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INFLUENCING FACTORS FOR OBTAINING ULTRAFINE AUSTENITE GRAINS WITH INITIAL MICROSTRUCTURE OF WARM-ROLLED FERRITE/PEARLITE 被引量:2
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作者 S.J. Yao L.X. Du X.H. Liu G.D. Wang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2008年第6期391-398,共8页
Three warm-rolled ferrite/pearlite microstructures were prepared by rolling at 500℃, and the austenitizing characteristics were discussed in conjunction with deformation during the heating stage. The results indicate... Three warm-rolled ferrite/pearlite microstructures were prepared by rolling at 500℃, and the austenitizing characteristics were discussed in conjunction with deformation during the heating stage. The results indicated that the final austenite grain size was sensitive to the deformation direction of the initial warm-rolled microstructure. The transient microstructure at a given temperature was the most important influencing factor on the austenitizing characteristic combined with deformation. Moreover, the hot-rolled mierostructure also had to be prepared in an optimal state because of its direct effect on the warm-rolled microstructure. 展开更多
关键词 warm-rolled ferrite/pearlite austenite Deformation RECRYSTALLIZATION
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Effect of Warm-Rolled Pearlite Microstructural Features on Austenitic Transformation 被引量:1
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作者 YAO Sheng-jie DU Lin-xiu LIU Xiang-hua WANG Guo-dong 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2009年第4期55-59,共5页
The austenite transformation characteristics for various warm-rolled pearlite during rapid heating were investigated. The results indicate that the start temperature (Ts) is sensitive to the microstructural feature ... The austenite transformation characteristics for various warm-rolled pearlite during rapid heating were investigated. The results indicate that the start temperature (Ts) is sensitive to the microstructural feature of pearlite, whereas the dislocation plays an important role in the transformation rate; at the same time, the uniformity of austenite grains is more or less affected by the amount of spheroidized pearlite. A critical effect on the state of austenite grain is created through the influence of initial microstructures on the start temperature of transformation. 展开更多
关键词 warm rolling pearlite dislocation austenite transformation
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奥氏体控轧控冷条件下相变后α晶粒尺寸的预测 被引量:4
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作者 许云波 刘相华 王国栋 《东北大学学报(自然科学版)》 EI CAS CSCD 北大核心 2002年第2期144-147,共4页
基于相变动力学和热力学原理 ,讨论了椭球形铁素体晶核在奥氏体晶界形核及长大的动力学 ,根据形变促进相变的理论 ,变形引起位错密度增加而提高了奥氏体内的存储能 ,考虑了变形存储能增加对形核的促进作用 ,提出了预测控轧控冷过程的α... 基于相变动力学和热力学原理 ,讨论了椭球形铁素体晶核在奥氏体晶界形核及长大的动力学 ,根据形变促进相变的理论 ,变形引起位错密度增加而提高了奥氏体内的存储能 ,考虑了变形存储能增加对形核的促进作用 ,提出了预测控轧控冷过程的α晶粒尺寸的方法·用该方法模拟计算应变量、轧制温度、冷却速率及化学成分等因素对α晶粒尺寸的影响 ,与已有的实验结果吻合良好 ,表明这种理论处理方法可用来模拟这种相变过程· 展开更多
关键词 α晶粒尺寸 相变动力学 细化晶粒 形核速率 控轧控冷 连续冷却转变 位错密度 奥氏体晶界 预测 钢材质量 椭球形铁素体晶核
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控制轧制对高碳钢珠光体相变温度的影响 被引量:2
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作者 李明 樊邯生 +1 位作者 刘景荣 慈军 《东北工学院学报》 CSCD 1991年第1期43-47,共5页
采用压力-膨胀仪测定了高碳钢经控制轧制后,在连续冷却下珠光体的相变温度;并分析了不同控轧参数对珠光体相变温度影响的规律。实验结果表明:奥氏体形变使连续冷却下珠光体的相变温度提高。
关键词 控制轧制 高碳钢 珠光体
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