Effect of the Process of Production of Functional Gradient Layered Steel–Aluminum Compositions on Their Structure and Properties

Investigation of the structure and properties of aluminum-matrix composite coatings for tribotechnical purposes formed on steel substrates

“…The layers are preliminarily applied to the steel by different methods [15][16][17]. Previous work has shown the promise of using pure aluminum as an intermediate layer formed by the explosion welding process [17][18][19]. At the same time, the process of arc surfacing in protective gases (e.g.…”

“…Composite coatings were obtained by the argon-arc surfacing process on plates of high-quality steel 20 (GOST 1050) with dimensions of 300x150x15 mm. An intermediate layer with a thickness of 5 mm made of aluminum grade AD1 (GOST 4784) was applied to their surface by a preliminary explosion welding process, the parameters of which are given in [18].…”

“…As it was established earlier, it is important for obtaining high-quality steel-aluminum compositions to ensure partial penetration of the intermediate layer, i.e. no contact of the melt with solid steel [18]. Therefore, the following basic argon-arc surfacing process modes were chosen: welding current -120-160 A, arc voltage -18-20 V, surfacing speed -11-13 m/h.…”

“…The adhesion strength of the deposited coatings was determined during pull-off and shear tests according to the schemes used for bimetallic materials of friction units [18].…”