Microstructure And Mechanical Properties Of Heat Treated FSLA Steel Produced By The Binder Jet Process

Authors:

Chris Schade (Hoeganaes Corporation, USA),
Corina Junghetu (Hoeganaes Europe, Romania),
Thomas Murphy (Hoeganaes Corporation, USA),
Chris Schade (Hoeganaes Corporation, USA)

Abstract:

An alloy, called FSLA (free-sintering low-alloy), was designed and implemented for use with binder jet printing. This work focuses on various heat treatments that can be utilized with the alloy to produce a range of properties for various applications. The microstructure of the alloy can be varied post-sintering, by heat treatment, to give a wide range of mechanical properties that are suitable for automotive components. Balancing the carbides in the structure along with the amounts of ferrite and martensite|bainite give a range of ultimate tensile strengths from approximatelt 490 to 1000 MPa. Unlike other low alloy steels, the material has been designed to have a high degree of sinterability which allows densities of the order of 98% to be reached while sintering at temperatures typically used in metal injection molding (1380 degrees Celcius).

DOI:

https://doi.org/10.59499/WP225371801