Microstructure and the elemental and phase compositions of the diffusion joint of grade 45 steel through a powder layer

Autor:	A. A. Mikheev, E. G. Zelenkova, Galina M. Zeer, Elena Fedorova, O. V. Belousov, Yu. P. Koroleva
Rok vydání:	2015
Předmět:	Materials science Physics and Astronomy (miscellaneous) Diffusion technology industry and agriculture Sintering chemistry.chemical_element Diffusion welding Microstructure Nickel chemistry Phase (matter) Composite material Layer (electronics) Solid solution
Zdroj:	Technical Physics. 60:525-530
ISSN:	1090-6525 1063-7842
DOI:	10.1134/s1063784215040313
Popis:	The microstructures of the transition zone and the powder layer, the concentration distribution of chemical elements across a diffusion joint, and the microhardness of the grade 45 steel-Ni powder layer-grade 45 steel layered composite materials fabricated by diffusion welding at various temperatures are studied. It is shown that the deposition of a nickel sublayer on steel and the application of a submicron nickel powder as an activating layer make it possible to form a high-quality diffusion joint at a temperature of 850°C, which is ~0.6 of the melting temperature of nickel (which has the lowest melting temperature in the given composite material). The sintering of a nickel powder and the formation of a transition zone between the nickel layer and steel occur simultaneously in a solid phase during diffusion joining. The transition zone consists of an α-Fe solid solution and the FeNi3 compound.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dfee9452a768efe7b1b1db0db961f9db https://doi.org/10.1134/s1063784215040313 Zobrazit plný text záznamu Plný text ve formátu PDF