scholarly journals The Abrasive Wear Resistance of Coatings Manufactured on High-Strength Low-Alloy (HSLA) Offshore Steel in Wet Welding Conditions

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 219 ◽  
Author(s):  
Jacek Tomków ◽  
Artur Czupryński ◽  
Dariusz Fydrych
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Water Environment ◽  
High Strength ◽  
Abrasive Wear Resistance ◽  
Filler Materials ◽  
Offshore Structure ◽  
Underwater Welding ◽  
Covered Electrodes

Some marine and offshore structure elements exploited in the water cannot be brought to the surface of the water as this will generate high costs, and for this reason, they require in-situ repairs. One of the repair techniques used in underwater pad welding conditions is a wet welding method. This paper presents an investigation of the abrasive wear resistance of coatings made in wet welding conditions with the use of two grades of covered electrodes—an electrode for underwater welding and a commercial general use electrode. Both electrodes were also used for manufacturing coatings in the air, which has been also tested. The Vickers HV10 hardness measurements are performed to demonstrate the correlation in abrasive wear resistance and the hardness of each specimen. The microscopic testing was performed. For both filler materials, the coatings prepared in a water environment are characterized by higher resistance to metal–mineral abrasion than coatings prepared in an air environment—0.61 vs. 0.44 for commercial usage electrode and 0.67 vs. 0.60 for underwater welding. We also proved that in the water, the abrasive wear was greater for specimens welded by the general use electrode, which results in a higher hardness of the layer surface. In the air welding conditions, the layer welded by the electrode for use in the water was characterized by a lower hardness and higher resistance to metal–mineral abrasion. The microstructure of the prepared layers is different for both the environment and both electrodes, which results in abrasive wear resistance.

Effects of TiB2/TiCxratios on compression properties and abrasive wear resistance of in situ 50 vol.-% (TiB2–TiCx)/Al–Cu composites

2017 ◽  
Vol 61 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Lei Wang ◽  
Feng Qiu ◽  
Delong Yang ◽  
Jingyuan Liu ◽  
Fang Chang ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Abrasive Wear Resistance ◽  
Compression Properties

The Effect of Processes Parameters on the Abrasive Wear Resistance of Boronized AISI 1050 Steel

2016 ◽  
Author(s):  
Mete Han Boztepe ◽  
Melih Bayramoglu
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Mesh Size ◽  
High Hardness ◽  
High Strength ◽  
Constant Load ◽  
Abrasive Wear Resistance ◽  
Wear Testing ◽  
Wear Properties ◽  
Pin On Disk

Boronizing is one of the thermochemical surface treatment processes which is extensively used to obtain excellent mechanical properties such as high strength, very high hardness, good toughness and fracture toughness. In this study, AISI 1050 steel specimens have been subjected to pack boronizing process by using Ekabor 2 powder within the stainless steel seal container. The experiments were carried out at temperatures of 800 °C, 850 °C and 900 °C for 3, 6 and 9 hours to investigate the effect of these parameters on the wear resistance of boronized specimens. Pin-on-Disk wear testing is used to characterize wear properties of boronized specimens. Wear tests were performed at dry conditions under constant load of 30 N by using 220 mesh size Al2O3 abrasive paper. Different rotating speeds of the pin-on disk were selected as 300, 600, 900, 1200, 1500 revolutions for each of the test specimens. After the abrasive tests, weight losses of the specimens were measured to determine the abrasive wear resistance of boronized specimens. The results were also compared with unboronized and conventional hardened AISI 1050 steel specimens respectively.

scholarly journals Effect of tempering on the impact-abrasive and abrasive wear resistance of ultra-high strength steels

Wear ◽  
2019 ◽  
Vol 440-441 ◽  
pp. 203098 ◽  
Author(s):  
Oskari Haiko ◽  
Kati Valtonen ◽  
Antti Kaijalainen ◽  
Sampo Uusikallio ◽  
Jaakko Hannula ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
High Strength Steels ◽  
High Strength ◽  
Abrasive Wear Resistance ◽  
Ultra High Strength Steels ◽  
The Impact

scholarly journals Effects of Carbon Source on TiC Particles’ Distribution, Tensile, and Abrasive Wear Properties of In Situ TiC/Al-Cu Nanocomposites Prepared in the Al-Ti-C System

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 610 ◽  
Author(s):  
Yu-Yang Gao ◽  
Feng Qiu ◽  
Tian-Shu Liu ◽  
Jian-Ge Chu ◽  
Qing-Long Zhao ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Wear Resistance ◽  
Carbon Source ◽  
Abrasive Wear ◽  
Carbon Sources ◽  
Abrasive Wear Resistance ◽  
Wear Properties ◽  
In Situ Tic ◽  
Hybrid Carbon

