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| 1 | Q&P钢在冷却过程中铁素体的相变规律显示文摘为了研究冷却过程中Q&P钢(quenching and partition steel)铁素体的相变规律,在热膨胀仪上以846℃均热200s为冷却的初始条件,检测了成分(质量分数)为0.2%C、1.25%Si、2.0%Mn的Q&P钢在不同冷却速率下铁素体的相变热膨胀数据,应用杠杆定律将数据处理为相变规律与温度的关系,通过光学显微镜检测热处理后金相中的铁素体相体积分数和铁素体晶粒尺寸,得出了饱和位置形核条件下铁素体的形核率,基于混合控制模型得出了铁素体相变的相界迁移速率。结合相变开始温度,利用混合控制模型计算了相变结束温度和铁素体晶粒尺寸在相变过程中的演变规律,铁素体晶粒尺寸计算值与实测值吻合程度较高,相变结束温度的计算值与实测值的误差在±15℃以内,所获得的铁素体相变规律可以用于控制Q&P钢在冷却过程中的铁素体相变体积分数。 | 何方 王瑞珍 杨才福 贾亚飞 吴彦欣 李免 | 2020 | 钢铁2020，55，9： | 3 |
| 2 | Excellent mechanical properties and resistance to cavitation erosion for an ultra-low carbon Cr Mn N stainless steel through quenching and partitioning treatment显示文摘The retained austenite content(RAC),the mechanical properties,and the resistance to cavitation erosion(CE)of the00Cr13Mn8Mo N steel after quenching and partitioning(Q&P)processing were investigated.The results show that the Q&P process affected the RAC,which reached the maximum value after partitioning at 400°C for 10 min.The tensile strength of the steel slightly decreased with increasing partitioning temperature and time.However,the elongation and product of strength and elongation first increased and then decreased.The sample partitioned at 400°C for 10 min exhibited the optimal property:a strength-ductility of 23.8 GPa?%.The resistance to CE for the 00Cr13Mn8Mo N steel treated by the Q&P process was improved due to work hardening,spalling,and cavitation-induced martensitic transformation of the retained austenite. | Ze-an Zhou Wan-tang Fu Zhe Zhu Bin Li Zhong-ping Shi Shu-hua Sun | 2018 | International Journal of Minerals,Metallurgy and Materials2018，25，5： | 2 |
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