Si、Al元素对Q&P钢连续冷却的相变及组织影响
Effect of Aluminum and Silicon on Phase Transformation and Microstructure of Quenching and Partitioning Steel During Continuous Cooling
陈雨来, 董 辰, 江海涛, 唐 荻
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作者单位：北京科技大学 高效轧制国家工程研究中心, 北京 100083
中文关键字：Q&P钢； 连续冷却转变曲线； 硬度
英文关键字：Q&P steel; continuous cooling transformation curve; hardness
中文摘要：采用膨胀法结合金相-硬度法，在DIL-805热膨胀仪上测定了高硅及高铝Q&P钢的临界点。测定了不同冷却速度下的连续冷却转变膨胀曲线，并对比Al元素的加入对Q&P钢连续冷却转变产物的组织和硬度的影响。对制定高硅及高铝Q&P钢的热处理工艺提供一定的参考依据。
英文摘要：The critical points of C-Mn-Al and C-Mn-Si Q&P steel were determined by dilatometric change referencing microscopic test and hardness measurement on DIL-805 thermal dilatometer. The different expending curves of continuous cooling transformation were measured and the effects of element Al on product's microstructure and hardness after continuous cooling transformation process were compared. It provides references for establishing heat treatment process for C-Mn-Si and C-Mn-Al Q&P steel.