基于主曲线方法确定2.25Cr-1Mo钢韧脆转变区的断裂韧度
Determination of Fracture Toughness of 2.25Cr-1Mo Steel in Transition-Temperature Region Based on Master Curve Method
摘 要
针对运行了20万h的加氢反应器接管弯头材料2.25Cr-1Mo钢,测试了其低温拉伸性能、夏比V型缺口冲击功及断裂韧性;在此基础上,得到了其主曲线的参考温度,通过进一步预测得到了该钢在整个韧脆转变区的断裂韧度分布。结果表明:2.25Cr-1Mo钢主曲线的参考温度为-154 ℃;经过20万h的运行,该钢仍具有充足的韧性;验证了主曲线方法对非核电用2.25Cr-1Mo钢的适用性。
主曲线
韧脆转变区
断裂韧性
2.25Cr-1Mo steel
master curve
ductile-brittle transition region
fracture toughness
Abstract
The tensile properties,Charpy V-notch impact energy and fracture toughness of 2.25Cr-1Mo steel,which was used in piping elbow of hydrogenation reactor for 200 000 h,were tested at cryogenic temperature. Based on these tests,the master curve reference temperature T0 of the steel was obtained,and the fracture toughness distribution in the whole ductile-brittle transition temperature zones was got. The results show that the master curve reference temperature of 2.25Cr-1Mo steel was -154 ℃,the material of elbow still had good toughness after 200 000 h service. The applicability of Master Curve method to 2.25Cr-1Mo steel which is not used in nuclear power is validated.
中图分类号 TQ050.4
所属栏目 物理模拟与数值模拟
基金项目 国家高技术研究发展计划(“863”计划)资助项目(2012AA040105)
收稿日期 2013/11/15
修改稿日期 2014/10/29
网络出版日期
作者单位点击查看
备注惠虎(1974-),男,山东济宁人,教授,博士。
引用该论文: HUI Hu,WANG Jia-huan,WANG Xian-he,CAO Yu-peng,YANG Fan. Determination of Fracture Toughness of 2.25Cr-1Mo Steel in Transition-Temperature Region Based on Master Curve Method[J]. Materials for mechancial engineering, 2015, 39(1): 98～101
惠虎,王佳欢,王仙河,曹昱澎,杨帆. 基于主曲线方法确定2.25Cr-1Mo钢韧脆转变区的断裂韧度[J]. 机械工程材料, 2015, 39(1): 98～101
被引情况:
【1】崔庆丰,惠 虎,王昊旸,李培宁, "冲击功与断裂韧度经验关系式对Q345R钢的适用性",机械工程材料 39, 84-90(2015)
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参考文献
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【3】曹昱澎,惠虎,轩福贞,等.基于Master Curve方法研究16MnR钢韧脆转变区断裂韧性［J］.压力容器,2008,25(12):465-468.
【4】曹昱澎,惠虎,轩福贞.基于小尺寸试样的主曲线参考温度T0的确定方法［J］.压力容器,2011,28(7):17-23.
【5】杨文斗.核电厂压力容器安全评估的新方法—主曲线简介［J］.核安全,2011,2(2):7-13.
【6】ASTM E1921. Standard test method for determination of reference temperature,T0,for ferritic steels in the transition range［S］.
【7】ASTM E1820-01. Standard test method for measurement of fracture toughness［S］.
【8】The American Society of Mechanical Engineers. ASME boiler and pressure vessel code section Ⅱ-A［S］.
【9】JB/T 7556-1994 热壁加氢反应器用21/4Cr-1Mo钢锻件技术要求［S］.
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