Texture and mechanical properties of API X100 steel manufactured under various thermomechanical cycles
Texture and mechanical properties of API X100 steel manufactured under various thermomechanical cycles
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DOI：
10.1016/j.msea.2011.09.072
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发表时间：
2012
期刊：
影响因子：
6.4
通讯作者：
S. Nafisi;M. Arafin;L. Collins;J. Szpunar
中科院分区：
文献类型：
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作者：
S. Nafisi;M. Arafin;L. Collins;J. Szpunar
研究了不同精轧工艺对API（美国石油学会）X100钢织构和力学性能的影响。已经发现，精轧开始和结束温度都影响最终织构，从而影响机械性能和这些性能的各向异性。高温精轧产生非常弱的织构。这种织构是动态再结晶的结果，并与大的晶粒尺寸和较差的机械性能有关。稍微延迟的加速冷却开始导致大部分多边形铁素体的形成，并以强度为代价增加了塑性。在790-810°C范围内的近等温轧制产生了期望的{332} 113和不期望的{113} 110组分的最高织构强度。后一种纹理成分以及{100} 110成分减轻了{332} 113成分的积极影响。另一方面，较高的精轧开始温度（840°C）和较低的精轧结束温度（700°C）抑制了{113}<$110 <$10和{100}<$110 <$10的强度，而{332}<$113 <$10的强度明显足以降低机械性能的各向异性。准多边形铁素体的部分变形似乎也有助于增加所研究的钢的强度。
The role of various finishing rolling operations on the texture and mechanical properties has been studied for API (American Petroleum Institute) X100 steel. It has been found that both the finish rolling start and end temperatures influence the final texture and thus, the mechanical properties and the anisotropy of these properties. High temperature finish rolling produces a very weak texture. This texture is a result of dynamic recrystallization, and associated with large grain size and inferior mechanical properties. A slightly delayed start of accelerated cooling led to the formation of large fraction of polygonal ferrite and increased the ductility at the expense of strength. Near-isothermal rolling in the range of 790–810°C produced the highest texture intensities of both the desired {332}〈113〉 and the undesired {113}〈110〉 components. The latter texture components as well as the {100}〈110〉 component, mitigated the positive effect of the {332}〈113〉 component. On the other hand, a relatively higher finish rolling start temperature (840°C) and a low finish rolling end temperature (700°C) suppressed the strength of the {113}〈110〉 and {100}〈110〉 components, while the {332}〈113〉 component apparently was sufficient for the reduction of the anisotropy of mechanical properties. Partial deformation of the quasi-polygonal ferrites also appeared to have contributed to increasing the strength of the investigated steel.