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形变诱导相变轧制的热力耦合有限元分析 被引量:1

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摘要 应用热力耦合有限元法分析了带钢热轧过程中温度场和应变场的特点,并设计了一个新的变量,即“累积剪切应变”,来描述带钢在热轧变形过程剪切变形的特点,发现带钢表层累积剪切应变很大,其值可超过压下量的2倍,带钢心部的累积应变量则很小,这种累积剪切变形量的差异是促成带钢表层和心部显微组织差异的主要因素,由于界面换热系数很大,轧辊的激冷作用可使带钢表层温度大幅度下降,又由于接触时间很短,造成的低温层厚度远小于可能的超细晶粒层厚度,轧辊的激冷不是带钢表层形成超细晶粒的主要原因。
出处 《自然科学进展(国家重点实验室通讯)》 北大核心 2001年第12期1301-1306,共6页
基金 国家重大基础研究项目支持课题(批准号:G1998061512)
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参考文献11

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同被引文献14

  • 1陈国安,杨王玥,郭守真,孙祖庆.低碳微量铌钢形变强化相变的组织演变[J].金属学报,2004,40(10):1079-1084. 被引量:13
  • 2姚连登,李自刚,张丕军.超细晶粒及超高韧性厚板的研究[J].钢铁钒钛,2005,26(1):20-25. 被引量:10
  • 3范建文,张维旭,代晓莉,谢瑞萍.普碳钢中板表层组织超细化的变形机理[J].材料热处理学报,2005,26(6):69-74. 被引量:8
  • 4DONG Han, SUN Xingjun, ZHANG Shulan, et al. Grain refinement in steels and the application trials in China[J]. ISIJ International, 2008, 48(8): 1126-1132.
  • 5NAGAI K. Ultrafine-grained ferrite steel with dispersed cementite particles[J]. Journal of Materials Processing Technology, 2001, 117: 329-332.
  • 6BELADI H, KELLY G L, HODGSON P D. Ultrafine grained structure formation in steels using dynamic strain induced transformation processing[J]. International Materials Reviews, 2007, 52(1):14-28.
  • 7HURLEY P J, HODGSON P D, MUDDLE B C. Analysis and characterisation of ultra-fine ferrite produced during a new steel strip rolling process[J]. Seripta Materialia, 1999, 40(4): 433-438.
  • 8BELADI H, KELLY G L, HODGSON P D. Microstructural evolution of ultraf'me grained structure in plain carbon steels through single pass rolling[J]. Materials Science and Technology, 2004, 20(12): 1538-1544.
  • 9MABUCHI H, HASEGAWA T, ISHIKAWA T. Metallurgical features of steel plates with ultra fine grains in surface layers and their formation mechanism[J]. ISIJ International, 1999, 39(5): 477-485.
  • 10HUANG Y D, YANG W Y, SUN Z Q. Formation of ultrafine grained ferrite in low carbon steel by heavy deformation in ferrite or dual phase region[J].Joumal of Materials Processing Technology, 2003, 134: 19-25.

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