The in situ TiC/Al-Cu nanocomposites were fabricated in the Al-Ti-C reaction systems with various carbon sources by the combined method of combustion synthesis, hot pressing, and hot extrusion. The carbon sources used in this paper were the pure C black, hybrid carbon source (50 wt.% C black + 50 wt.% CNTs) and pure CNTs. The average sizes of nano-TiC particles range from 67 nm to 239 nm. The TiC/Al-Cu nanocomposites fabricated by the hybrid carbon source showed more homogenously distributed nano-TiC particles, higher tensile strength and hardness, and better abrasive wear resistance than those of the nanocomposites fabricated by pure C black and pure CNTs. As the nano-TiC particles content increased, the tensile strength, hardness, and the abrasive wear resistance of the nanocomposites increased. The 30 vol.% TiC/Al-Cu nanocomposite fabricated by the hybrid carbon source showed the highest yield strength (531 MPa), tensile strength (656 MPa), hardness (331.2 HV), and the best abrasive wear resistance.

Abrasive wear resistance of high-strength alloy steels

1984 ◽  
Vol 26 (11) ◽  
pp. 835-838
Author(s):  
G. M. Sorokin ◽  
S. N. Bobrov ◽  
N. I. Shumovskii
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
High Strength ◽  
Abrasive Wear Resistance ◽  
Alloy Steels ◽  
Strength Alloy

STRUCTURAL PROPERTIES AND ABRASIVE- WEAR RESISTANCE OF BRINAR 400 AND BRINAR 500 STEELS

Tribologia ◽  
2017 ◽  
Vol 273 (3) ◽  
pp. 67-75 ◽  
Author(s):  
Łukasz KONAT ◽  
Jerzy NAPIÓRKOWSKI ◽  
Beata BIAŁOBRZESKA
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Sandy Loam ◽  
High Strength ◽  
Abrasive Wear Resistance ◽  
Martensitic Steels ◽  
Fine Grained ◽  
Carbide Phases ◽  
Fine Grained Structure ◽  
Steel Grades

In the paper, microstructures and the examination results of abrasive-wear resistance of steel grades Brinar 400 and Brinar 500 are presented. It was found on the grounds of light and electron scanning microscopy that these steels are characterised by subtle differences in microstructures, influencing their mechanical and usable properties. In as-delivered condition, the steels have fine-grained structure with post-martensitic orientation, containing few particles of carbide phases. Such microstructures of Brinar steels and the performed chemical analyses indicate that their properties are formed during specialised operations of thermo-mechanical rolling. Generally, it can be said that the examined steels were designed according to the accepted standards of material engineering, related to low-alloy, high-strength, and abrasive-wear resistant martensitic steels. According to the above, the obtained results of structural examinations of Brinar 400 and Brinar 500 steels were referred to real abrasive-wear indices obtained by the spinning bowl method with use of various abrasive soil masses. The tests carried-out in light soil (loamy sand), medium soil (sandy loam), and in heavy soil (loam), as well as hardness measurements showed strict dependence of abrasive-wear indices on microstructures and the heattreatment condition of the examined steels. Examination results of abrasive-wear resistance of Brinar steels were compared with those of steel 38GSA in normalised conditions.

scholarly journals Effect of microstructure factors on abrasion resistance of high-strength steels

2014 ◽  
Vol 60 (No. 3) ◽  
pp. 115-120 ◽  
Author(s):  
E. ZDRAVECKÁ ◽  
J. TKÁČOVÁ ◽  
M. ONDÁČ
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Abrasion Resistance ◽  
High Strength Steels ◽  
Wear Test ◽  
High Hardness ◽  
High Strength ◽  
Abrasive Wear Resistance ◽  
And Performance ◽  
Three Body

Current development of high strength abrasion resistant steels is mostly oriented on high hardness, martensitic concept following the hypothesis that the abrasion resistance holds a proportional tendency with hardness. The various experimental observations have suggested that the high hardness of martenzite does not guarantee a high abrasion resistance because the brittle nature of martensite can lead to decrease their abrasive wear. The aim of this work was to analyse the influence of microstructure on abrasion resistance of selected high-strength low-alloyed steels used in the industry. The abrasive wear resistance of selected steels was obtained using an ASTM-G65 three-body abrasive wear test, microstructure and wear resistance determination. It was observed that grain refinement is an effective way of enhancing the abrasion resistance. In this context, micro alloyed steels offer an attractive combination of price and performance.

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