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Volume 25 Issue 1
Feb.  2004
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ZHAO Yong-xiang, YANG Bing, LI Peng-zhou. Random Cyclic Constitutive Models of 0Cr18Ni10Ti Pipe Steel[J]. Nuclear Power Engineering, 2004, 25(1): 45-49,63.
Citation: ZHAO Yong-xiang, YANG Bing, LI Peng-zhou. Random Cyclic Constitutive Models of 0Cr18Ni10Ti Pipe Steel[J]. Nuclear Power Engineering, 2004, 25(1): 45-49,63.

Random Cyclic Constitutive Models of 0Cr18Ni10Ti Pipe Steel

  • Received Date: 2003-01-26
  • Rev Recd Date: 2003-06-17
  • Available Online: 2025-07-29
  • Publish Date: 2004-02-15
  • Experimental study is performed on the random cyclic constitutive relations of a new pipe stainless steel, 0Cr18Ni10Ti, by an incremental strain-controlled fatigue test. In the test, it is verified that the random cyclic constitutive relations, like the wide recognized random cyclic strain-life relations, is an intrinsic fatigue phenomenon of engineering materials. Extrapolating the previous work by Zhao et al (Nucl. Eng. Des. 2000, 199(3): 315-326), probability-based constitutive models are constructed, respectively, on the bases of Ramberg-Osgood equation and its modified form. Scattering regularity and amount of the test data are taken into account. The models consist of the survival probability-strain-life curves, the confidence- strain-life curves, and the survival probability-confidence-strain-life curves. Availability and feasibility of the models have been indicated by analysis of the present test data.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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