Analysis of cold bending fracture of NM500 steel plate
Fracture occurred for a 10 mm NM500 steel plate in the cold bending test process.In order to study the cause of fracture,the bending test fracture steel plate and qualified steel plate were used for comprehensive analysis including cold bending process parameters,tensile properties,microstructure and inclusions type,fracture morphology,and energy spec-trum detection comparison.The results showed that the large size MnS inclusions and agglomerated TiN inclusions with ir-regular morphology destroyed the continuity of the steel plate,and the micro-cracks appeared in the cold bending process.With the increase of stress,the micro-cracks expanded and finally led to cold bending fracture of the steel plate.
NETL
NSTL
万方数据
