scholarly journals Wear Behavior of Austempered and Quenched and Tempered Gray Cast Irons under Similar Hardness

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1329 ◽  
Author(s):  
Bingxu Wang ◽  
Xue Han ◽  
Gary C. Barber ◽  
Yuming Pan
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Wear Behavior ◽  
Gray Cast ◽  
Fatigue Wear ◽  
Hardness Tester ◽  
The Matrix ◽  
Austempering Temperature ◽  
Wear Tests

In this research, an austempering heat treatment was applied on gray cast iron using various austempering temperatures ranging from 232 °C to 371 °C and holding times ranging from 1 min to 120 min. The microstructure and hardness were examined using optical microscopy and a Rockwell hardness tester. Rotational ball-on-disk sliding wear tests were carried out to investigate the wear behavior of austempered gray cast iron samples and to compare with conventional quenched and tempered gray cast iron samples under equivalent hardness. For the austempered samples, it was found that acicular ferrite and carbon saturated austenite were formed in the matrix. The ferritic platelets became coarse when increasing the austempering temperature or extending the holding time. Hardness decreased due to a decreasing amount of martensite in the matrix. In wear tests, austempered gray cast iron samples showed slightly higher wear resistance than quenched and tempered samples under similar hardness while using the austempering temperatures of 232 °C, 260 °C, 288 °C, and 316 °C and distinctly better wear resistance while using the austempering temperatures of 343 °C and 371 °C. After analyzing the worn surface, abrasive wear and fatigue wear with the presence of pits, spalls, voids, long cracks, and wear debris were the main mechanisms for austempered gray cast iron with a low austempering temperature. However, only small pits and short cracks were observed on the wear track of austempered gray cast iron with high austempering temperature. Furthermore, the graphite flakes were exposed and ground by the counterpart surface during wear tests. Then, the graphite particles would form a tribo-layer to protect the contact surface.

Metallic reinforcements role on aluminum silicon composites wear behavior

2016 ◽  
Vol 51 (19) ◽  
pp. 2805-2812 ◽  
Author(s):  
G Miranda ◽  
M Buciumeanu ◽  
MM Costa ◽  
F Bartolomeu ◽  
FS Silva ◽  
...  
Keyword(s):  
Cast Iron ◽  
Gray Cast Iron ◽  
Wear Behavior ◽  
Microstructural Characterization ◽  
Gray Cast ◽  
Wear Performance ◽  
Particulate Reinforced Composites ◽  
Particulate Reinforced ◽  
Wear Tests ◽  
Aluminum Silicon

This study is concerned with the influence of four metallic reinforcements on aluminum-silicon (AlSi) composites, with respect to wear behavior. AlSi-Ti; AlSi-Ti6Al4V; AlSi-1.4301 stainless steel and AlSi-Ni particulate reinforced composites were produced by a hot-pressing route. Microstructural characterization showed a uniform distribution of the reinforcing particles in the AlSi matrix. Reciprocating pin-on-plate wear tests were performed for AlSi and AlSi-based composites against gray cast iron plates. In order to compare the effect of different metallic particulates on the AlSi-based composites/gray cast iron tribopair wear performance, besides the pin, the counterface was also analyzed. The particle/matrix interface is analyzed in order to understand its influence on the tribopair behavior and on the controlling wear mechanisms. It was shown that the better compromise between both sliding surfaces performance was attained by AlSi-Ni/gray cast iron tribopair.

Influence of Orientations of Bionic Unit Fabricated by Laser Remelting on Fatigue Wear Resistance of Gray Cast Iron

2015 ◽  
Vol 24 (6) ◽  
pp. 2511-2520 ◽  
Author(s):  
Zhi-Kai Chen ◽  
Ti Zhou ◽  
Hai-feng Zhang ◽  
Wan-shi Yang ◽  
Hong Zhou
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Laser Remelting ◽  
Fatigue Wear

Improved fatigue wear resistance of gray cast iron by localized laser carburizing

2015 ◽  
Vol 644 ◽  
pp. 1-9 ◽  
Author(s):  
Zhi-kai Chen ◽  
Ti Zhou ◽  
Ruo-yu Zhao ◽  
Hai-feng Zhang ◽  
Shu-chao Lu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Fatigue Wear

Effect of the Morphology, Size, Distribution and Homogeneity of Carbides and Matrix on Wear Resistance in High Cr-Alloys White Cast Iron

2021 ◽  
Vol 1016 ◽  
pp. 56-62
Author(s):  
Carlos Camurri ◽  
Jasmín Maril ◽  
Eric Romero
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
White Cast Iron ◽  
Wear Behavior ◽  
Hardness Test ◽  
Mining Equipment ◽  
Cast Irons ◽  
Loss Of Mass ◽  
Ultimate Purpose ◽  
Wear Tests

The aim of this work was to study the wear behavior of high-chromium white cast iron of families ASTM A-532 II (B, D) and III A, used in mining equipment, in order to establish relationships between the wear resistance, hardness and microstructure of the alloys, with the ultimate purpose of predicting their resistance to abrasion. Samples from these cast irons were subjected to mechanical wear tests by rotating drum, then their micro/macro hardness was measured and microstructure analyzed by optical and scanning electron microscopy .It was found that when the macroscopic hardness differences were significant there was a strong correlation between the hardness and the loss of mass due to abrasion-impact wear. By contrast, when the alloys had similar hardness, the wear resistance was determined by morphology, size, and the distribution and connectivity of carbides and matrix and therefore was not predictable by an only simple hardness test.

