Microstructure and properties of Cu-bearing hypereutectic high chromium cast iron

Liqiang, Gong; Fu, Hanguang; Xing, Zhi

doi:10.1016/j.matchar.2022.112546

Cited by 9 publications

(4 citation statements)

References 25 publications

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“…The hardness of M 7 C 3 primary carbides remains between 1400 and 1600 HV, which is consistent with the literature. 20 Figure 9(b) shows the effect of N content on the macrohardness of as-cast HHCCI. The hardness of HHCCI is 54.7 HRC without N. After adding N, the hardness of HHCCI increases first, then decreases, and finally increases again.…”

Section: Resultsmentioning

confidence: 99%

“…The hardness of M 7 C 3 primary carbides remains between 1400 and 1600 HV, which is consistent with the literature. 20 The hardness of HHCCI is 54.7 HRC without N. After adding N, the hardness of HHCCI increases first, then decreases, and finally increases again. When the N content is 0.15 wt.% and 0.45 wt.%, the hardness of as-cast HHCCI is 56.8 HRC and 56.9 HRC, respectively.…”

Section: Microstructure and Mechanical Properties Of As-cast Hhccimentioning

confidence: 96%

“…Although the hardness of 0.45 wt.% sample is the highest, the wear resistance is not only related to the hardness, but also related to the matrix properties and the composition, distribution, content and size of the second phase. 20 The addition of N element improves the macrohardness of HHCCI and the strength of the matrix, and the generated Cr 2 N is precipitated in a dispersed granular form, which improves the wear resistance of HHCCI. When the N content continues to increase, these Cr 2 N particles will be connected together to form lamellar Cr 2 N, which is unfavourable for wear resistance, with the increase of N content, lamellar Cr 2 N will become coarser, which greatly reduces the wear resistance of HHCCI.…”

Section: Effect Of N Content On Corrosion Resistance Of As-cast Hhccimentioning

confidence: 99%

See 2 more Smart Citations

Microstructure and properties of hypereutectic high chromium cast iron containing nitrogen

Yawei,

Liqiang,

Minqi

et al. 2024

Materials Science and Technology

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This article investigates the effect of N content on the microstructure, mechanical properties and wear resistance of hypereutectic high chromium cast iron (HHCCI). With the increase of N content, the primary carbides are obviously refined, the austenite content increases, and the dispersed granular Cr2N precipitates. After quenching at 1000 °C, secondary carbides are precipitated from the matrix, the matrix transforms into martensite + retained austenite. With the increase of N content, the corrosion resistance of HHCCI increases, and 0.3 wt.% N HHCCI shows the best corrosion resistance. With the increase of N content, the wear resistance of HHCCI increases. The wear resistance of HHCCI with 0.15 wt.% N is the best, which is 1.57 times that of HHCCI without N.

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Section: Resultsmentioning

confidence: 99%

Section: Microstructure and Mechanical Properties Of As-cast Hhccimentioning

confidence: 96%

Section: Effect Of N Content On Corrosion Resistance Of As-cast Hhccimentioning

confidence: 99%

See 1 more Smart Citation

Microstructure and properties of hypereutectic high chromium cast iron containing nitrogen

Yawei,

Liqiang,

Minqi

et al. 2024

Materials Science and Technology

Self Cite

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“…During the solidification process of hypereutectic high-chromium cast iron, coarse primary carbides are formed, which reduces toughness. Defects such as cracks and shrinkage holes also easily occur during casting production, which restricts its application and promotion to a certain extent [1]. In order to improve the toughness of hypereutectic high-chromium cast iron and improve its comprehensive mechanical properties, domestic and foreign researchers have done a lot of research on refining primary carbides; the main methods include metamorphism and inoculation [2][3][4][5], heat treatment [6][7][8][9][10], pulsed current [11,12] treatment, etc.…”

Section: Introductionmentioning

confidence: 99%

Study on Simulation of Mold Filling and Solidification Characteristics of Hypereutectic High-Chromium Cast Iron by Lost Foam Suspension Casting

Ma,

2023

Metals

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In this paper, the finite element software ProCAST version 14.5 was used to simulate the temperature field, flow field and defect prediction in the filling and solidification process of hypereutectic high-chromium cast iron. The effects of pouring temperature, negative pressure and the amount of suspension agent added during the technological process were explored. The optimum process parameters were presented. It was found that the suspension agent has a certain hindrance to the filling process, but the filling process remains stable. In the solidification stage, 89.4% of the suspension agent melted, resulting in a relative supercooling degree of 50 °C, which had a certain chilling effect and improved the solidification rate.

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Microstructure evolution and corrosive wear of heat-treated silicon-bearing hypereutectic high-chromium cast iron

Gong,

Chen,

Xing

et al. 2023

J Mater Sci

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Microstructure and properties of Cu-bearing hypereutectic high chromium cast iron

Cited by 9 publications

References 25 publications

Microstructure and properties of hypereutectic high chromium cast iron containing nitrogen

Microstructure and properties of hypereutectic high chromium cast iron containing nitrogen

Study on Simulation of Mold Filling and Solidification Characteristics of Hypereutectic High-Chromium Cast Iron by Lost Foam Suspension Casting

Microstructure evolution and corrosive wear of heat-treated silicon-bearing hypereutectic high-chromium cast iron

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