High-carbon martensite steels (with C> 0.5 wt.%) are very hard but at the same time as brittle
as glass in as-quenched or low-temperature-tempered state. Such extreme brittleness …

The high strength of martensitic steel can be attributed to its fine hierarchical structure and
high dislocation density. To further improve the mechanical properties of low-carbon …

Ultra-high strength structural steel is a kind of steel with yield strength of more than 1200
MPa and excellent fracture toughness and ductility, and it is widely used in manufacturing …

Ultra-high strength steels are the crucial irreplaceable materials in the fields of aerospace,
national defense and military industries. Unfortunately, it is challenging to achieve the …

Based on the proposed design idea of the anti-transformation-induced plasticity effect, both
the additions of the Nb element and pretreatment of the normalization process as a novel …

We develop a new ultrastrong medium Mn steel with a density reduced to 7.39 g cm–3. It
has a novel tri-phase microstructure comprising a hierarchical martensitic matrix (α') …

Abstract A Fe-9Mn-0.15 Si-0.26 C steel was prepared via warm rolling, showing the
heterogeneous microstructures composed of ultrafine-grained ferrite (~ 330 nm) and …

Needs for steel designs of ultra-high strength and excellent ductility have been an important
issue in worldwide automotive industries to achieve energy conservation, improvement of …

The high-manganese steels are important structural materials, owing to their excellent
toughness at low temperatures. However, the microstructural causes for their unusual …

Martensitic transformation can easily induce a maximum hardness value of 800–900 HV
(Vickers hardness) for steels with carbon contents of 0.6 wt.% and above. However, the …