【摘要】 探讨微合金化高强度控轧钢板在制管过程中由于塑性弯曲变形所引起的包申格效应,以及这种效应对屈服强度和屈强比的影响。试验发现包申格效应导致屈服强度降低,应变硬化指数明显分为两个阶段。板与管相比,屈强比无明显改变。这些结果对管道建设业主和制板钢厂均有参考价值。更多还原

【Abstract】 It is presented that the Bauschinger effect(BE) of high strength micro-alloying steel plate experienced by plastic bending deformation as well as its influence on yield strength,strain hardening exponent and yield ratio.It is found that BE causes yield strength to be decreased,strain hardening exponent to be divided into two segments,the yield ratio nearly keeps unchanged in plate in comparison with that in tube.The data may be useful to both the pipeline constructors and steel makers.更多还原