Characteristics of a modified H13 hot-work tool steel fabricated by means of laser beam powder bed fusion

Yuan, Miwen; Cao, Yu; Karamchedu, Seshendra; Hosseini, Seyed; Yao, Yiming; Berglund, Johan; Liu, Libin; Nyborg, Lars

doi:10.1016/j.msea.2021.142322

Cited by 18 publications

(12 citation statements)

References 36 publications

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“…Fig. 10b shows a comparison of tensile strength of H13 steel manufactured by different techniques, including conventional casting methods [18,41,42], SLM [ [1,2,23,28,43]] and SLM þ heat treatment [28,34,41]in both other literatures and this study. Obviously, the ST-600 and ST-700 samples showed a good balance between strength and ductility.…”

Section: Mechanical Propertiesmentioning

confidence: 71%

“…Generally, a large residue stress was accumulated inside the as-SLMed alloy due to rapid solidification process with high cooling rates, which may distort the crystal lattice of the as-SLMed alloy [32,33]. The tempering decomposes the supersaturated martensite into ferrite and carbide, which may further distort the lattice [34]. Moreover, carbides tend to precipitate from the supersaturated matrix during tempering, which induces a decrease in the lattice spacing of matrix.…”

Section: Microstructural Characterizationmentioning

confidence: 99%

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Ultrastrong and ductile synergy of additively manufactured H13 steel by tuning cellular structure and nano-carbides through tempering treatment

Wen

Yang

et al. 2023

Journal of Materials Research and Technology

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Section: Mechanical Propertiesmentioning

confidence: 71%

Section: Microstructural Characterizationmentioning

confidence: 99%

Ultrastrong and ductile synergy of additively manufactured H13 steel by tuning cellular structure and nano-carbides through tempering treatment

Wen

Yang

et al. 2023

Journal of Materials Research and Technology

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“…[ 20–22 ] However, it is not a universal phenomenon because there are also cases of high YS and low strain‐hardening rate in the as‐printed state. [ 23–25 ] At all indentation depths, AMH consistently exhibited higher hardness than CMH (Figure 2c). It is worth highlighting that both AMH and CMH displayed an increase in hardness as indentation depth decreased, which was more significant in AMH.…”

Section: Resultsmentioning

confidence: 99%

Influence of Cell Structure on Yield Strength and Strain‐Hardening Behavior in Additively Manufactured H13 Hot Work Tool Steel

Kim,

Cho,

Kim

2024

steel research int.

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Mechanical properties including yield strength, hardness, and strain hardening are superior in additively manufactured H13 hot work tool steel (AMH) compared to conventional H13 (CMH), which are correlated with microstructural characteristics. Comprehensive microstructural analysis reveals that the strain is highly localized in the cell structure with retained austenite in AMH. Quenching and tempering (QT) heat treatment removes the cell structure and retains austenite from AMH, resulting in a microstructure and mechanical properties similar to CMH after QT. The constitutive equation for yield strength shows that retained austenite with sufficient amount of dislocation density in martensite contributes to higher yield strength in AMH than CMH and identical strengthening mechanism between AMH and CMH after QT. Furthermore, microstructural changes during plastic deformation are investigated to find the origin of high strain‐hardening rate in AMH. The relationship between hardness and indentation depth yields the higher statistically stored dislocation density in AMH than CMH. In addition to higher dislocation accumulation, transformation of retained austenite to α′ martensite results in transformation‐induced plasticity effect, which contributes to strain hardening.

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“…Due to its convenient design of alloying elements, H13 steel is well-established in various parts of the world for use as a hot-work steel that offers high hot strength, plasticity, toughness, and oxidation resistance [1,2]. Nevertheless, the inadequate wear and corrosion resistance of conventional H13 steel reduces the service life of tools after hot working.…”

Section: Introductionmentioning

confidence: 99%

Effects of WC on the Microstructure, Wear and Corrosion Resistance of Laser-Deposited CoCrFeNi High Entropy Alloy Coatings

Chen

Lin

et al. 2022

Coatings

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Wear and corrosion resistant properties of high entropy alloy coatings (HEAC) on H13 steel are of particular interest for industrial applications. The CoCrFeNi HEA/WC composite coatings (HEACC) developed in this study were successfully prepared by incorporating 10–40 wt.% WC into a matrix of CoCrFeNi HEA using laser cladding on an H13 steel substrate. Phase transformation, microstructure evolution, microhardness, wear and corrosion resistance of CoCrFeNi HEACC were investigated. According to the results, all CoCrFeNi HEACC exhibited higher wear and corrosion resistance than the H13 steel substrate. Wear resistance of CoCrFeNi HEACC first increases and then decreases with an increase in the concentration of WC particles, and the lowest coefficient of friction and the shallowest depth of wear groove were observed after adding 30 wt.%. Grain refinement strengthening and second-phase particle strengthening may contribute to enhanced hardness and wear resistance of coatings with WC additions. In addition, all the CoCrFeNi HEACC exhibited improved corrosion resistance. In particular, an addition of 10 wt.% WC helped to significantly improve the corrosion resistance and ease of passivation of CoCrFeNi HEACC.

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Characteristics of a modified H13 hot-work tool steel fabricated by means of laser beam powder bed fusion

Cited by 18 publications

References 36 publications

Ultrastrong and ductile synergy of additively manufactured H13 steel by tuning cellular structure and nano-carbides through tempering treatment

Ultrastrong and ductile synergy of additively manufactured H13 steel by tuning cellular structure and nano-carbides through tempering treatment

Influence of Cell Structure on Yield Strength and Strain‐Hardening Behavior in Additively Manufactured H13 Hot Work Tool Steel

Effects of WC on the Microstructure, Wear and Corrosion Resistance of Laser-Deposited CoCrFeNi High Entropy Alloy Coatings

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