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    史学星, 鞠新华, 王蕾, 白冰. DH36高强度船板钢的动态CCT曲线[J]. 机械工程材料, 2013, 37(1): 18-20.
    引用本文: 史学星, 鞠新华, 王蕾, 白冰. DH36高强度船板钢的动态CCT曲线[J]. 机械工程材料, 2013, 37(1): 18-20.
    shu
    SHI Xue-xing, JU Xing-hua, WANG Lei, BAI Bing. Dynamic Continuous Cooling Transformation Curve of High Strength DH36 Steel Used for Ship Plate[J]. Materials and Mechanical Engineering, 2013, 37(1): 18-20.
    Citation: SHI Xue-xing, JU Xing-hua, WANG Lei, BAI Bing. Dynamic Continuous Cooling Transformation Curve of High Strength DH36 Steel Used for Ship Plate[J]. Materials and Mechanical Engineering, 2013, 37(1): 18-20.
    shu

    DH36高强度船板钢的动态CCT曲线

    Dynamic Continuous Cooling Transformation Curve of High Strength DH36 Steel Used for Ship Plate

      摘要
    • 摘要: 利用Gleeble-2000D型热模拟试验机对DH36高强度船板钢的动态CCT曲线进行了研究。结果表明: 当冷速小于1 ℃·s-1时, DH36钢的组织为铁素体和珠光体; 冷速在3～13 ℃·s-1范围内, 得到铁素体、贝氏体和少量珠光体组织; 当冷速达到15 ℃·s-1时, 组织为贝氏体和少量铁素体; 当冷速达到30 ℃·s-1时, 有马氏体组织生成; DH36钢的显微硬度随着冷速的提高而增大, 当冷速达到30 ℃·s-1时, 显微硬度明显增大。

       

      Abstract: The dynamic continuous cooling transformation (CCT) curve of DH36 ship plate steel was studied by Gleeble-2000D thermal mechanical simulator. Results show that when the cooling rate was lower than 1 ℃·s-1, the microstructure of DH36 steel was ferrite and pearlite. The microstructure of DH36 steel was ferrite, bainite and little pearlite at the cooling rates of 3-13 ℃·s-1, bainite and a small amount ferrite at 15 ℃·s-1, martensite at 30 ℃·s-1. The microhardness of DH36 steel rose with the increase of cooling rate, and increased obviously when the cooling rate reached 30 ℃·s-1.

       

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