Study of intergranular embrittlement in Fe-12Mn alloys

Grain boundary segregation engineering and austenite reversion turn embrittlement into toughness: Example of a 9 wt.% medium Mn steel

“…The tempering of medium Mn alloys in the compositional range 5-12 at.% Mn [4,17,54] severely degrades toughness, and the segregation of Mn to grain boundaries is identified as a key reason. Several theories exist about the mechanism for this, as summarized by Heo et al [17].…”