Experimental Methods for NiCrBSi-WC Cladding on Gray Cast Iron Trim Cutter Die

2015 ◽  
Vol 761 ◽  
pp. 298-302
Author(s):  
N.I.S. Hussein ◽  
S.R. Kamarul ◽  
Mohamad Nizam Ayof
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Rejection Rate ◽  
Cutting Edge ◽  
Gray Cast ◽  
Filler Material ◽  
Burr Formation ◽  
Resistant Material ◽  
Wear Resistant

The wear on the cutting edge of the gray cast iron trim cutter die will result in the burr formation on the trimmed blanks. This will increase the rejection rate, and hence, decreasing the efficiency of the production. By applying a wear resistant material, the wear rate on the cutting edge of the die is believed to be minimized. In this paper, the methodology of the experiment on the cladding process using gas metal arc as the heat source, and NiCrBSi-WC as the filler material on gray cast iron substrate is presented. NiCrBSi-WC is chosen as the filler material because of its outstanding wear resistance characteristic. Furthermore, it is a popular choice as a wear resistant material in various types of industry. The purpose of the planned experiment is to maximize the wear resistance of the trim cutting die. It is also a fraction of the case study based on the parts production in the automotive industry in Malaysia.

scholarly journals Wear behavior of composite strengthened gray cast iron by austempering and laser hardening treatment

2020 ◽  
Vol 9 (2) ◽  
pp. 2037-2043 ◽  
Author(s):  
Bingxu Wang ◽  
Yuming Pan ◽  
Yu Liu ◽  
Gary C. Barber ◽  
Feng Qiu ◽  
...  
Keyword(s):  
Cast Iron ◽  
Gray Cast Iron ◽  
Wear Behavior ◽  
Laser Hardening ◽  
Gray Cast ◽  
Hardening Treatment

Friction and wear behavior of TaC ceramic layer formed in-situ on the gray cast iron

2019 ◽  
Vol 135 ◽  
pp. 181-188 ◽  
Author(s):  
Nana Zhao ◽  
Yurong Zhao ◽  
Yiqi Wei ◽  
Xin Wang ◽  
Jie Li ◽  
...  
Keyword(s):  
Cast Iron ◽  
Friction And Wear ◽  
Gray Cast Iron ◽  
Wear Behavior ◽  
Ceramic Layer ◽  
Gray Cast ◽  
Friction And Wear Behavior

Friction and Wear Behavior of 9SiCr Steel under Different Treatment with Plant Abrasive

2012 ◽  
Vol 562-564 ◽  
pp. 318-321 ◽  
Author(s):  
Xiao Peng Huang ◽  
Jing Feng Wu ◽  
Fang Xin Wan ◽  
Ke Ping Zhang
Keyword(s):  
Wear Resistance ◽  
Wear Behavior ◽  
Fatigue Wear ◽  
Wear Rates ◽  
Laser Quenching ◽  
Wear Damage ◽  
Worn Surface ◽  
Sliding Distance ◽  
Wear Tests ◽  
Temperature Sample

In this study, the wear behavior of 9SiCr steel under different treatment with plant abrasive was evaluated by using an abrasive rubber wheel tester. The samples’ microstructures were analyzed by a metallurgical microscope, the samples’ worn surface morphology was observed by using SEM.The results show that: With the increasing of hardness of sample, Its wear resistance is greatly improved. Hardness of laser quenching sample is the highest, wear resistance of it is the best, the second is sub temperature sample. The wear rates and the wear coefficients are proportional to the sliding distance. The Laser quenching samplel display a consistent behaviour with a very low wear rate and a small increase of the wear damage is observed during the abrasive wear tests. The worn surfaces of the three kind samples are characterized by the micro-cutting wear, and no treatment sample is accompanied by fatigue wear mechanism.

Microstructure and tribological properties of gray cast iron specimens coated by aluminizing, boronizing, chromizing and siliconizing

2012 ◽  
Vol 1516 ◽  
pp. 115-120 ◽  
Author(s):  
T. Murakami ◽  
K. Matsuzaki ◽  
Y. Gomi ◽  
S. Sasaki ◽  
H. Inui
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Tribological Properties ◽  
Gray Cast Iron ◽  
Steel Ball ◽  
Gray Cast ◽  
Iron Plate ◽  
Aisi 52100 ◽  
Alpha Olefin ◽  
Aisi 52100 Steel

ABSTRACTIn this study, aluminized, boronized, chromized and siliconized gray cast iron plate specimens were prepared, and their microstructures and tribological properties were investigated. The surfaces of the aluminized, boronized, chromized and siliconized specimens mainly consisted of FeAl, Fe2B, (Cr, Fe)23C6 and FeSi phases, respectively. Also, the surface of the boronized specimen exhibited the highest microvickers hardness of all the specimens. The aluminized, boronized and chromized specimens exhibited friction coefficients as low as the non-coated specimens when sliding against AISI 52100 steel ball specimens in poly-alpha-olefin. In addition, the boronized and chromized specimens exhibited much higher wear resistance than the non-coated specimens.

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