the die surface, which results in more than 80% failure of hot-work dies [2]. To date, researchers found that the uniform hardness, impact toughness, tensile strength and high temperature fatigue strength will be beneficial to prolong the service life when the die steel is subjected to intense friction and mechanical shock in service [3][4][5][6][7][8][9]. In addition, N. Mebarki [10], S. Kheirandish [11] and X. Hu [12] found that the coarse eutectic carbides in the process of thermal fatigue could decrease the cyclic softening behavior and lead to fatigue failure.…”

Section: Introductionmentioning

confidence: 99%

Carbides Evolution and Tensile Property of 4Cr5MoSiV1 Die Steel with Rare Earth Addition

Liu

et al. 2017

Metals

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Studies of 4Cr5MoSiV1 die steel suggest that under appropriate conditions, additions of rare earth (RE) can enhance tensile property. This improvement is apparently due to the more uniform distribution of carbides and the enhancement of precipitation strengthening after RE additions. In this present work, the effect of the RE addition on the carbides evolution and tensile property of 4Cr5MoSiV1 steel with various RE contents (0, 0.018, 0.048 and 0.15 wt %) were systematically investigated. The two-dimensional detection techniques such as optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) were used to investigate the carbides evolution of as-cast, annealed and tempered with RE addition. The results indicated that the carbides in 4Cr5MoSiV1 steels were modified by adding the suitable amount of RE. The eutectic structure and coarse eutectic carbides were all refining and the morphology of the annealed carbides initiated change from strip shape to ellipsoidal shape compared with the unmodified test steel (0RE). In addition, the amount of the tempered M 8 C 7 carbides increased initially and then decreased with the alteration of RE addition from 0.018 to 0.15 wt %. Notably, the tensile test indicated that the average value of ultimate tensile strength (UTS) and elongation rate of 0.048RE steel increased slightly to 1474 MPa and 15%, higher than the 1452 MPa and 12% for the unmodified test steel (0RE), respectively. Such an addition of RE (0.048 wt %) would have a significant effect on the carbides evolution of as-cast, annealed and tempered and resulting in the tensile property of 4Cr5MoSiV1 die steel.

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“…1 It was reported that the extrusion tools exhibit a complex strain-time pattern under a variety of cyclic loading conditions in high temperature and thus are prone to premature failure. Hence, it has been extensively used in the extrusion industry.…”

Section: Introductionmentioning

confidence: 99%

Fatigue and ratcheting assessment of AISI H11 at 500°C using constitutive theory coupled with damage rule

Luo

Wang

et al. 2017

Fatigue Fract Eng Mat Struct

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Hot extrusion is one of the most commonly used manufacturing methods for metal plastic deformation, and the consumption of extrusion tooling is considerably high due to its fatigue damage under cyclic serving condition. Hot‐work tool steel AISI H11 is one of these typical materials employed in extrusion tooling. This work is dedicated to calculating the stress/strain state of AISI H11 and predicting its lifetime at high temperature 500°C by building a unified constitutive model coupled with Lemaitre's damage law. Tensile tests and strain/stress reversed cycling tests have been conducted at 500°C to investigate mechanical properties and damage evolution. A unified constitutive model with Armstrong‐Fredrick/Ohno‐Wang kinematic hardening rule and a new proposed isotropic hardening rule is built; Lemaitre's damage law is employed as well. Parameters are determined based on tests and are temperature dependent. Finite element simulation of the deformation behaviour and fatigue lifetime is implemented into commercial software ABAQUS Standard v6.14‐2 with user material subroutine to validate the proposed method. The comparison shows good agreement with experimental results, and this part of work is essential and crucial to subsequent structure analysis.

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Wear and corrosion behavior of laser surface engineered AISI H13 hot working tool steel

Cited by 156 publications

References 27 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

Carbides Evolution and Tensile Property of 4Cr5MoSiV1 Die Steel with Rare Earth Addition

Fatigue and ratcheting assessment of AISI H11 at 500°C using constitutive theory coupled with damage rule

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