Automatic Welding, 2023, №12



2023 №12 (01)

DOI of Article 10.37434/as2023.12.02

2023 №12 (03)

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Avtomaticheskaya Svarka (Automatic Welding), #12, 2023, pp. 13-17

Structure of nickel and iron based abrasion-resistant materials

S.V. Maksymova

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Wear-resistant materials containing tungsten carbides are used to improve the performance of various products. This work presents generalized results of investigations on producing wear-resistant layers of abrasion-resistant materials deposited on super hard VK10 material and 30Kh steel. The results of metallographic investigations and local micro-X-Ray spectral analysis to determine the chemical heterogeneity and microstructure of abrasion-resistant materials based on: nickel TeroCoteR 7888 T (Castolin Company); iron Diamax M (Castolin Company; iron – tungsten carbide strip of AN LZ-11-7 grade (Ukraine) in as-delivered condition and after deposition on the base material are given. Chemical composition of individual phases was determined, and it was shown that the main abrasion-resistant phase of these materials (tungsten carbide) is characterized by different morphology and different dimensions. Wear-resistant material of TeroCoteR 7888 T grade (Ni–Cr–Fe–Si) in the form of flexible wire consists (before deposition) of a nickel core, coated by a composite material, containing a large amount of tungsten carbides of a polyhedral shape. The interface of base metal – abrasion-resistant deposited material, which forms during deposition on the base metal, was studied, and it was shown that after deposition the tungsten carbides are chaotically distributed in the nickel matrix, forming a heterogeneous alloy. Ref. 16, Tabl. 4, Fig. 5.
Keywords: microstructure, tungsten carbide, deposited abrasion-resistant material, super hard VK10 material, 30Kh steel


Received: 18.11.2023

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