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首页> 外文期刊>Metallurgist >EVOLUTION OF AUSTENITE GRAIN STRUCTURE AND MICROALLOYING ELEMENT PRECIPITATION DURING HEATING OF STEEL OF STRENGTH CLASS K65 (X80) FOR ROLLING
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EVOLUTION OF AUSTENITE GRAIN STRUCTURE AND MICROALLOYING ELEMENT PRECIPITATION DURING HEATING OF STEEL OF STRENGTH CLASS K65 (X80) FOR ROLLING

机译：轧制强度等级为K65（X80）的钢在加热过程中奥氏体晶粒组织的演变和微合金元素的析出

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摘要

The effect of temperature and soaking time during slab heating for rolling on austenite structure size and uniformity, and dissolution of microalloying element precipitates, is considered. It is shown that the heating regime has a strong effect on austenite structure uniformity. With an increase in heating temperature, there is anomalous growth of individual grains, and this is a consequence of gradual microalloying element dissolution. As a result of this, boundaries acquire mobility, thus leading to generation of secondary recrystallization and significant inhomogeneity, and embrittlement of the structure. It is also shown that austenite grain size and distribution after heating is inherited during roughing rolling.
机译：考虑了板坯加热轧制时的温度和保温时间对奥氏体组织尺寸和均匀性以及微合金元素沉淀物溶解的影响。结果表明，加热方式对奥氏体组织均匀性有很大的影响。随着加热温度的升高，单个晶粒会异常生长，这是微合金元素逐渐溶解的结果。结果，边界获得迁移率，从而导致二次再结晶和明显的不均匀性的产生，以及结构的脆化。还表明，在粗轧过程中，继承了加热后的奥氏体晶粒尺寸和分布。

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