Improved work-hardening ability and wear resistance of austenitic manganese steel under non-severe impact-loading conditions

He, Zhen-Ming; Jiang, Qi‐Chuan; Fu, Shao-Bo; Xie, Jingpei

doi:10.1016/0043-1648(87)90024-x

Cited by 62 publications

(20 citation statements)

References 8 publications

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“…Autentic manganese steel as a wear-resistant material has excellent strength and toughness but has poor wear resistance due to the absence of secondary phases in the austenitic matrix. [5] Wear-resistant white cast iron has high wear resistance because the eutectic carbides strongly resist abrasive wear, but it has low strength and toughness. [6] To overcome these deficiencies, a new type of austenitic steel matrix wear-resistant composite reinforced by in-situ granular eutectics, which possesses the advantages of austenitic steel and wear-resistant white cast iron, was created.…”

Section: Introductionmentioning

confidence: 99%

Study of the formation and intergrowth of granular eutectic in austenitic steel matrix composite by directional solidification technology

Liang

2006

Metall Mater Trans A

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The formation and intergrowth of granular eutectic in austenitic steel matrix composite has been studied by directional solidification technology. The results indicate that the modifying element Si enhances the dendritic segregation of C and Mn. The surface active elements, such as Y and Ca, concentrate highly ahead of the solid-liquid (S-L) interface of the composite due to the nonequilibrium solidification. As a result, the S-L interface of the composite is unstable during solidification. The spatiotemporal condition of the formation and the growth of the granular eutectic is the formation of granular eutectic between austenitic dendrite arms at the end of solidification and its growth restricted by the austenitic dendrites. By the simulating eutectic growth of the granular eutectic by Fe-C-Mn alloy, the Si, Ca, and Y adsorb and enrich on the growing surface of the eutectic during crystallization, which makes the crystallization model of the eutectic turn from facet/nonfacet to nonfacet/nonfacet. The intergrowth of the eutectic can be explained by (1) the influence of the modifying elements on the crystallization of the eutectic, (2) the coarse solidification growth interface of the eutectic and the same growth rate for austenite and cementite ((Fe, Mn) 3 C), and (3) the austenite and cementite ((Fe, Mn) 3 C) have not lateral branch during eutectic growth.

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Section: Introductionmentioning

confidence: 99%

Study of the formation and intergrowth of granular eutectic in austenitic steel matrix composite by directional solidification technology

Liang

2006

Metall Mater Trans A

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“…Compared with Hadfield steel, medium manganese steel has a higher work-hardening capacity and a better wear-resistant performance under low-stress abrasive conditions [6]. The work hardening ability and the wear-resistant performance of austenitic medium manganese steel increase by 60%−120% (the highest surface hardness is up to 700 HV) and 50%−140%, respectively [7].…”

Section: Introductionmentioning

confidence: 99%

Effects of impact energy on the wear resistance and work hardening mechanism of medium manganese austenitic steel

et al. 2017

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Medium manganese austenitic steel (MMAS) fabricated through the hot rolling process has been used in the mining, military, and mechanical industries. In this paper, the abrasion performance and hardening mechanism were measured under a series of impact energies. The impact wear was tested at different impact energies from 0.5 J to 6 J using a dynamic load abrasive wear tester (MLD-10). Microstructure and surface morphologies were analyzed using scanning electron microscopy, X-Ray diffraction, and transmission electron microscopy. The results suggest that MMSA has the best wear resistance at 3.5 J and the worst wear resistance at 1.5 J. Furthermore, the wear mechanism and worn surface microstructure change with different impact energies. There are small differences between a large amount of martensite on the worn surfaces under different impact energies and the shapes of dislocation and twins change with different impact energies.

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“…For example, the manganese steel has a higher rate of plastic deformation and hardening during the initial load cycles but at the same time a better adaptability of rail profile to meet the variation of worn wheel profiles in traffic. In addition, due to its work-hardening, the manganese steel has good toughness and wear resistance under severe impact loading conditions (see, e.g., [4]). …”

Section: Introductionmentioning

confidence: 99%

Metamodelling of wheel–rail normal contact in railway crossings with elasto-plastic material behaviour

Skrypnyk

Nielsen

Ekh

et al. 2018

Engineering with Computers

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A metamodel considering material plasticity is presented for computationally efficient prediction of wheel-rail normal contact in railway switches and crossings (S&C). The metamodel is inspired by the contact theory of Hertz, and for a given material, it computes the size of the contact patch and the maximum contact pressure as a function of the normal force and the local curvatures of the bodies in contact. The model is calibrated based on finite element (FE) simulations with an elastoplastic material model and is demonstrated for rail steel grade R350HT. The error of simplifying the contact geometry is discussed and quantified. For a moderate difference in contact curvature between wheel and rail, the metamodel is able to accurately predict the size of the contact patch and the maximum contact pressure. The accuracy is worse when there is a small difference in contact curvature, where the influence of variation in curvature within the contact patch becomes more significant. However, it is shown that such conditions lead to contact stresses that contribute less to accumulated plastic deformation. The metamodel allows for a vast reduction of computational effort compared to the original FE model as it is given in analytical form.

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Improved work-hardening ability and wear resistance of austenitic manganese steel under non-severe impact-loading conditions

Cited by 62 publications

References 8 publications

Study of the formation and intergrowth of granular eutectic in austenitic steel matrix composite by directional solidification technology

Study of the formation and intergrowth of granular eutectic in austenitic steel matrix composite by directional solidification technology

Effects of impact energy on the wear resistance and work hardening mechanism of medium manganese austenitic steel

Metamodelling of wheel–rail normal contact in railway crossings with elasto-plastic material behaviour

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