Relationship between the microstructure and properties of thermomechanically processed Fe−17Mn and Fe−17Mn−3Al steels

Dalai, Renuprava; Das, Siddhartha; Das, Karabi

doi:10.1007/s12613-019-1710-3

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…On one hand, the lattice friction of Had eld steel can be calculated by tensile testing of two specimens with different grain sizes; then, from the Hall-Petch equation, the lattice friction can be calculated [15,25,27]. On the one hand, σ s can be neglected as a result of using of high strain rates.…”

Section: Lattice Friction and Dsamentioning

confidence: 99%

See 1 more Smart Citation

Strengthening Contributions of Mechanical Twinning and Dislocations to the Flow Stress of Hadfield High-Manganese Steel: Quantitative Analysis

Khedr

Min

et al. 2022

J. of Materi Eng and Perform

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The ow stress of high C-Mn austenitic steel is attributed to lattice friction, dynamic strain aging (DSA), mechanical twinning and forest hardening. However, it has not been clari ed yet which mechanism quantitatively contributes most to the work hardening of 12.5Mn-1.1C steel. In this study, austenitic Had eld steel (1.1 wt.% C and 12.5 wt.% Mn) was tensile tested at a strain rate of 10 s − 1 . The lattice friction was estimated by the Hall-Petch relationship. DSA effect was neglected because of the high strain rate of deformation. Twin plates characteristics and dislocation densities were estimated quantitatively at different strain levels (11, 18, 25, 38, and 55%). The deformed twin plates were studied by optical and transmission electron microscopies. Dislocation densities were estimated by analyzing the X-ray diffraction patterns using Rietveld analyses. A linear approach was utilized to model the ow stress during the plastic deformation, and it is found that the linear model is consistent with the experimental results. During the early stages of the plastic deformation, the mechanical twinning was the dominant deformation mechanism, and it was more effective to the ow stress than the forest hardening due to the enhancement of the twin nucleation process. However, with increasing the strain level, the thicknesses of the twinned plates were increased rather than the initiation of new twin plates, resulting in a reduced contribution by the mechanical twinning to the ow stress. On the other hand, increasing the dislocation densities with an increase in the strain level was detected, which resulted in an enhanced contribution by forest hardening to the ow stress more than the mechanical twinning.

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Section: Lattice Friction and Dsamentioning

confidence: 99%

“…The yield strength (YS) of the cold-rolled and heat-treated samples was compared with that of the asreceived steel to estimate the lattice friction of the Had eld steel using the Hall-Petch relationship [22,27].…”

Section: Lattice Friction and Dsamentioning

confidence: 99%

Strengthening Contributions of Mechanical Twinning and Dislocations to the Flow Stress of Hadfield High-Manganese Steel: Quantitative Analysis

Khedr

Min

et al. 2022

J. of Materi Eng and Perform

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“…It is established by the authors [27][28][29][30][31] that one of the effective means of improving the strength properties of steels is high-temperature thermomechanical treatment, that consists in combining the plastic deformation of steel in austenitic state with hardening. As a result of this treatment, the ductility, toughness, and fatigue strength of the steel increase simultaneously with the enhance in hardness, yield strength, and tensile strength.…”

Section: Analytical Review Of the Effect Of High-temperature Thermome...mentioning

confidence: 99%

The Effect of Finely Divided Martensite of Austenitic High Manganese Steel on the Wear Resistance of the Excavator Buckets Teeth

Bolobov

Chupin

Bochkov

et al. 2020

KEM

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An analytical review of the effect of high-temperature thermomechanical treatment on the structure and properties of steels as a possible effective method of strengthening the teeth of excavator buckets. It is shown that the application of this method can have a positive effect not only on the hardness, but also on the entire complex of their mechanical characteristics, such as plasticity, impact toughness and fatigue resistance. In relation to Hadfield steel as the most frequently used material of the bucket teeth, it is noted that with increasing deformation grade of billets from 1 to 5, tensile strength of steel increases from 570 to 1030 MPa, yield strength – from 480 to 790 MPa, relative elongation – from 14.3 to 17.9 %, relative contraction – from 17.2 to 20.1 %, impact strength KCU – from 1.51 to 2.14 MJ/m2. This article presents the results of metallographic analysis and comparative tests for abrasive wear of Hadfield steel samples after typical heat treatment practiced at bucket teeth manufacturers and thermomechanical treatment. It is established that high-temperature plastic deformation of steel samples before quenching increases their wear resistance by 1.7 times. The authors attribute the detected increase in wear resistance to the formation of fine martensite in the surface layers of steel with a needle size of 3-10 nm, which increases its hardness by 47%. It is concluded that the presence of fine martensite in the structure of Hadfield steel can increase the service life of excavator bucket teeth made of this material. The results of this study are planned to be used in the development of an improved technological process for manufacturing bucket teeth of excavators.

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Effect of Thermo–Processing on the Microstructure, Impact Abrasion Wear, and Corrosion Resistance Properties of TiC Reinforced Al-Added High-Mn Steel Matrix Composite

Dalai

Mohapatra

Das

et al. 2023

JOM

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Relationship between the microstructure and properties of thermomechanically processed Fe−17Mn and Fe−17Mn−3Al steels

Cited by 5 publications

References 27 publications

Strengthening Contributions of Mechanical Twinning and Dislocations to the Flow Stress of Hadfield High-Manganese Steel: Quantitative Analysis

Strengthening Contributions of Mechanical Twinning and Dislocations to the Flow Stress of Hadfield High-Manganese Steel: Quantitative Analysis

The Effect of Finely Divided Martensite of Austenitic High Manganese Steel on the Wear Resistance of the Excavator Buckets Teeth

Effect of Thermo–Processing on the Microstructure, Impact Abrasion Wear, and Corrosion Resistance Properties of TiC Reinforced Al-Added High-Mn Steel Matrix Composite

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