The impact wear-resistance enhancement mechanism of medium manganese steel and its applications in mining machines

Aiming at improving the impact wear-resistant performance of metals, a new sort of surfacing electrode named TKCE50 was developed in this paper. This electrode is a Fe-Mn-Cr-Mo-V alloy system and belongs to iron-base wear-resistant materials. Tests like hardness, wear loss and impact-abrasion test were performed on the samples surfaced with the electrode. The results indicated that TKCE50 had not only good welding technological properties, but also super work-hardening effect and perfect impact wear-resistance. In addition, the work-hardening and wear-resistant mechanisms for this electrode were discussed based on corresponding experimental investigation and theoretical analysis.

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Fabrication of TiC Particles Reinforced Hadfield Steel Matrix Composite and its Wear-Resistance

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.1442 ◽

2007 ◽

Vol 336-338 ◽

pp. 1442-1444

Author(s):

Xiao Le Cheng ◽

Yi Min Gao ◽

Jian Dong Xing ◽

Min Tan ◽

Guo Shang Zhang ◽

...

Keyword(s):

Wear Resistance ◽

Liquid Phase Sintering ◽

Hadfield Steel ◽

Impact Loads ◽

Steel Matrix ◽

Matrix Composites ◽

Impact Wear ◽

Wear Resistant ◽

The Impact ◽

Wear Tests

The TiC particles are selected as reinforced phase and the Hadfield steel as matrix. The powder metallurgy liquid phase sintering technique is adopted to fabricate TiC particles reinforced Hadfield steel matrix composites. The effects of elements Mo and Ni on the performance of the composites were studied. The impact wear tester is adopted to investigate the wear-resistant property of the composites under the different impact loads. Adding Mo can improve the interfacial bonding between the Hadfield steel and TiC, and the best adding ratio between Mo and TiC is 1:3.68. Adding 2%(vol.%)Ni can significantly improve the density and hardness of the composites. The experiment results of impact wear tests show that under the condition of low and middling loads, the composites display the best wear-resistant properties, moreover, the more TiC content is, the better wear-resistance property is. Under 2.0J impact energy, the wear resistance of the composite containing 40%(vol.%) TiC is 1.3 times of Hadfield steel.

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Study of the Impact Abrasive Wear of New Super-High Manganese Steel

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.575-576.550 ◽

2013 ◽

Vol 575-576 ◽

pp. 550-553

Author(s):

Wen Yan Wang ◽

Jian Xu ◽

Jing Pei Xie

Keyword(s):

Wear Resistance ◽

Abrasive Wear ◽

Impact Energy ◽

Wear Surface ◽

Manganese Steel ◽

Deformation Bands ◽

High Manganese ◽

High Manganese Steel ◽

Short Time ◽

The Impact

Based on the traditional Mn13, the super-high manganese steel Mn18 was melted by means of adjusting the amount of C, Mn, adding a certain amount of alloying elements Cr, Mo etc and modification. The results show that with low-impact energy abrasive wear for 60 minutes, the wear resistance of super-high manganese steel Mn18 was greatly improved by contrast with that of Mn13, and the hardness of wear surface was increased slowly with the elapse of the wear time. However, under the high impact energy, the wear resistance of Mn18 is 1.5 times as high as that of Mn13, and the hardness of wear surface was increased to HB440 in a short time. The main wear forms were: cutting, gouging wear and plastic deformation. Typical TEM morphologies of subsurface wear structure consist mostly of high density dislocations, deformation bands.

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The influence of induction hardening on the impact wear resistance of compacted graphite iron (CGI)

Wear ◽

10.1016/j.wear.2010.11.003 ◽

2011 ◽

Vol 270 (3-4) ◽

pp. 302-311 ◽

Cited By ~ 26

Author(s):

T. Slatter ◽

R. Lewis ◽

A.H. Jones

Keyword(s):

Wear Resistance ◽

Induction Hardening ◽

Compacted Graphite Iron ◽

Impact Wear ◽

Compacted Graphite ◽

The Impact

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The significance of microstructural evolution on governing impact toughness of Fe-0.2C-6Mn-3Al medium-Mn TRIP steel studied by a novel heat treatment

International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) ◽

10.1515/ijmr-2020-7877 ◽

2021 ◽

Vol 112 (4) ◽

pp. 271-279

Author(s):

Zhichao Li ◽

Xinjing Li ◽

Yanjie Mou ◽

Zhihui Cai ◽

Devesh Misra ◽

...

Keyword(s):

Impact Toughness ◽

Trip Steel ◽

Volume Fraction ◽

High Impact ◽

Manganese Steel ◽

X Ray Diffraction ◽

Tempering Temperature ◽

Medium Manganese Steel ◽

Fundamental Understanding ◽

The Impact

Abstract We address here the continuing challenge and scientific gap in obtaining high impact toughness in medium-Mn steels. While addressing the challenge, the objective of the study described here is to obtain a fundamental understanding via critical experimental analysis of the reasons underlying high impact toughness that was successfully obtained in Fe-0.2C-6Mn-3Al medium-Mn TRIP steel. Electron microscopy and X-ray diffraction studies clearly underscored the absence of the TRIP effect in Fe-0.2C-6Mn-3Al medium manganese steel during impact and the volume fraction of austenite played a determining role in governing impact toughness. The highest impact toughness of 213.6 J · cm–2 was obtained when the steel was subjected to an intercritical hardening temperature of 700 °C and low tempering temperature of 200 °C. The presence of martensite in the microstructure reduced the impact toughness on quenching from 750 – 850 °C.

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Impact and Rolling Abrasive Wear Behavior and Hardening Mechanism for Hot-Rolled Medium-Manganese Steel

Journal of Tribology ◽

10.1115/1.4038414 ◽

2018 ◽

Vol 140 (3) ◽

Cited By ~ 2

Author(s):

Jian Wang ◽

Qingliang Wang ◽

Xiao Zhang ◽

Dekun Zhang

Keyword(s):

Wear Resistance ◽

Martensitic Transformation ◽

Work Hardening ◽

Wear Behavior ◽

Manganese Steel ◽

High Manganese ◽

High Manganese Steel ◽

Medium Manganese Steel ◽

Dislocation Strengthening ◽

Hot Rolled

The coupled impact and rolling wear behavior of the medium-manganese austenitic steel (Mn8) were studied by comparison with the traditional Hadfield (Mn13) steel. Scanning electron microscopy (SEM), X-ray diffractometer (XRD), and transmission electron microscope (TEM) were used to analyze the wear and hardening mechanisms. The experimental results show that the impact and rolling wear resistance of hot-rolled medium-manganese steel (Mn8) is better than that of high-manganese steel (Mn13) under conditions of low-impact load. The better work hardening sensitivity effectively improves the wear resistance of medium-manganese steel. Not only the coefficient of friction is low, but the mass loss and wear rate of the wear are lower than that of high-manganese steel. After impact and rolling wear, a hardened layer with a thickness of about 600 μm is formed on the wear surface. The highest microhardness of the subsurface layer for Mn8 is about 594 HV and the corresponding Rockwell hardness is about 55 HRC, showing the remarkable work hardening effect. The wear-resistant strengthening mechanism of medium-manganese steel is compound strengthening, including the deformation-induced martensitic transformation, dislocation strengthening, and twin strengthening. In initial stages of impact and rolling abrasion, dislocation strengthening plays a major role. When the deformation reaches a certain extent, the deformation-induced martensitic transformation and twinning strengthening begin to play a leading role.

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