| 304不锈钢的单轴棘轮变形与失效行为研究 |
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| 引用本文： | 杨显杰,高庆,蔡力勋,刘宇杰.304不锈钢的单轴棘轮变形与失效行为研究[J].核动力工程,2004,25(5):444-451. |
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| 作者姓名： | 杨显杰 高庆 蔡力勋 刘宇杰 |
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| 作者单位： | 西南交通大学应用力学与工程系,成都,610031;西南交通大学应用力学与工程系,成都,610031;西南交通大学应用力学与工程系,成都,610031;西南交通大学应用力学与工程系,成都,610031 |
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| 基金项目： | 国家自然科学基金(10372086)，教育部留学回国人员科研启动基金资助 |
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| 摘 要： | 对304不锈钢在室温下进行了单轴应变控制下的应变棘轮变形与失效以及低周疲劳试验研究，系统地揭示了材料在循环过程中的材料变形与失效行为。研究表明：材料的应变棘轮变形与失效既不同于单轴拉伸，也不同于相同应变幅值下的对称应变循环加载时的变形与失效，而是强烈地依赖于应变幅值与每一循环周次在最大拉应变处的应变增加量。观察到了一些有意义的结果，
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| 关 键 词： | 304不锈钢 循环应变棘轮 低周疲劳 循环塑性 |
| 文章编号： | 0258-0926(2004)05-0444-08 |
Experimental Study on Uniaxial Ratcheting Deformation and Failure Behavior of 304 Stainless Steel |
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| YANG Xian-jie,GAO Qing,CAI Li-xun,LIU Yu-jie.Experimental Study on Uniaxial Ratcheting Deformation and Failure Behavior of 304 Stainless Steel[J].Nuclear Power Engineering,2004,25(5):444-451. |
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| Authors: | YANG Xian-jie GAO Qing CAI Li-xun LIU Yu-jie |
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| Abstract: | In the paper, the tests of cyclic strain ratcheting and low cycle fatigue for 304 stainless steel under uniaxial cyclic straining were carried out to systematically explore the deformation and failure behavior of the material. The experimental study shows that the cyclic strain ratcheting deformation behavior of the material is different from either the uniaxial monotonic tensile one or the cyclic deformation one under the symmetrical cyclic straining with the same strain amplitude, and the strain ratcheting deformation and failure behaviors depend on both the plastic strain amplitude and the strain increment at the cyclic maximum strain. Some significant results were observed. |
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| Keywords: | Stainless steel Cyclic strain ratcheting Low cycle fatigue Cyclic plasticity |
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