Influence of Ce on Microstructure and Properties of High-carbon High-boron Steel

Xiang, Yanhong; Chen, Zhiguo; Wei, Xiang; Zhongjia, Wu

doi:10.1016/s1875-5372(15)30085-0

Cited by 24 publications

(10 citation statements)

References 8 publications

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“…Therefore, the primary austenite grains and borides could be refined by the addition of Ce. Moreover, Ce could promote the distribution uniformity of borides according to our previous research [35]. The formation of blocky M 2 B began when 1.04 wt.% Mo was added, and the fish-bone M 2 B still existed according to Figure 6b.…”

Section: Microstructurementioning

confidence: 58%

“…Alloying is a direct and effective means to improve the properties of alloys [27]. In order to improve the toughness of HBCS, Cr, W, Cu, Ni, and other elements have been widely investigated [21,[28][29][30][31][32][33][34][35]. Ma [21] and Lentz [28] et al pointed out that with an increase of Cr, the morphology of Fe 2 B changes from a blocky shape to a rod-like shape.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of Ce on microstructure of high boron steel has been studied by our group [35]. The results indicate that the primary austenite grains can be greatly refined by the addition of Ce.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Mo Concentration on the Microstructure Evolution and Properties of High Boron Cast Steel

et al. 2020

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The microstructure evolution, mechanical properties, and tribological properties of high boron cast steel (HBCS) with various Mo concentrations are investigated. The results indicate that Mo addition can significantly modify the microstructure and enhance the comprehensive properties. With the increase of Mo concentration, borides change from the original fish-bone Fe-rich and Cr-rich M2B to dendritic Fe-rich M2B, blocky and cluster-like Cr-rich M2B, and grainy Mo-rich M2B. The hardness of HBCS increases gradually with the increase of Mo content due to the solid solution strengthening and the refinement of M2B. It can be found that all the samples exhibit quasi-cleavage, but the impact toughness increases firstly and reaches the maximum value when the concentration of Mo is 2.10 wt.%, which is the result of the dispersive distribution of M2B rather than the original fish-bone M2B. Subsequently, the impact toughness begins to decrease as the concentration of Mo further increases because of the extensive formation of grainy Mo-rich M2B at the grain boundary. Meanwhile, the wear results reveal that the average friction coefficient and wear ratio decrease with the increase of Mo content, and the wear mechanism changes from abrasive wear and adhesive wear to abrasive wear when the concentration of Mo exceeds 2.10 wt.%.

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Section: Microstructurementioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

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Effect of Mo Concentration on the Microstructure Evolution and Properties of High Boron Cast Steel

et al. 2020

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“…The eutectic reaction (L → (γ +MC)) occurs when the vanadium content is decreased to the point of eutectic composition. [7][8][12][13][14][15][16] The austenite is not a faceted crystal, but the VC is a typical faceted crystal. Both have a relatively large divorced eutectic tendency.…”

Section: Resultsmentioning

confidence: 99%

Effects of Cr and V additions on the microstructure and properties of high-vanadium wear-resistant alloy steel

et al. 2016

Ironmaking & Steelmaking

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The effects of chromium and vanadium additions on the microstructure, hardness and wear resistance of high-vanadium alloy steel (containing 5-10 wt-% V and 2-10 wt-% Cr) were studied by means of optical microscopy, scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive spectrometer (EDS), Vickers hardness and Rockwell-hardness tester & M-200 ring block wear tester. Researching results showed that the solidification structure of high-vanadium wear-resistant alloy steel was mainly consisted α-Fe (martensite), vanadium carbide (VC), M 3 C and M 7 C 3 . Vanadium is mainly distributed over VC, and certain amount of vanadium exists in the matrix and M 7 C 3 type eutectic carbide. Chromium is mainly distributed over the M 7 C 3 , and the matrix also contains a small quantity of chromium. It is found that the content of VC increases with the increase of vanadium content when carbon and chromium contents are constant. The change of micro-and macro-hardness was not obvious with the increase of vanadium content. The content of M 7 C 3 type eutectic carbides increases gradually with the increase of chromium content when carbon and vanadium contents are constant. The micro-and macro-hardness increases with the increase of chromium content. The increase of vanadium content brings to the increase of wear resistance of alloy steel when carbon and chromium contents are constant. The change of chromium content had no obvious effect on wear resistance of high-vanadium alloy steel when carbon and vanadium contents. The increase of vanadium content brings to the increase of wear resistance of alloy steel when carbon and chromium contents are constant. The wear resistance of as-cast high-vanadium alloy steel is the best when the content of vanadium and chromium is 10 wt-% and 5 wt-% respectively.

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“…As an example, it influences the dissolution and precipitation process of the internal carbides of steel. [18][19][20][21][22][23][24] Characterization of RE elements is of critical importance for their effective usage in alloys and control of their influence on the microstructures of the materials formed. The different forms of RE elements in steel can be roughly divided into two categories, namely, a combination or a solid solution.…”

Section: Introductionmentioning

confidence: 99%

Chemical states of ppm cerium in steel by ToF‐SIMS analysis

Dai

Guo

Wang

et al. 2019

Surface & Interface Analysis

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Time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) was employed for an analysis of the rare earth element Ce in pure iron and steel. Secondary ion images showed that the amount of the segregation of Ce and its oxides was much less as the concentration of Ce decreased to about 11 ppm in the pure iron. In terms of depth profiling from the surface to the matrix, variation of the CeO+/Ce+ ratio in a Ce oxides sample and a pure Ce sample exhibited difference between oxidized state and metallic state. It was demonstrated that metallic Ce was presented when the ratio of CeO+/Ce+ decreased to approximately 2 and even smaller. Oxygen content with concentration of tens of ppm may influence the ratio obviously. Such ToF‐SIMS analysis was also feasible to discern the states of cerium in a Q345E steel with concentration in ppm level.

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Influence of Ce on Microstructure and Properties of High-carbon High-boron Steel

Cited by 24 publications

References 8 publications

Effect of Mo Concentration on the Microstructure Evolution and Properties of High Boron Cast Steel

Effect of Mo Concentration on the Microstructure Evolution and Properties of High Boron Cast Steel

Effects of Cr and V additions on the microstructure and properties of high-vanadium wear-resistant alloy steel

Chemical states of ppm cerium in steel by ToF‐SIMS analysis

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