Additions of 0–30 wt.% Mn to Fe – TiB₂ high modulus steels result in broad spectrum of matrix microstructures

Mn has little effect on density, but both Young's modulus and mechanical properties are strongly affected

20 and 30 wt.% Mn yield in γ and ε-martensite, and no gain in lightweight performance

αʹ martensite and reverted γ with 10 wt.% Mn strikes an optimum balance between physical and mechanical performance