Study on Microstructure and Mechanical Properties of V-N Microalloyed Heavy Section H Beam and Precipitates in the Steels
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摘要: 针对高强度厚壁H型钢易在截面不同部位产生性能差异的特点,研究了V-N微合金化方式对高强度厚壁H型钢性能均匀性的影响。结果显示,V-N微合金化对H型钢力学性能的截面不均匀性有所改善,尤其显著提高了翼缘和腹板结合部位的性能。这和V在H型钢不同部位的不同析出行为有关系。Abstract: There apt to be different mechanical performance in different positions of high strength heavy section H beam.In this paper the effect of V-N microalloying on section homogeneiey of mechanical properties of H beam is studied.The result shows that V-N microalloying helps to improve section homogeneity of mechanical property for H beam,especially for strength enhancement in conjonction joint of flange and web plate.The above phenomena are closely associated with different precipitation behavior in different positions of H beam.
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Key words:
- H beam /
- V-N microalloying /
- homogeneity /
- precipitates
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