Correlation between surface-hardness degradation and erosion resistance of carbon steel—Effects of slurry chemistry

2015 ◽  
Vol 83 ◽  
pp. 146-155 ◽  
Author(s):  
B.T. Lu ◽  
J.L. Luo
Keyword(s):  
Carbon Steel ◽  
Erosion Resistance ◽  
Surface Hardness

Relations of Low-Carbon Steel Surface Layer Hardness of Hard Facing and Welding Techniques

2010 ◽  
Vol 34-35 ◽  
pp. 1338-1342
Author(s):  
Zheng Guan Ni
Keyword(s):  
Wear Resistance ◽  
Carbon Steel ◽  
Steel Surface ◽  
Surface Hardness ◽  
Low Carbon Steel ◽  
Surface Electrode ◽  
Low Carbon ◽  
Wear Resistant ◽  
Cladding Layer ◽  
Carbon Steel Surface

through super-hard wear-resistant surface electrode surfacing D707 in Low-carbon steel. We have analysis the effect of welding process parameters and post-weld heat treatment process on low carbon steel surface hardness of cladding layer. The experimental results show that: after quenching hardness value no significant change; But after annealing the hardness value decreased and after annealing the crystal grain of the underlying tissues uniformization become tiny. micro-hardness testing is carried out in the weld cross-section, we have find out that from the base metal to the cladding layer the surface hardness values is getting higher and higher, while the indentation is getting smaller and smaller. Because hardness is a measure of wear resistance materials, thus it can indirectly show that when low-carbon steel surface electrode in the super-hard wear-resistant surfacing welding layer, it can improve the surface hardness of low carbon steel and improve wear resistance of low carbon steel surface.

scholarly journals Mechanical and Tribological Characteristics of Cladded AISI 1045 Carbon Steel

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 859
Author(s):  
Ruslan Karimbaev ◽  
Seimi Choi ◽  
Young-Sik Pyun ◽  
Auezhan Amanov
Keyword(s):  
Surface Roughness ◽  
Carbon Steel ◽  
Surface Hardness ◽  
Xrd Analysis ◽  
Double Layers ◽  
Tribological Characteristics ◽  
X Ray ◽  
Aisi 1045 ◽  
American Society ◽  
Mechanical And Tribological Characteristics

This study introduces a newly developed cladding device, through printing AISI 1045 carbon steel as single and double layers onto American Society for Testing and Materials (ASTM) H13 tool steel plate. In this study, the mechanical and tribological characteristics of single and double layers were experimentally investigated. Both layers were polished first and then subjected to ultrasonic nanocrystal surface modification (UNSM) treatment to improve the mechanical and tribological characteristics. Surface roughness, surface hardness and depth profile measurements, and X-ray diffraction (XRD) analysis of the polished and UNSM-treated layers were carried out. After tribological tests, the wear tracks of both layers were characterized by scanning electron microscopy (SEM) along with energy-dispersive X-ray spectroscopy (EDX). The surface roughness (Ra and Rz) of the single and double UNSM-treated layers was reduced 74.6% and 85.9% compared to those of both the as-received layers, respectively. In addition, the surface hardness of the single and double layers was dramatically increased, by approximately 23.6% and 23.4% after UNSM treatment, respectively. There was no significant reduction in friction coefficient of both the UNSM-treated layers, but the wear resistance of the single and double UNSM-treated layers was enhanced by approximately 9.4% and 19.3% compared to the single and double polished layers, respectively. It can be concluded that UNSM treatment was capable of improving the mechanical and tribological characteristics of both layers. The newly developed cladding device can be used as an alternative additive manufacturing (AM) method, but efforts and upgrades need to progress in order to increase the productivity of the device and also improve the quality of the layers.

