Influence of Surfactants on the Structure and Wear Resistance of Copper Alloyed Hypereutectoid Steel

Abstract

Influence of modifying with silicocalcium (SiCa) on the structure and friction properties of the hypereutectoid steel alloyed with 8.85 wt. % of Cu was studied. SiCa modifying of the copper alloyed hypereutectoid steel, led to the formation of the vermicular graphite distributed in the indendritic space instead of cementite. Coefficient of friction reduction and increased wear resistance were marked in the copper alloyed hypereutectoid steel due to the presence of graphite and cupric inclusions in the steel structure. The wear resistance of the graphitized hypereutectoid steel alloyed with 8.85 wt. % of Cu was almost 5 times higher compared to the wear resistance of bronze BrA9J3L and 75% higher compared to the wear resistance of antifriction cast iron AChS-1.

The Influence of the Pouring Temperature on the Structure and Properties of Copper Metal Alloys

“…The analysis of the microstructure of tin-base bronzes in different sample sections has shown that the reduction of mechanical characteristics occurs due to increased shrinkage porosity and coarsening of lead impurities in thick sections [5]. At low h values there is significant refinement of dendritic lattice of α-solution, which conditions the increase of mechanical properties [6].…”

Obtaining wear-resistant and score-resistant coatings with iron-based powder laser cladding with copper oxide nano-powder adding

“…This paper presents the results of studying the effect of copper oxide nano-particles in the iron-based charge on the intensity of wear and score resistance of coatings obtained with laser cladding. I ron-based alloys doped with copper can be attributed to anti-friction materials [1][2][3][4][5]. A decrease in the coefficient of friction for lowcarbon steel [1] and cast iron [2] was noted when copper is added.…”

“…The decrease in the friction coefficient depend on the concentration of coppercontaining particles ranging in size from several nanometers to tens of micrometers. Such particles can be formed, both during prolonged isothermal annealing of hardened steel [6][7][8][9] and during crystallization of cast iron-carbon alloys [1][2][3][4].…”

“…An additional factor contributing to the growth of the perlite hardness is the isolation in the ferrite gaps of nano-dimensional particles of the ε-phase. In sliding friction with lubrication, the wear resistance of hypereutectoid steel containing 8.97% copper is by ~23% higher than that of antifriction cast iron АЧС- 1 С плавы на основе железа, легированные медью, можно отнести к антифрикционным материалам [1][2][3][4][5], Отмечено уменьшение коэффициента трения для низкоуглеродистой стали [1] и чугуна [2] при введении в их состав меди. На снижение коэффициента трения оказывает влияние концентрация медьсодержащих частиц размером от нескольких нанометров до десятков микрометров.…”

“…На снижение коэффициента трения оказывает влияние концентрация медьсодержащих частиц размером от нескольких нанометров до десятков микрометров. Такие частицы могут быть сформированы как при длительных изотермических отжигах закаленной стали [6][7][8][9], так и в процессе кристаллизации литых железоуглеродистых сплавов [1][2][3][4].…”