The influence of vanadium on fracture toughness and abrasion resistance in high chromium white cast irons

Radulovic, M.; Fiset, M.; Peev, K.; Tomović, Milena

doi:10.1007/bf01151101

Cited by 105 publications

(56 citation statements)

References 12 publications

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“…2,12) Vanadium additions of up to 4 mass% are also said to improve the fracture toughness of both 19% Cr and 27% Cr-3% C irons by refining the eutectic carbide structures. 13,14) Dupin and Schissler 15) had previously noted that an addition of 1 mass% V in 20% Cr-2.6% C iron did not produce any vanadium carbide precipitate, but did have a refining effect on the eutectic carbide. Also, A.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] The effects of additional alloying elements in high chromium irons have been extensively studied. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] Normally, alloying additions such as nickel, manganese, molybdenum and copper are used to increase hardenability and to prevent pearlite formation. 2,6) High chromium irons alloyed with carbide-forming elements such as molybdenum, vanadium and tungsten have been developed for special applications such as hot working mill rolls in the steel industry.…”

Section: Introductionmentioning

confidence: 99%

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Solidification of High Chromium White Cast Iron Alloyed with Vanadium

2011

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Experimental results indicate that vanadium affects the solidification process in high chromium iron. Vanadium is distributed between eutectic M 7 C 3 carbide and the matrix, but its content in carbide is considerably higher. Also, this element forms vanadium carbide. TEM observation reveals that vanadium carbide present in examined Fe-Cr-C-V alloys is being of M 6 C 5 type. DTA analysis found that with increasing vanadium content in tested alloys, liquidus temperature is decreasing, while eutectic temperature is increasing, i.e. the solidification temperature interval reduces. The narrowing of the solidification temperature interval and the formation of larger amount of vanadium carbides, as a result of the increase in the vanadium content of the alloy, will favour the appearance of a finer structure. In addition, the phases volume fraction will change, i.e. the primary -phase fraction will decrease and the amount of M 7 C 3 carbide will increase.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Solidification of High Chromium White Cast Iron Alloyed with Vanadium

2011

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“…The V forms a hard vanadium carbide by combining with C. This result agrees well with other research work that the primary carbides could precipitate when the V content got over 2%. 6,8) The matrix structures of all the specimens are mostly austenitic (£) but some martensite phases exist in the austenite. The amount of martensite increases as the V content rises.…”

Section: As-cast Statementioning

confidence: 99%

“…It was reported that the V improved the fracture toughness of cast iron by refining the carbide structure. 8) In a sense, the existence of austenite in the matrix of high Cr white cast iron is helpful to abrasive wear resistance because austenite has high toughness and causes workhardening due to the generation of strain-induced martensite during employment.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Sub-Critical Heat Treatment on Hardness, Retained Austenite and Abrasive Wear Resistance of Hypoeutectic 16 mass% Cr-2 mass% Mo Cast Iron with Varying Vanadium Content

et al. 2016

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To increase the matrix hardness without complete hardening, a sub-critical heat treatment was performed by holding the as-cast iron below the pearlite transformation temperature (A 1 ), and exposed to a hypoeutectic 16 mass% Cr-2 mass% Mo cast iron with a 03 mass% vanadium (V). The temperatures were held between 723 K and 923 K with 50 K intervals for 14.443.2 ks and then cooled via air from a fan. In the as-cast state, the hardness of the cast iron increased progressively and the volume fraction of retained austenite (V£) decreased gradually as the V content of specimen rose. With the sub-critical heat treatment, the hardness increased initially and then decreased with an increase in holding temperature. Conversely, the V£ was reduced greatly when the holding temperature was elevated above 823 K. The maximum hardness in the sub-critical heat treatment (H STmax ) was obtained in the temperature range of 823873 K, while the V£ values were approximately 2030%. The largest H STmax value of 830 HV30 was obtained in the specimen with 3 mass% V. The abrasive wear resistance was evaluated by a Suga abrasion wear tester using the specimens heat-treated at selected conditions. The wear resistance increased as the V content increased with the highest wear resistance obtained in the specimens with H STmax .

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“…Such a change can be achieved by alloying and/or heat treatment. [1][2][3][4][5] Possibilities for improving the properties of a high chromium white iron, using explicitly carbidizing elements as tungsten, 6,7) niobium, 6,[8][9][10][11][12] vanadium, [5][6][7][12][13][14][15][16] titanium, 8,12,17) and boron 18) were studied in a great deal. Vanadium appeared to be of special interest, due to its double effect, on both the matrix structure and stereological characteristics of carbide.…”

Section: Introductionmentioning

confidence: 99%

Matrix Microstructure and Its Micro-Analysis of Constituent Phases in As-Cast Fe-Cr-C-V Alloys

et al. 2009

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The as-cast matrix microstructure in 19 mass%Cr-2.8 mass%C white cast iron with up to 4.7 mass% V additions has been studied. Type and degree of the austenite transformation in the course of cooling after solidification in Fe-Cr-C-V alloys appeared to be dependent on the content of carbon and other alloying elements. Results obtained by EDS analysis of the phases in the tested Fe-Cr-C-V alloys indicated that vanadium is present in both matrix and carbide. Increasing the vanadium content in the alloy, its concentration increases in the matrix, whereas the concentration of carbon decreases. The precipitation kinetic of carbides in austenite was found dependent on the vanadium content. The volume fraction of M 23 C 6 carbides was larger when the vanadium content was higher. TEM analysis revealed that both twinned and dislocation type martensites were present around secondary carbides. The transformation of austenite into martensite in the Fe-C-Cr-V alloys seems to be closely related to the precipitation of secondary carbides.

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The influence of vanadium on fracture toughness and abrasion resistance in high chromium white cast irons

Cited by 105 publications

References 12 publications

Solidification of High Chromium White Cast Iron Alloyed with Vanadium

Solidification of High Chromium White Cast Iron Alloyed with Vanadium

The Effect of Sub-Critical Heat Treatment on Hardness, Retained Austenite and Abrasive Wear Resistance of Hypoeutectic 16 mass% Cr-2 mass% Mo Cast Iron with Varying Vanadium Content

Matrix Microstructure and Its Micro-Analysis of Constituent Phases in As-Cast Fe-Cr-C-V Alloys

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