Abrasion-resistant as-cast manganese steel with nodular carbide modified by calcium

Qi‐Chuan, Jang; He, Zhenming; Donghuan, C.; Shoushi, Wang; Jiulin, Yan

doi:10.1007/bf00725896

Cited by 16 publications

(14 citation statements)

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“…There was a previous works aimed at modifying the morphology of cementite network formed in as‐cast medium manganese steel by using different carbide modifiers as a ladle treatment. They confirmed that the network carbides can be reformed by forming eutectic between γ‐austenite and (Fe,Mn) 3 C between the austenite dendrites at the beginning of solidification process …”

Section: Introductionmentioning

confidence: 75%

“…Its micro‐structure is mainly single phase (γ) in which the carbide compulsorily dissolved by high‐temperature quenching, while its structure in as‐cast model is needle network carbides (Fe,Mn) 3 C precipitated on austenite grains . In as‐cast state, these precipitates increase hardness, but deteriorate the other mechanical properties in particular toughness.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Ca–Si Modifiers on the Carbide Precipitation of As‐Cast Hadfield Steel

El-Fawkhry

Fathy

Eissa

2013

steel research int.

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In the present work, the effect of different Ca–Si percentage that were added to Hadfield steel on the microstructure, hardness, wear abrasion resistance, and impact toughness are investigated. The optical microscope results verify avoiding of cementite network forming with increasing of Ca–Si modifiers. The results obtained by SEM show that SiO2, CaO acts as nuclei for austenite and carbide eutectic formation. The eutectic‐formed affects on hardness, wear abrasion resistance, as well as linear enhancing of impact toughness of as‐cast condition more than 200%.

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Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Effect of Ca–Si Modifiers on the Carbide Precipitation of As‐Cast Hadfield Steel

El-Fawkhry

Fathy

Eissa

2013

steel research int.

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“…The wear resistance of AMMS increases with the increment of C content, while with which the toughness shall decrease greatly because the network and/or needle-like carbides appear in the austenite matrix [2]. In the previous investigation [4], the carbides have been changed into granular ␥-(Fe,Mn) 3 C eutectics with the Ca-Si agent modifier in the as-cast state.…”

Section: Introductionmentioning

confidence: 97%

“…Austenite medium Mn steel (AMMS) is developed mainly because the austenite structure has attractive strainhardening ability [1][2][3]. The wear resistance of AMMS increases with the increment of C content, while with which the toughness shall decrease greatly because the network and/or needle-like carbides appear in the austenite matrix [2].…”

Section: Introductionmentioning

confidence: 99%

Effects of growth rate and amount of Ca–Si modifier on the microstructure scales of granular eutectics in an austenite medium Mn steel

Liang

et al. 2004

Materials Science and Engineering: A

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“…Most investigations are aimed at improving its performance characteristics. This can be achieved by means of surface hardening [6][7][8][9] , alloying [10][11][12][13][14][15][16][17][18][19] and decreasing in the content of detrimental impurities [20,21] . Another way to improve the properties of this manganese steel is to investigate Abstract: The paper describes the investigation of mechanisms of cast structure formation in Hadfield steel depending on the changes in the cooling rate of a casting in the following two temperature ranges: crystallization temperature (1,200-1,390 °С) and the temperature of excessive phase separation (560-790 °С).…”

mentioning

confidence: 99%

Mechanisms of cast structure and stressed state formation in Hadfield steel

2016

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H adfield steel is widely used to manufacture various parts for mining, machine-building, metallurgy, railway and other industries. Wide application of this steel can be explained by a unique set of performance characteristics including improved wear resistance under loads [1][2][3][4] . In spite of the fact that this steel has been used for quite a long time, in recent decades it has been attracting considerable interest of scientists in different countries [5] . Most investigations are aimed at improving its performance characteristics. This can be achieved by means of surface hardening [6][7][8][9] , alloying [10][11][12][13][14][15][16][17][18][19] and decreasing in the content of detrimental impurities [20,21] . Another way to improve the properties of this manganese steel is to investigate Abstract: The paper describes the investigation of mechanisms of cast structure formation in Hadfield steel depending on the changes in the cooling rate of a casting in the following two temperature ranges: crystallization temperature (1,200-1,390 °С) and the temperature of excessive phase separation (560-790 °С). Changes in the cooling rate of the crystallization temperature range from 1.1 to 25.0 °С•s -1 result in the reduction of the average size of austenite grains from 266 to 131 µm. At the same time, the magnitude of developing shrinkage stresses changes from +195 to 0 MPa. When the cooling rate is higher than 16 °С•s its deformation mechanism as well as the influence of various factors on this mechanism [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] . There are a number of papers concerned with the investigation of the microstructure and properties of Hadfield steel in the as-cast and the heat-treated states [37][38][39][40][41] . The literature review shows that the performance characteristics of steel are influenced by its parameters, such as its microstructure, chemical composition (including content of certain structural components) and the stressed state. However, these relationships cannot be used in the process of production of specific items as the research was carried out using model homogenized alloys, and the cooling rate in the process of structure forming was not taken into account. At the same time, the wide range of products from this steel includes castings weighing from one to several hundred kilograms. This influences cooling rates during and after crystallization. Further, it is reflected in the changes of qualitative and quantitative characteristics of their cast structure. The cast structure, in its turn, is essential, and its relationships are inherited even after heat treatment. V ol.13 No.6 November 2016O v e r s e a s F o u n d r y CHINA FOUNDRY In order to predict the performance characteristics of castings on the basis of the earlier research works, it is necessary to carry out a number of further investigations. In particular, it is necessary to study the influence of the cooling rate on the structure of the as-cast Hadfield steel. This relationship will provide the depen...

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Abrasion-resistant as-cast manganese steel with nodular carbide modified by calcium

Cited by 16 publications

References 1 publication

Effect of Ca–Si Modifiers on the Carbide Precipitation of As‐Cast Hadfield Steel

Effect of Ca–Si Modifiers on the Carbide Precipitation of As‐Cast Hadfield Steel

Effects of growth rate and amount of Ca–Si modifier on the microstructure scales of granular eutectics in an austenite medium Mn steel

Mechanisms of cast structure and stressed state formation in Hadfield steel

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