Preparation of Cr2O3-Al2O3-Cr Coatings on Carbon Steel by Aluminothermic Process Based on Cr2O3 and Al System

2013 ◽  
Vol 774-776 ◽  
pp. 560-563
Author(s):  
Hong Zhou ◽  
Shou Jun Wu ◽  
Shuang Liu ◽  
Yan Shen ◽  
Bao Shan Yang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Reaction Temperature ◽  
Surface Hardness ◽  
Weight Ratio ◽  
Large Scatter ◽  
Q235 Steel

In the present work, Cr2O3-Al2O3-Cr coatings are prepared on Q235 steel by aluminothermic process based on Cr2O3Al system, using Cr2O3as diluents while a small quantity of Fe2O3to reduce reaction temperature. The results showed that after treated at 650oC for 30minutes, homogenous Cr2O3-Al2O3-Cr coatings can be prepared on Q 235 steel by aluminothermic process with the powders mixture with weight ratio of Cr2O3: Fe2O3: A1 equal to 4: 0.3: 1.12, while coatings prepared by mixture with superfluous aluminum are fragmentary. Surface hardness of the coatings prepared with superfluous Cr2O3is about 23.9GPa while that of the coatings prepared with superfluous Al is about 10.9 GPa and large scatter of 13.7% in hardness.

scholarly journals Pengaruh Media Arang Kayu Bakau Mangrove Dan Arang Kayu Asam Pada Proses Perlakuan Carburizing Terhadap Sifat Mekanik Baja Karbon ST-37

2021 ◽  
Vol 12 (2) ◽  
pp. 30-37
Author(s):  
Rico Arifandi ◽  
Gerald Adityo Pohan
Keyword(s):  
Carbon Steel ◽  
Heating Temperature ◽  
Surface Hardness ◽  
Low Carbon Steel ◽  
Martensite Phase ◽  
Wood Charcoal ◽  
Holding Time ◽  
Low Carbon ◽  
Solid Media ◽  
The Impact

In the military field, tank is armored fighting vehicles that move using chain-shaped wheels. The tread of the tank chain is a component to tread and move so that it requires tougher properties on the surface and has ductile and tough properties on the inside and is more resistant to wear on the surface. The development of tank chain production materials is necessary for the independence of national defense and security as well as reducing dependence on imports. Imported tank chain hardness value 28 HRC or 286 HV. In this research, the objective of this research is to increase the surface hardness of the steel by carburizing the initial material, especially the low carbon steel ST-37. The carburizing treatment process is a method of adding carbon content in steel using solid media. The carbon media used were mangrove charcoal and tamarind wood charcoal using calcium carbonate (CaCO3) catalyst at a constant heating temperature of 900ºC, variations in holding time of 30 minutes, 60 minutes and 90 minutes, cooled rapidly with water media. Then performed an analysis of the effect of the type of wood charcoal on the mechanical properties of carbon steel ST-37. The results obtained will be applied to the tank chain tread production process. The results of the micro structure of martensite and the highest hardness value were found in the holding time of 60 minutes of mangrove charcoal media with the microstructure results of 63.8% martensite, 36.2% bainite and a hardness value of 453.1 HV. The highest toughness value is found in the holding time of 60 minutes of tamarind wood charcoal media with an impact price (HI) of 0.4345 J/mm2. The difference between the impact test results of tamarind charcoal media with mangroves is not too significant. The higher the martensite phase, the higher the hardness value. However, there is also a bainite phase which can increase the toughness of the steel which will be used as a tread chain production material.

Slurry erosion resistance of thermally sprayed Nb2O5 and Nb2O5+WC12Co composite coatings deposited on AISI 1020 carbon steel

2020 ◽  
Vol 46 (17) ◽  
pp. 27670-27678
Author(s):  
Hipólito Carvajal Fals ◽  
Luciano Augusto Lourençato ◽  
Mario Sánchez Orozco ◽  
Maria Julia Xavier Belém ◽  
Carlos Roberto Camello Lima
Keyword(s):  
Carbon Steel ◽  
Erosion Resistance ◽  
Composite Coatings ◽  
Slurry Erosion ◽  
Thermally Sprayed

The effect of boronizing heat treatment on the slurry erosion of AISI 5117

2018 ◽  
Vol 70 (7) ◽  
pp. 1176-1186 ◽  
Author(s):  
Yasser Abdelrhman ◽  
Ahmed Abouel-Kasem ◽  
Karam Emara ◽  
Shemy Ahmed
Keyword(s):  
Erosion Resistance ◽  
Surface Hardness ◽  
Impact Angle ◽  
Impact Factors ◽  
Case Hardening ◽  
Steel Alloy ◽  
Slurry Erosion ◽  
Content Type ◽  
Erosion Mechanism ◽  
Impact Angles

