Effect of cold work and aging on mechanical properties of a copper bearing HSLA-100 steel

摘要: Influence of cold working and aging on the mechanical properties a Cu-bearing HSLA-100 steel has been studied. The was given solution treatment at 1000°C, followed by rolling to 25, 50 80 pct deformations 600°C for various durations. Substantial improvement in hardness UTS observed peak aged condition treatments, but expense ductility impact-energy. Extensive scanning electron microscopic studies carried out impact tensile fracture surfaces suggest that poor energy low could be associated with inhomogeneous deformation caused existence coherent precipitates. Other parameters adversely affecting toughness stages work may include high stress concentration density dislocation network dislocation-precipitate interface. Overaging treatments resulted higher ductility, presumably due incoherent precipitates reduction cell boundaries. It is good combination obtained suitable cause coexistence