Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions

Wang, Zhongyang; Xi, Wu; Liu, Denghui; Zuo, Xunwei

doi:10.3389/fmats.2021.691551

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…This can be attributed to the increased contents of niobium and aluminum microadditives. The above-mentioned elements tend to form intermetallic phases, which block the migration of grain boundaries at high temperatures, thus allowing a fine-grained structure to be obtained [ 33 , 34 , 35 ]. Moreover, the microstructure morphology of Hardox Extreme steel was characterized by the presence of abnormal grains larger than 50 µm.…”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

Analysis of Wear Properties of Hardox Steels in Different Soil Conditions

et al. 2022

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“…And after martensitic transformation, the auto-tempering of martensite occurs in the FRT-700 and FRT-900 samples during the subsequent air-cooled process, resulting in martensite recovery and precipitation of bright white carbides in the matrix. For Hardox450 steel, the microstructure after quenching and tempering is a typical tempered martensite [19]. And the lath martensite structure in samples is refined with the decrease of austenite grain size.…”

Section: Microstructure and Propertiesmentioning

confidence: 99%

Dry sliding wear behaviour of hot-rolled air-cooled medium manganese martensitic steel

Han

Yang

et al. 2023

Materials Science and Technology

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The microstructure, mechanical properties and dry sliding wear behaviour of hot-rolled air-cooled medium manganese martensitic steel at different finish rolling temperatures (FRT) were investigated. The fully martensitic structure with precipitation of acicular carbides in the matrix was obtained in the air-cooled process after hot rolling. With the decrease of FRT, the mechanical properties and sliding wear resistance of experimental steels were significantly improved. The worn surface morphology was mainly furrows, and the wear mechanism was micro-cutting. Both the width and depth of the furrows increased with the increasing hardness of the experimental steels. The mass loss rates of FRT-700, FRT-900 and Hardox450 samples were 4.53 × 10-4 g/m, 4.82 × 10-4 g/m and 5.14 × 10-4 g/m, respectively.

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“…In the authors' previous studies, the broken process of micron-scale TiN in NM500 wear-resistant steel was investigated [7], and the correlation between the microstructure and the fracture behavior of TiN inclusions was also been studied [17]. However, the TiC breakage mechanism and the size control of the TiN and TiC inclusions have not been reported thus far.…”

Section: Introductionmentioning

confidence: 99%

Study of the Fracture Behavior of TiN and TiC Inclusions in NM550 Wear-Resistant Steel during the Tensile Process

Liu

Zhong-yang

Liu

et al. 2022

Metals

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NM550 wear-resistant steel is widely used in large-scale engineering and mining machinery under extremely harsh working conditions. In NM550 steel, the addition of Ti can cause the formation of micron-scale TiN and TiC inclusions, easily triggering cleavage fractures. The fracture behavior and precipitation rule of micron-scale TiN and TiC inclusions on the tensile process in NM550 steel was investigated by scanning electron microscopy, transmission electron microscopy, and energy spectrum analysis combined with thermodynamic theory. The TiN precipitated in the solid–liquid two-phase region at a precipitation temperature of 1710 K, whereas that of TiC was 1158 K along the austenite grain boundary. The sizes of the TiN precipitated in the liquid phase and the TiC precipitated in austenite were both at the micron scale, which is prone to cleavage fracture during the stretching process. Under tensile stress, microcracks were first initiated at the TiN inclusion, which were further separated forming a hole, whereas the TiC inclusion was divided into two sections with a long and narrow gap formed between the substrates. The sizes of the TiN and TiC were related to the cooling rate, Ti, and N contents. The larger the cooling rate and the lesser the Ti and N content, the smaller the TiN and TiC sizes.

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Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions

Cited by 7 publications

References 23 publications

Analysis of Wear Properties of Hardox Steels in Different Soil Conditions

Analysis of Wear Properties of Hardox Steels in Different Soil Conditions

Dry sliding wear behaviour of hot-rolled air-cooled medium manganese martensitic steel

Study of the Fracture Behavior of TiN and TiC Inclusions in NM550 Wear-Resistant Steel during the Tensile Process

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