The structure and heat resistance of the surface layers formed by depositing powder mixtures of boron, chromium and tungsten onto corrosion-resistant steel

The structure and heat resistance of the surface layers formed by depositing powder mixtures of boron, chromium and tungsten onto corrosion-resistant steel Full article

Journal

Metallurgist
ISSN: 0026-0894

Output data

Year: 2026, Pages: 105–110 Pages count : DOI: 10.1007/s11015-025-02070-8

Tags

Non-vacuum electron beam surfacing, Tungsten borides, Chromium/iron borides, Heat resistance

Authors

E. A. Pukhova ¹ , P. M. Petukhova ¹ , V. E. Andryushkina ¹ , V. A. Bataev ¹ , Yu. N. Malyutina ^2,1 , E. V. Domarov ³

Affiliations

1	Novosibirsk State Technical University (NSTU), Novosibirsk, Russian Federation
2	Lavrentiev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences (SB RAS), Novosibirsk, Russian Federation
3	Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences (SB RAS), Novosibirsk, Russian Federation

Surface layers having a thickness of ~ 2 mm, alloyed with tungsten, chromium, and boron, were formed on the samples of steel 12Kh18N9T (0.12C–18Cr–9Ni–Ti) by non-vacuum electron beam surfacing. The structure and phase composition of two types of alloys, obtained by depositing powder mixtures containing 10 or 20 wt. % tungsten in combination with 5 wt. % chromium and 30 wt. % boron, were studied. The surface layers, deposited by electron beam surfacing, exhibit a pre-eutectic structure comprising a solid solution (matrix) and colonies of lamellar eutectics with complex borides (hardening particles). After depositing the powder mixture (10W–5Cr–30B), the ductile matrix of the alloy is represented by a solid solution of chromium and nickel in γ‑Fe, with the eutectics containing (Cr, Fe)2B particles. The alloy obtained by depositing a mixture with increased tungsten content (20W–5Cr–30B) exhibits two types of solid solutions: γ‑Fe(Cr, Ni) and α‑Fe(Cr, Ni). The eutectic colonies contain borides, such as (Cr, Fe)2B and (Cr, W)3B4. The heat resistance of the modified layers exceeds that of steel 12Kh18N9T (AISI 321) by a factor of 5 (tested at 650 °C for 100 h). During oxidation of the surface-alloyed materials, an oxide film of the (Fe3–хCrх)O4 type is formed.

E. A. Pukhova , P. M. Petukhova , V. E. Andryushkina , V. A. Bataev , Yu. N. Malyutina , E. V. Domarov
The structure and heat resistance of the surface layers formed by depositing powder mixtures of boron, chromium and tungsten onto corrosion-resistant steel
Metallurgist. 2026. P.105–110. DOI: 10.1007/s11015-025-02070-8 WOS Scopus OpenAlex

Пухова Е.В. , Петухова П.М. , Андрюшкина В.Е. , Батаев В.А. , Малютина Ю.Н. , Домаров Е.В.
Структура и жаростойкость поверхностных слоев, сформированных при наплавке порошковых смесей бора, хрома и вольфрама на коррозионную сталь
Металлург. 2025. №9. С.105-110. DOI: 10.52351/00260827_2025_9_105 OpenAlex

Submitted:	Jul 24, 2025
Accepted:	Sep 1, 2025
Published print:	Jan 12, 2026

≡ Web of science:	WOS:001660301000001
≡ Scopus:	2-s2.0-105027439999
≡ OpenAlex:	W7123367310