On the comparison of microstructural characteristics and mechanical properties of high-vanadium austenitic manganese steels with the Hadfield steel

Moghaddam, E.G.; Varahram, N.; Davami, P.

doi:10.1016/j.msea.2011.10.089

Cited by 47 publications

(14 citation statements)

References 18 publications

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“…A small amount of undissolved cementite (C) was also observed in the austenitic phase. Conventionally, heat treatments of Hadfield steel at a temperature of 1000 to 1100°C dissolve the (Fe, Mn) 3 C carbide in the austenite and the following quenching in water will hinder the formation of M 3 C carbides [22]. The microstructure observations (Fig.…”

Section: Effect Of Heat Treatments On the Wear Resistance Of Steel 615mentioning

confidence: 95%

Effect of Heat Treatments on the Microstructure and Wear Resistance of a Modified Hadfield Steel

Ayadi¹,

Hadji²

2019

Metallofiz. Noveishie Tekhnol.

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In this study, the effect of heat treatments on the microstructure and wear resistance of Hadfield steel with different Cr + Ni contents is investigated. Hadfield steel with 1.2% wt. C and 12% wt. Mn is melted in an electric arc furnace. Added elements (Cr and Ni) are crushed and added as ultra-fine powders of ferro-alloyed composition in a well heated ladle. Two series of heat treatments are applied: one at 1100°C and the other at 1050°C. The microstructure of these steels is analysed using optical microscopy, scanning electron microscopy and X-ray diffraction. The Rockwell C hardness and the Vickers microhardness are measured at ambient temperature. The wear behaviour of all samples in as-cast and heat treated states is studied using pinon-disk wear tests. The obtained results show that the microstructure of the as-cast Hadfield steel samples consists of an austenitic matrix and complex carbides precipitated at the grain boundaries. Increase in the Cr + Ni content refines the structure that improves the hardness and the wear resistance. In the heat-treated state, the microstructure reveals two distinct phases: martensite and retained austenite. The increase of heat treatment temperature favours the martensitic transformation, which positively affects the hardness and wear behaviour of studied steels.

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Section: Effect Of Heat Treatments On the Wear Resistance Of Steel 615mentioning

confidence: 95%

Effect of Heat Treatments on the Microstructure and Wear Resistance of a Modified Hadfield Steel

Ayadi¹,

Hadji²

2019

Metallofiz. Noveishie Tekhnol.

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“…Therefore, whether from load conditions or material properties, increasing the hardness can improve the initial wear resistance of high manganese steel, and most of the work is around improving the hardness or surface hardness currently. Therefore, in order to improve the initial wear resistance of high manganese steel, strengthening methods such as alloying, modification, precipitation strengthening, surface deformation strengthening and surface aging treatment were adopted to strengthen the austenite matrix and distribute dispersed, fine carbides on the austenite matrix [3][4][5][6][7][8][9][10][11][12][13][14][15][16]. However, in the overall material or the surface of the material, the higher the hardness is, the higher the wear resistance become.…”

Section: Introductionmentioning

confidence: 99%

Initial wear characteristics of aging‐treated ZG120Mn13 steel under steel shot at high‐velocity impact

Cui

Lui

Ding

et al. 2020

Materialwissenschaft Werkst

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The initial wear of high manganese steel parts in practical use is related to their original hardness, external loading, surface machining accuracy, and the change of shape and dimension. The paper studies the size and coverage percentage of impact scars on the ZG120Mn13 high carbon high manganese steel surface, as well as the variation of weight loss under high‐velocity steel shot by changing aging treatment process. Meanwhile, the relationship between the hardness of aging ZG120Mn13 steel and its initial wear characteristics is discussed. The results show that after 5 seconds, the size and coverage percentage decreased with the increment of hardness. However, in any different period, the wear mass losses of the steel increase with increment of hardness, and increase rapidly first, then slowly. Therefore, under high‐velocity impact loading, the increment of hardness is beneficial to improving initial wear‐resistance from the perspective of the deformation, but is conducive to improving the resistance from the mass loss. Consequently, we should not only emphasize the high hardness merely, but also consider the changing law of weight loss and initial deformation comprehensively, so that we can achieve the best initial wear resistance when the high manganese steel has the appropriate hardness.

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“…In order to improve the wear resistance and serviceable range of Hadfield steel, a series of modified Hadfield steels with alloying were developed based on the compositions of traditional Hadfield steel (Fe-12%Mn-1.2%C). [1][2][3][4][5] Chen [6] designed the N þ Cr alloyed Hadfield steel Mn12CrN with initial hardness: 250 HV (%238 HB), ultimate tensile strength 1000-1100 MPa and yield strength: 470-500 MPa. Wen [4] designed a novel high manganese (high-Mn) austenitic steel Fe18Mn5Si0.35C (wt%) with higher strain hardening capacity than Hadfield steel.…”

Section: Introductionmentioning

confidence: 99%

Compression Deformation Behavior of a Fe–26Mn–7Al–1.3C Austenitic Steel after Precipitation‐Hardened Treatment

Feng

Song

Liu

et al. 2019

steel research int.

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Room temperature compression deformation behavior of a Fe–26Mn–7Al–1.3C austenitic steel in association with deformation microstructures is investigated in the article. After isothermal annealing at 550 °C for 2 h, a substantial nano‐sized κ‐carbides are precipitated within the austenite matrix. The precipitation‐hardened steel obtains an excellent combination of yield strength and toughness (product over 97 000 MPa J cm−2) associated with multiple‐stage strain hardening. In order to clarify the chief deformation mechanism, deformation microstructures are analyzed at different strain levels by means of transmission electron microscopy (TEM). TEM results show that the deformation microstructures exhibit the typical planar glide characteristics due to “glide plane softening” effect in spite of the high SFE (≈72 mJ m−2) for current steel. Some specific planar dislocation configurations including Taylor lattices and micro‐bands are contributed to high constant strain hardening rate. However, at high strain, intersections of highly localized nature micro‐bands decrease the formation activity of slip bands, meanwhile, the interaction between κ‐carbides and dislocation cross‐slip becomes more intensive, which results in a decrease in the growth rate of dislocations due to the frequency of dislocation annihilation.

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On the comparison of microstructural characteristics and mechanical properties of high-vanadium austenitic manganese steels with the Hadfield steel

Cited by 47 publications

References 18 publications

Effect of Heat Treatments on the Microstructure and Wear Resistance of a Modified Hadfield Steel

Effect of Heat Treatments on the Microstructure and Wear Resistance of a Modified Hadfield Steel

Initial wear characteristics of aging‐treated ZG120Mn13 steel under steel shot at high‐velocity impact

Compression Deformation Behavior of a Fe–26Mn–7Al–1.3C Austenitic Steel after Precipitation‐Hardened Treatment

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