Wear Resistance Mechanism of ZTAP/HCCI Composites with a Honeycomb Structure

The abrasive wear resistance of zirconia toughened alumina (ZTA) ceramic particle reinforced high chromium cast iron (HCCI) composites has been systematically investigated using a moving wedge type of apparatus. The results of three-body abrasive wear show that the wear resistance of the composites with honeycomb is three times higher than that of the high chromium cast iron. The wear resistance of the composites with a honeycomb structure is close to that of the layer structure and is higher than that of the HCCI because the honeycomb wall in the cell honeycomb structure is prominent and because the honeycomb core is depressed. The wear mechanisms of the composites are mainly microcutting and fatigue fractures. The honeycomb structure forms a “macrocosmic shadow protection effect” and a “microcosmic shadow protection effect” to protect each composite and to improve the wear resistance of the composites.

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

Periodica Polytechnica Chemical Engineering ◽

10.3311/ppch.15802 ◽

2020 ◽

Author(s):

Liyang Xiao ◽

Pingan Xiao ◽

Liviu Brândușan ◽

Jinghong Gu ◽

Zhongtao Li ◽

...

Keyword(s):

Mechanical Properties ◽

Wear Resistance ◽

Cast Iron ◽

Impact Toughness ◽

Abrasive Wear ◽

Bending Strength ◽

Sintering Temperature ◽

High Chromium ◽

High Chromium Cast Iron ◽

Chromium Cast Iron

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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Microstructure and Wear Resistance of WC and High Chromium Cast Iron Hardfacing Layers

Coatings ◽

10.3390/coatings10090852 ◽

2020 ◽

Vol 10 (9) ◽

pp. 852

Author(s):

Runnan Jia ◽

Shenglin Liu ◽

Zhichao Luo ◽

Jiapei Ning ◽

Haiyan Wang ◽

...

Keyword(s):

Wear Resistance ◽

Cast Iron ◽

High Temperature ◽

Abrasive Wear ◽

Low Carbon Steel ◽

Low Carbon ◽

High Chromium ◽

Wear Process ◽

High Chromium Cast Iron ◽

Chromium Cast Iron

The WC and high chromium cast iron (HCCI) welded layers were prepared on Q235 low carbon steel by hardfacing technique in order to improve high-temperature performance. The microstructure and mechanical properties of the welded layer were investigated. It was found that Fe3W3C is the major strengthening phase of the WC welded layer. Furthermore, a high-temperature three-body abrasive wear experiment was designed and conducted on the welded layers. The results show that the wear resistance of the WC welded layer was much better than that of the HCCI welded layer at both room and high temperatures. During the high-temperature abrasive wear process, the Fe3W3C phase can effectively strengthen the matrix and hence, contribute to improved wear resistance.

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The influence of retained austenite in high chromium cast iron on impact-abrasive wear

Wear ◽

10.1016/0043-1648(90)90026-7 ◽

1990 ◽

Vol 135 (2) ◽

pp. 217-226 ◽

Cited By ~ 22

Author(s):

Tong Jian-Min ◽

Zhou Yi-Zhong ◽

Shen Tian-Yi ◽

Deng Hai-Jin

Keyword(s):

Cast Iron ◽

Abrasive Wear ◽

Retained Austenite ◽

High Chromium ◽

High Chromium Cast Iron ◽

Chromium Cast Iron

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Wear Resistance of Nano TiN Strengthen High Chromium Cast Iron

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.217-219.2410 ◽

2012 ◽

Vol 217-219 ◽

pp. 2410-2413 ◽

Cited By ~ 1

Author(s):

Xing Hai Shao ◽

Jing Pei Xie ◽

Wen Yan Wang ◽

Yan Li ◽

Pin Gan Zhou ◽

...

Keyword(s):

Grain Size ◽

Wear Resistance ◽

Cast Iron ◽

Alloy Layer ◽

Chromium Alloy ◽

High Chromium ◽

High Chromium Cast Iron ◽

Carbon Ferrochrome ◽

Micro Analysis ◽

Chromium Cast Iron

The effects and the mechanisms of namo TiN on the high chromium cast iron are studied, the material has been prepared through infiltration casting and addition of high carbon ferrochrome powder and nano TiN powder. The alloy is formed on the surfaced of guide plate, and the wear resistance of alloy have been studied by means of SEM, XRD micro-analysis and wear-resistant performance. The grain size and the type of carbide in the organization are affected by nano TiN, and the wear resistance of carbon chromium alloy layer is affected by the type of carbide; when the addition of nano TiN is 1% (wt), the grain size is apparently refined, overeutectic primary M7C3 in the hypereutectic is precipitated uniformly in considerable amounts, therefore the wear resistance of alloy can be improved effectively.

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Effect of boronizing temperature and time on microstructure and abrasion wear resistance of Cr12Mn2V2 high chromium cast iron

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2008.06.170 ◽

2008 ◽

Vol 202 (24) ◽

pp. 5882-5886 ◽

Cited By ~ 30

Author(s):

Chunmin Li ◽

Baoluo Shen ◽

Guijiang Li ◽

Chao Yang

Keyword(s):

Wear Resistance ◽

Cast Iron ◽

High Chromium ◽

High Chromium Cast Iron ◽

Abrasion Wear ◽

Chromium Cast Iron

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Effects of titanium addition on microstructure and wear resistance of hypereutectic high chromium cast iron Fe–25wt.%Cr–4wt.%C

Wear ◽

10.1016/j.wear.2008.12.061 ◽

2009 ◽

Vol 267 (1-4) ◽

pp. 356-361 ◽

Cited By ~ 64

Author(s):

R.J. Chung ◽

X. Tang ◽

D.Y. Li ◽

B. Hinckley ◽

K. Dolman

Keyword(s):

Wear Resistance ◽

Cast Iron ◽

Titanium Addition ◽

High Chromium ◽

High Chromium Cast Iron ◽

Chromium Cast Iron

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Microstructure and Corrosive Wear Property of Super High Chromium Cast Iron (SHCCI)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.228-229.905 ◽

2011 ◽

Vol 228-229 ◽

pp. 905-908

Author(s):

Liu Jie Xu ◽

Shi Zhong Wei ◽

Ji Wen Li ◽

Guo Shang Zhang ◽

Xiang Dong Ma

Keyword(s):

Wear Resistance ◽

Cast Iron ◽

Carbon Content ◽

Corrosive Wear ◽

Wear Property ◽

High Chromium ◽

High Chromium Cast Iron ◽

Relative Wear ◽

Relative Wear Resistance ◽

Chromium Cast Iron

To increase the wear resistance of components in slurry pump suffering from serious corrosive abrasion, new super high chromium cast iron (SHCCI) which contains 37wt.% chromium approximately and different carbon content were developed based on the high chromium cast iron with 26wt.% Cr (Cr26). The microstructure of SHCCI was investigated by SEM and XRD. The hardness and impact toughness of SHCCI was tested, and the corrosive wear property of SHCCI was also researched using MCF-30 type erosion abrasion tester under H3PO4 medium condition. The results show that the microstructure of SHCCI is composed of carbide of M7C3+M23C6, martensite and retained austenite. With the increase of carbon content, the hardness of SHCCI first increases and then decreases, the toughness increases, and the corrosive wear property decreases. The relative wear resistance of SHCCI is obviously superior to that of Cr26 cast iron, and the maximal relative wear resistance of SHCCI is three times higher than that of Cr26 cast iron.

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