Microstructure, Mechanical and Abrasive Wear Behavior of 8.0 wt pct Cr White Iron Subjected to Continuous and Cyclic Annealing Treatment

Mandal, Siddhartha Sankar; Ghosh, K. S.; Mondal, Dipak Kumar

doi:10.1007/s11661-017-4101-2

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…For the production of the working surface the complex alloyed white cast irons are most widely used with the following chemical composition [2][3][4][5][6][7][8][9][10][11][12] (wt.%): С = 1.6-3.4%; Si = 0.2-1.0%; Mn = 0.5-5.2%; Cr = 11.0-30.0%; Mo = 0.5-2.5%; S ≤ 0.08%; P ≤ 0.1%; Cu ≤ 1.5%; V ≤ 0.35%; Ti ≤ 0.35%. Such irons are characterized with high hardness and wear resistance but have low toughness [8; 9].…”

Section: Introductionmentioning

confidence: 99%

Influence of technological factors on formation process of bimetallic castings

Aftandiliants

Gnyloskurenko

Meniailo

et al. 2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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The analysis of the modern state of wear-resistant metallic material production showed that one of the promising directions for improving their quality is the use of bimetallic steel-cast iron castings, which have a complex of properties differentiated over the volume and surface of the products. However, the problem of obtaining a high-quality joint of the steel base and the working cast iron layers is not completely solved at present. So, the research aims to determine the quality criterion of a good diffusion joint and to study the selected technological factor influence on the formation process of bimetallic castings using the developed mathematical model. The paper examines the effect of the steel base temperature at liquid cast iron pouring over it, the temperature of pouring cast iron, as well as the ratio of liquid cast iron mass to the unit surface of the steel base on the contact surface temperature as selected quality criteria, and the structure of the transition diffusion layer of bimetallic castings. It was determined that a high-quality joint is realized when this temperature is larger than the solidus temperature of the cast iron. Moreover, the results of the mathematical model application showed maximum contribution of the liquid cast iron mass/steel unit surface ratio, less effect of the pouring iron temperature and minimum influence of the solidified steel base temperature onto the quality criteria. The metallographic analysis established the diffusion joint formation in the transition steel-cast iron layer consisting of pearlite on the side of the steel base and without the carbide matrix area on the side of the working iron layer. The results obtained are of great importance for the designing bimetallic machine parts worked under intensive wear conditions.

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Section: Introductionmentioning

confidence: 99%

Influence of technological factors on formation process of bimetallic castings

Aftandiliants

Gnyloskurenko

Meniailo

et al. 2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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“…The focus of research is reducing material wear rate [2]. Some techniques have been adopted to further enhance HCCI's mechanical properties and expand its application range, such as alloying [3][4][5][6][7][8][9][10][11][12][13], modification treatment [14,15] and heat treatment [3,[16][17][18][19][20][21]. These techniques can strengthen HCCI's matrix, optimize its microstructure, and adjust M 7 C 3 type carbide's size and morphology.…”

Section: Introductionmentioning

confidence: 99%

Sintering Preparation of 15 wt% Cr Cast Iron as well as Its Mechanical Properties and Impact Abrasive Wear

Xiao

Brânduşan

et al. 2020

Period. Polytech. Chem. Eng.

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15 wt% Cr sintered High Chromium Cast Iron (HCCI) with full density was successfully prepared by Super-solidus Liquid Phase Sintering (SPLS) technique, with water atomized 15 wt% Cr high chromium cast iron powder as initial materials. Its densification behavior and microstructure evolution in SPLS process and mechanical properties were investigated systematically. Additionally, the impact abrasive wear resistance under different impact energies were also analyzed and compared with another sintered HCCI with 20 wt% Cr. The results indicated that sintering temperature has a strong influence on the sintered alloy’s density, hardness, impact toughness and bending strength. The M7C3 type (M is Cr and Fe) carbides were obviously coarsened as temperature increased and their rod-shaped branches were fully developed at the same time, thereby resulting in carbide network formation in the matrix. The reasonable sintering temperature range was 1195–1205 °C, and the optimum mechanical properties had the hardness of 63.9 HRC, bending strength of 2112.65 MPa and impact toughness of 7.92 J/cm2. What is more important impact abrasive wear test results indicated 15 wt% Cr sintered HCCI’s wear resistance could be comparable to 20 wt% Cr sintered HCCI under impact energy 1~3 J/cm2, and it is more cost effective.

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Effect of Cyclic Annealing on the Grain Size of Low-Carbon Steel: An Image-Processing Approach

Gajalakshmi¹,

Saravanan

2021

Springer Proceedings in Materials

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Microstructure, Mechanical and Abrasive Wear Behavior of 8.0 wt pct Cr White Iron Subjected to Continuous and Cyclic Annealing Treatment

Cited by 5 publications

References 35 publications

Influence of technological factors on formation process of bimetallic castings

Influence of technological factors on formation process of bimetallic castings

Sintering Preparation of 15 wt% Cr Cast Iron as well as Its Mechanical Properties and Impact Abrasive Wear

Effect of Cyclic Annealing on the Grain Size of Low-Carbon Steel: An Image-Processing Approach

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