为了防止压力容器因过量塑性变形导致结构局部破坏,研究了通用压力容器用钢的应变极限.在研究压力容器用钢延性断裂应变测试手段和分析方法基础上,通过大量缺口圆棒试样的拉伸试验,建立了我国压力容器常用三种材料16MnR、Q235和0Cr18Ni9钢的应力三轴度系数-断裂应变关系,并将试验结果与美国ASME Ⅷ-2 2007应变限制条件进行了比较.结果表明:ASME Ⅷ-2 2007标准的应变限制条件适用于我国压力容器标准用碳钢材料,但是不适用奥氏体不锈钢材料:为了提高材料断裂应变的计算精度,并建立我国压力容器用钢的应变限制条件,尚需要进行大量的材料断裂应变测试和研究.
所属栏目
材料性能及其应用“十一五”国家科技支撑计划资助项目(2006BAK02B02)
收稿日期
2009/3/72009/12/3
作者单位
邓阳春:湖北省特种设备安全检验检测研究院, 武汉 430077
徐彤:中国特种设备检测研究院, 北京 100013
杨笑峰:湖北省特种设备安全检验检测研究院, 武汉 430077
陈钢:中国特种设备检测研究院, 北京 100013
备注
邓阳春(1967-),男,湖北洪湖人,高级工程师,博士.
引用该论文:
DENG Yang-chun,XU Tong,YANG Xiao-feng,CHEN Gang.Strain Limit of Pressure Vessel Steels[J].Materials for mechancial engineering,2010,34(3):66～69
邓阳春,徐彤,杨笑峰,陈钢.压力容器用钢的应变极限[J].机械工程材料,2010,34(3):66～69
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