PurposeThis paper aims to clarify the relationship between the slurry erosion and one of the case hardening treatments, i.e. boronizing in this study, for AISI-5117 steel alloy. AISI-5117 steel alloy was used because of its variety applications in the field of submarine equipment. Most of the slurry erosion factors such as velocity, impact angle and mechanism of erosion were studied at different impact angles.Design/methodology/approachAt first, the samples were prepared and subjected to the boronizing treatment in controlled atmosphere. By using a slurry erosion test-rig, all experiments for studying the slurry erosion factors were carried out. Moreover, the studied specimens were investigated via scanning electron microscope, optical microscope and X-ray diffraction to study the erosion mechanism in the different conditions.FindingsIt was expected that the boronization of the AISI-5117 steel would increase its slurry erosion resistance due to its positive impact on the surface hardness. However, the results observed show the opposite, where the boronization of AISI-5117 steel decreased its slurry erosion resistance as implied by the increase of the mass loss percentage at all impact angles.Originality/valueThis research, for the first time, exhibits the effect of boronizing treatment on the slurry erosion in different impact factors accompanied by the erosion mechanism at each impact angle.

scholarly journals Erosion Resistance and Particle Erosion-Induced Tensile Embrittlement of 3D-Selective Laser Melting Inconel 718 Superalloy

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 21 ◽  
Author(s):  
Jun-Ren Zhao ◽  
Fei-Yi Hung ◽  
Truan-Sheng Lui
Keyword(s):  
Selective Laser Melting ◽  
Inconel 718 ◽  
Erosion Resistance ◽  
Surface Hardness ◽  
Particle Erosion ◽  
Laser Melting ◽  
Treatment Processes ◽  
Heat Treated ◽  
Inconel 718 Superalloy ◽  
Impact Angles

We used selective laser melting (SLM) Inconel 718 (coded AS) to carry out three heat treatment processes: (1) double aging (coded A), (2) solid solution + A (coded SA), (3) homogenization + SA (coded HSA) in order to investigate the effects of microstructure changes and tensile strength enhancement on erosion resistance. The as-SLM IN718 and three heat-treated specimens were subjected to clarify the effects of erosion-induced phase transformation on tensile mechanical properties. All heat-treated specimens showed better erosion resistance than as-SLM IN718 did at all impact angles. The as-SLM IN718 and the three heat-treated specimens produced new γ′ phase or metal-oxide via particle erosion, which increased the surface hardness of the material. The thickness of the erosion affected zone is 200 μm, which is the main cause of tensile embrittlement.

Effect of Plastic Deformation on Torsional Fatigue Properties of a Low Carbon Steel

2006 ◽  
Vol 324-325 ◽  
pp. 63-68
Author(s):  
Shinichi Nishida ◽  
Nobusuke Hattori ◽  
Cong Ling Zhou ◽  
Akihiro Uchisako
Keyword(s):  
Plastic Deformation ◽  
Carbon Steel ◽  
Surface Hardness ◽  
Low Carbon Steel ◽  
Fem Analysis ◽  
Axial Direction ◽  
Residual Stress Distribution ◽  
Fatigue Properties ◽  
Low Carbon ◽  
Torsional Fatigue

This paper is aimed to investigate the effect of roller working on the torsional fatigue properties of a typical low carbon steel referring by the resutls of FEM analysis. Three types of specimens had been prepared with plastic deformation value of 0, 0.5 and 1.0mm, respectively. The main results obtained in this study are as follows: (1) The torsional fatigue strength of roller-worked specimen with 1.0mm plastic deformation is increased more than twice of that of non-rollerworked specimens. (2) Surface hardness of roller worked specimen is much higher than that of the non-roller worked one, and compressed and elongated structure is formed at the notch bottom of the specimen. (3) Crack length along the axial direction of roller worked specimens is longer than that of the non-roller worked specimen, and plural cracks initiated and propagated in the roller worked specimens. (4) The residual stress distribution at the specimen’s notch bottom was analysed using FEM analysis and it is verified the same tendency as the experimental results.

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