A novel forming technique to coforge bimetal components into complex geometries

The novel Near Solidus Forming process has been used to coforge stainless steel 304 to encapsulate a core of 42CrMo4 steel in Stainless 304 in the form of a complex spindle. The forging was achieved with a force of 280 t, in a single strike, at a temperature of 1370 °C. The component successfully fi...

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Bibliographic Details
Published in:Manufacturing letters 2020-10, Vol.26, p.21-24
Main Authors: Slater, Carl, Plata, Gorka, Sánchez, Andrea, Lozares, Jokin, Hurtado, Iñaki
Format: Article
Language:English
Subjects:
Bimetal
Coforging
Diffusion bonding
Near solidus forming
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Summary:The novel Near Solidus Forming process has been used to coforge stainless steel 304 to encapsulate a core of 42CrMo4 steel in Stainless 304 in the form of a complex spindle. The forging was achieved with a force of 280 t, in a single strike, at a temperature of 1370 °C. The component successfully filled the die and a range of microstructural evaluations showed an inclusion/porosity free interface between the two steels with >3 µm of cross diffusion.
ISSN:2213-8463
2213-8463
DOI:10.1016/j.mfglet.2020.09.006