CAJ | 학술논문

为满足汽车工业轻量化发展要求，以Q&P（quenching&partitioning）工艺为基础的先进高强度钢受到了广泛关注，为使其在普通热连轧生产线上实现工业化并广泛应用，本文对Q&P理念在热轧工艺中的应用进行了基础研究。结果表明在传统热处理Q&P工艺中引入热变形处理后，组织细化显著，并获得了一定量的残余奥氏体。实验钢在保持较高强度的同时获得了较大的强塑积，结合目前国内热连轧生产线以超快冷系统为核心的新一代控轧控冷（TMCP）技术的应用，确定了在热连轧生产线生产热轧Q&P钢（DQ （direct quenching）&P钢）的可行性。
위만족기차공업경양화발전요구，이Q&P（quenching&partitioning）공예위기출적선진고강도강수도료엄범관주，위사기재보통열련알생산선상실현공업화병엄범응용，본문대Q&P이념재열알공예중적응용진행료기출연구。결과표명재전통열처리Q&P공예중인입열변형처리후，조직세화현저，병획득료일정량적잔여오씨체。실험강재보지교고강도적동시획득료교대적강소적，결합목전국내열련알생산선이초쾌랭계통위핵심적신일대공알공랭（TMCP）기술적응용，학정료재열련알생산선생산열알Q&P강（DQ （direct quenching）&P강）적가행성。
In order to satisfy the requirements of lightweight in the automotive industry,the development of advanced high strength steel obtained using the quenching and partitioning (Q&P)process has been paid extensive attentions. In the present work,the application of Q&P concept during hot rolling was investigated for wide use of Q&P process on the conventional hot rolling production line. It was shown that introducing thermo-mechanical treatment during the conventional Q&P process was favorable for significantly refining the microstructure and obtaining a certain amount of retained austenite,and the experimental steel possessed the higher product of strength and ductility under the condition of maintaining higher strength. The feasibility of producing the hot rolled Q&P steel(DQ(direct quenching)&P steel)was determined on the hot rolling production line by employing the new-generation thermo mechanical control process (TMCP)with ultra fast cooling at the core.