Impact-abrasive wear of martensitic steels and complex iron-based hardfacing alloys

Rojacz, H.; Katsich, Christian; Kirchgaßner, M.; Kirchmayer, R.; Badisch, E.

doi:10.1016/j.wear.2021.204183

Cited by 17 publications

(27 citation statements)

References 40 publications

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“…hexagonal, needle/spine, polygonal). The beneficial behaviour of a complex-alloyed Fe-Cr-C-based hardfacing at ambient temperatures were priorly shown in a study by the authors [11], but HT behaviour still lacks thorough investigation in literature. With this work we combine two approaches, HT impact-abrasion as well as HT scratch testing to study the efficiency of different carbides to withstand the expected load regimes.…”

Section: Introductionmentioning

confidence: 92%

“…No general wear protection solution can be proposed, since impact-abrasive attack strongly relies on the impact energy, the abrasive particle hardness, their size and the temperature level [9,10]. For impact-abrasion at increased temperature, the presence of hardphases may increase the lifetime of used core components such as sieves or crusher [8,10,11]. Therefore Fe-Cr-C-based hardfacings can be a good alternative for elevated temperatures, due to their better high temperature (HT) stability.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore Fe-Cr-C-based hardfacings can be a good alternative for elevated temperatures, due to their better high temperature (HT) stability. Nevertheless, certain limitations in impactdominated tribosystems can be pointed out due to their coarse chromium carbide-based hardphases, since coarse hardphases lack of stability [8,11]. Therefore, complex alloyed Fe-Cr-C(B)-based hardfacings with addition of Mo, W, Nb, and Si * Corresponding author: Harald Rojacz, harald.rojacz@ac2t.at, Phone: +43 2622 8166 171 have been developed showing an improved behaviour in impact-abrasive wear due to finer dispersed hardphases.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

How the micro-mechanical stability of carbides in chromium-rich hardfacings influences the impact-abrasion resistance at elevated temperatures

Rojacz

Katsich

Varga

et al. 2023

Wear

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

How the micro-mechanical stability of carbides in chromium-rich hardfacings influences the impact-abrasion resistance at elevated temperatures

Rojacz

Katsich

Varga

et al. 2023

Wear

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

How the micro-mechanical stability of carbides in chromium-rich hardfacings influences the impact-abrasion resistance at elevated temperatures

Rojacz

Katsich

Varga

et al. 2023

Preprint

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Highly loaded wear components in applications such as crushers or sieves suffer from combined impact and abrasive wear, in the worst case exaggerated by high operation temperatures. Hardfacings based on the system FeCrC with high hardphase content are promising candidates for such applications. Understanding of the influence of precipitated carbides or carbo-borides on the impact-abrasive wear resistance is therefore of high importance to increase the lifetime, decrease downtime as well as maintenance costs. In this study, two different FeCrC-based hardfacings were chosen for investigation, an FeCrC-alloy and a complex alloyed FeCrNbMoBC type. A thorough microstructural analysis was performed via scanning electron microscopy. Here, present hardphases, namely chromium carbides, chromium carbo-borides as well as niobium carbides were found. To evaluate the hardness H and Young’s modulus E nanoindentation measurements were performed and the plasticity indicating ratios H/E and H³/E² were derived. Scratch tests at elevated temperatures were performed identifying critical loads for carbide displacement and fracture. Those critical loads as well as the plasticity indexing parameters were correlated with the impact-abrasion behaviour of the two hardfacings via high-temperature cyclic impact abrasion tests up to 500°C. Results showed higher impact-abrasion resistance of the complex-alloyed FeCrC-based hardfacing due to better stability of the carbides as well as optimal ratios H/E and H³/E² indicating increased plasticity and thereby better impact resistance.

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“…It can be generally concluded that the main factor contributing to an increase in abrasive wear resistance is the hardness level, which increases with an increase in the carbon content. The above statement refers to hard-faced materials [ 9 , 10 , 11 ], chromium cast iron [ 12 ], and martensitic steels [ 13 , 14 ]. It should be noted, however, that selected microstructural parameters (the presence of secondary phases or the former austenite grain size) should also be considered when assessing the abrasive wear resistance, thus affecting the different wear characteristics, even among materials of the same hardness in impact [ 15 , 16 ], abrasive [ 17 , 18 ], and sliding wear conditions [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Wear Properties of Hardox Steels in Different Soil Conditions

et al. 2022

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This paper presents the results of wear tests of three types of commercial abrasion-resistant steels. The samples, cut from commercially available sheets of metal, were subjected to wear tests to a total friction path of 20,000 m. The tests were provided using the “rotating bowl” method in three types of natural soil masses. The soil moisture and test parameters were kept constant. The tests were carried out in six replications for each material. The testing results indicate that hardness does not determine the resistance to abrasive wear, which is supported by the weight loss results for particular materials. Hardox 600 steel, which is not characterized by the highest hardness, exhibited the lowest weight loss value compared to the other materials in all test soils. For the light soil, the weight loss for Hardox 600 was approx. 1.3 times lower than for Hardox 500 steel and approx. 1.6 times higher than for Hardox Extreme steel. With regards to the medium and heavy soil, the weight losses for Hardox 600 in relation to Hardox 500 steel were approx. 1.7 and 1.6 times lower, respectively, while in relation to Hardox Extreme steel the weight losses were 1.5 and 1.7 times higher, respectively.

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Impact-abrasive wear of martensitic steels and complex iron-based hardfacing alloys

Cited by 17 publications

References 40 publications

How the micro-mechanical stability of carbides in chromium-rich hardfacings influences the impact-abrasion resistance at elevated temperatures

How the micro-mechanical stability of carbides in chromium-rich hardfacings influences the impact-abrasion resistance at elevated temperatures

How the micro-mechanical stability of carbides in chromium-rich hardfacings influences the impact-abrasion resistance at elevated temperatures

Analysis of Wear Properties of Hardox Steels in Different Soil Conditions

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