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Cyclic Deformation Behavior of Modified 9Cr–1Mo Steel at Elevated Temperatures

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Mechanical and Creep Behavior of Advanced Materials

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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Abstract

Modified 9Cr–1Mo steel exhibited dynamic strain ageing (DSA) in the temperature range from 523 to 673 K and it was established on the basis of plateau/peak in yield and tensile strength, minima in ductility and serrations in stress–strain curve. High density of dislocations and typical features like dislocation debris, kinks and bowing of dislocations was observed in the regime of DSA. This steel exhibited cyclic softening irrespective of the strain amplitude, strain rate, and temperature. The observed cyclic softening is associated with many factors like cell formation at room temperature and additionally annihilation of array of dislocations at 573 K, in addition to coarsening of carbides at 873 K.

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Authors and Affiliations

  1. Department of Metallurgical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, 221005, India

    Vakil Singh & Preeti Verma

Authors
  1. Vakil Singh
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  2. Preeti Verma
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Correspondence to Vakil Singh .

Editor information

Editors and Affiliations

  1. Dept of Chemical and Matls Engrg, University of Idaho Dept of Chemical and Matls Engrg, Moscow, Idaho, USA

    Indrajit Charit

  2. North Carolina State University , Raleigh, North Carolina, USA

    Yuntian T. Zhu

  3. Los Alamos National Laboratory , Los Alamos, New Mexico, USA

    Stuart A. Maloy

  4. University of Tennessee at Knoxville , KNOXVILLE, Tennessee, USA

    Peter K. Liaw

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© 2017 The Minerals, Metals & Materials Society

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Singh, V., Verma, P. (2017). Cyclic Deformation Behavior of Modified 9Cr–1Mo Steel at Elevated Temperatures. In: Charit, I., Zhu, Y., Maloy, S., Liaw, P. (eds) Mechanical and Creep Behavior of Advanced Materials. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51097-2_15

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