Ferrite phase transformation in dual-phase steel under shock loading

Microstructural changes and ferrite phase transformation under shock loading, between 8.5 GPa 17.5 GPa, in a hot-rolled Lean Duplex Stainless Steel (commercially known as LDX 2101) were investigated as-received pre-deformed conditions. The latter condition was considered to distinguish classical deformation twins at high strain rates from those associated the reversible transformation. Plate impact experiments used introduce compressive loading peak stresses below above stress threshold of transformation, 13 GPa. Effects also examined by compressing shocked samples quasi-statically comparing their response with tested condition. microstructural examinations revealed that 2101 experienced ~17 fingerprints for this {112}<111> primary {332}<113> secondary twins. In addition, yield sample pre-shocked showed considerable increase (⁓150 MPa) compared flow