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首页> 外文期刊>Materials Science and Technology: MST: A publication of the Institute of Metals >Ferrite recrystallisation and intercritical annealing of cold-rolled low alloy medium carbon steel
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Ferrite recrystallisation and intercritical annealing of cold-rolled low alloy medium carbon steel

机译:冷轧低合金中碳钢的铁氧体再结晶和跨临界退火

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摘要

Static recrystallisation of cold-rolled AISI 4130 medium carbon steel in the ferritic regime and its response to intercritical annealing treatment are studied. A fine and recrystallised microstructure with improved mechanical properties is obtained via subcritical annealing of cold-rolled sheet, where the subsequent intercritical annealing results in the enhancement of tensile strength via the formation of dual-phase microstructure. Intercritical annealing of the cold-rolled sheet is characterised by an initial drop in hardness due to recrystallisation and subsequent rise in hardness as a result of austenitisation. It is revealed that continuous martensite phase can result in a higher deformation resistance. Finally, the effects of intercritical annealing at temperatures below pearlite dissolution finish temperature (Ac-1f) are discussed.
机译:研究了铁型AISI 4130中碳钢在铁素体制度中的静态重结晶及其对跨临界退火处理的反应。 通过亚临界的冷轧板退火获得具有改进的机械性能的精细和重结晶的微观结构,其中随后的跨临界退火导致通过形成双相微结构的抗拉强度的增强。 冷轧板的跨临界退火的特征在于由于重结晶引起的初始硬度下降,并且随后由于奥氏体炎而升高硬度。 据透露,连续的马氏体相可以导致更高的变形性。 最后,讨论了核临界退火在低于珠光体溶解结束温度(AC-1F)的温度下的影响。

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