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


Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1134/S1063784215040313

Аннотация: 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 tПоказать полностьюhe 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 850A degrees C, which is similar to 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 alpha-Fe solid solution and the FeNi3 compound.

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Выпуск журнала: Vol. 60, Is. 4

Номера страниц: 525-530

ISSN журнала: 10637842

Место издания: NEW YORK



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