Influence of Tertiary Carbides on Improving Fatigue Limit of H13 Die Steels

Shinde, Tarang; Dhokey, N. B.

doi:10.1007/s13632-017-0380-7

Cited by 20 publications

(11 citation statements)

References 15 publications

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“…The potentially better fatigue limit of the B-type steel would be in good agreement with the microstructural analysis carried out in this work, as the A-type steel showed a higher abundance of coarser carbides than the B-type steel. Finer carbides should hinder crack propagation, whereas coarser carbides and inclusions help promote crack initiation and are detrimental to fatigue behaviour [ 17 ].…”

Section: Resultsmentioning

confidence: 99%

“…The SEM images also revealed a more gradual transition of the crack propagation through non-coplanar grains in the B-type steel ( Figure 15 a) as compared to the A-type steel ( Figure 14 a). Intermetallic carbides could have acted as obstacles for crack propagation [ 17 ], deviating the main crack to different non-coplanar grains during crack growth. Therefore, the presence of coarser carbides in the A-type steel specimens would explain why the fracture surfaces of these specimens were rougher than those of the B-type steel.…”

Section: Resultsmentioning

confidence: 99%

“…However, the results of the high-cycle fatigue (HCF) characterisation of hot forging tool steels remain scarce in the literature. Shinde et al [ 17 ] performed rotating bending HCF tests on conventionally heat-treated H13 steel. As a result of these tests, a fatigue strength of 566 MPa was obtained at 10 7 cycles.…”

Section: Introductionmentioning

confidence: 99%

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An Experimental Analysis of the High-Cycle Fatigue Fracture of H13 Hot Forging Tool Steels

et al. 2022

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In this study, the axial fatigue behaviour of hot forging tool steels at room temperature was investigated. Fatigue tests were performed on two steels within the same H13 specification. The fatigue tests were carried out in the high-cycle fatigue domain under normal conditions. These tests were also performed on specimens in contact with a corrosive medium, applying stress values that led to the high-cycle fatigue domain under normal conditions for the sake of comparison. Both materials showed similar fatigue strengths when they were tested under normal conditions. In contrast, corrosion fatigue lives were much lower than in normal tests and differed significantly between the two steels. Crack initiation was triggered by microstructural and surface defects in the normal tests, whereas the formation of corrosion pits caused crack initiation in the corrosion fatigue tests. Moreover, a fracture surface analysis revealed dissimilar crack propagation areas between both steels, which suggested that both steels had different fracture toughness. These results were in line with the differences observed between the carbide and grain sizes of both of the material microstructures.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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An Experimental Analysis of the High-Cycle Fatigue Fracture of H13 Hot Forging Tool Steels

et al. 2022

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“…The fine carbides precipitated after cryogenic treatment assist with the improvement of these properties substantially. The cryogenic treatment even had an impact on fatigue life, as reported by some researchers [24,25]. The fine carbides could act as microcrack arresters.…”

Section: Introductionmentioning

confidence: 86%

Effect of Deep Cryogenic Treatment on Corrosion Behavior of AISI H13 Die Steel

Shinde¹,

Pruncu

Dhokey³

et al. 2021

Materials

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AISI H13 die steel specimens were subjected to heating at 1020 °C followed by oil quenching and double tempering at 520 °C. Subsequently, these specimens were subjected to deep cryogenic treatment at −185 °C in liquid nitrogen environment for 16 h and then subjected to soft tempering at 100 °C once the specimens attained room temperature. Thereafter, the specimens were subjected to scanning electron microscopy (SEM) analysis and electron backscatter diffraction (EBSD) analysis. The electrochemical corrosion activity was investigated in 3.5% NaCl at 23 ± 0.5 °C by evaluating the evolution of open circuit potential over time and potentiodynamic curves, and electrochemical impedance spectroscopy study was also carried out. The heat-treated specimens exhibited better resistance to corrosion through more electropositive values of open circuit potential. This could be attributed to lower grain boundary area in heat-treated specimens as compared to 16 h cryogenically treated specimen as higher grain boundary areas behave as an anode in an electrochemical cell, thereby enhancing the rate of corrosion. According to electrochemical tests, the cryogenically treated surface is more resistant to corrosion, followed by heated alloy. However, both surface modification treatments improved the corrosion behavior of the untreated alloy.

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“…Das et al 32 and Korade et al 33 reported near about 5 % improvement in the hardness of cryotreated AISI D2 tool steel. In the study of the influence of cryotreatment on H13 die steel, Shinde and Dhokey 34 observed that approximately 10 % improvement in hardness. The hardness of the conventionally treated specimens is less compared to the cryotreated specimens, which can cause the high wear rate.…”

Section: Hardnessmentioning

confidence: 99%

Influence of Cryogenic Treatment on the Tribological Behaviour of AISI H21 Tool Steel

Korade

Ramana

Jagtap³

2018

Mat. Res.

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The aim of the present work was to find out the optimum cryosoaking duration of deep cryogenic treatment to reduce the wear rate. The AISI H21 hot work tool steel specimens were hardened at 1195 ºC, cryotreated at-185 ºC for 6 to 30 h, double tempered at 540 ºC and soft tempered at 100 ºC. The hardness, impact toughness, wear rate and microstructural characteristics of the cryotreated specimens were studied. Wear test parameters were optimized by using Taguchi technique. Analysis of variance and signal to noise ratio were carried out in order to find significant parameters affecting the dependent parameter. The results show that load is the most influencing parameter followed by sliding velocity and cryosoaking duration. The linear mathematical model has been developed for wear rate using a regression analysis technique which will be useful for predicting results for new experiments.

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Influence of Tertiary Carbides on Improving Fatigue Limit of H13 Die Steels

Cited by 20 publications

References 15 publications

An Experimental Analysis of the High-Cycle Fatigue Fracture of H13 Hot Forging Tool Steels

An Experimental Analysis of the High-Cycle Fatigue Fracture of H13 Hot Forging Tool Steels

Effect of Deep Cryogenic Treatment on Corrosion Behavior of AISI H13 Die Steel

Influence of Cryogenic Treatment on the Tribological Behaviour of AISI H21 Tool Steel

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