Comparative Analysis of the Influence of Chemical Composition and Microstructure on the Abrasive Wear of High-Strength Steels

Abstract

The paper discusses the microstructural, chemical and tribological properties of the selected low-alloy, high-strength martensitic boron steels with a hardness of 500–600 HBW. These materials, due to their increased strength, and thus resistance to abrasive wear, are widely used in the mining, agricultural or building industries. Grades such as XAR, TBL and Creusabro were subjected to a comparative analysis. As a result of the conducted research, an attempt was made to determine the relation between the microstructural properties, chemical composition, hardness and abrasive wear resistance of the above-mentioned metallic materials belonging to the same material group. The scope of work involved a metallographic analysis, including the examination of the microstructure with an analysis of the prior austenite grain size. Tribological tests were carried out with the use of a T-07 tester, which is designed for testing abrasive wear resistance in the presence of a loose abrasive. As a result, it was found that the coefficient of relative abrasion resistance kbAV in relation to as-normalized C45 steel is equal to 0.9–1.25 and may even have the same value among materials of different hardness in the as-delivered state.

Analysis of Wear Properties of Hardox Steels in Different Soil Conditions

“…Similar conclusions were also reached in other studies [ 14 , 38 ]. Based on [ 39 ], it can be hypothesized that the largest grain size of the former austenite of 38 GSA steel has an effect on its similar wear indices compared with the less resistant steels TBL PLUS and Creusabro 4800 or with the XAR 600 steel of similar hardness. The carbon content is the highest for 38 GSA steel, and the character of wear itself shows the least favorable character in the form of irregularly arranged grooves and greater portions cut out of the material.…”

Ballistic Impacts with Bullet Splash—Load History Estimation for .308 Bullets vs. Hard Steel Targets

“…The targets were fabricated using high-yield stress structural steel plates. The two steel grades selected for the experimentation go under the trade names of Creusabro ® 8000 [13][14][15] and Durostat ® 400 [16]. They are characterised by a combination of very high tensile strength and optimum wear resistance.…”

“…The significant amount of chromium and molybdenum guarantees the hardenability necessary to form a mixed martensite and bainite structure. Both steel grades are characterised by micrometric carbides finely dispersed in the metal and further improving abrasive wear resistance [14].…”

Field and Laboratory Wear Tests of Machine Components Used for Renovation of Dirt Roads—A Case Study

“…Abrasion wear is also found in machine components working in the ground [ 6 , 7 , 8 ]. Due to the interaction of the abrasive mass and the elements in it (such as stones), there is a change in the shape-dimensional properties leading to damage to the component and the need to replace it with a new one [ 9 , 10 ].…”