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Precipitation phases at different processes and heat treat rents as well as their effects on the mechanical properties of super-austenitic stainless steel
作者: Hunying Sun; Zhangjian Zhou; Man Wang; Shaofu Li; Liwei Zhang; Lei Zou

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Accession number:  20131716244304

  Title:  Precipitation phases at different processes and heat treat ments as well as their effects on the mechanical properties of super-austenitic stainless steel
  Authors:  Sun, Hunying1, 2; Zhou, Zhangjian1 ; Wang, Man1; Li, Shaofu1; Zhang, Liwei1; Zou, Lei1
  Author affiliation:  1 School of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Haidian District, Beijing 100083, China
2 Technology Center, Anyang Iron AndSteel Group Company, Anyang Iron and Steel Avenue 502, Yin Du District, Anyang 455004, China
  Corresponding author:  Zhou, Z. (zhouzhj@mater.ustb.edu.cn)
  Source title:  Journal of Physics: Conference Series
  Abbreviated source title:  J. Phys. Conf. Ser.
  Volume:  419
  Issue:  1
  Monograph title:  12th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, FGM 2012
  Issue date:  2013
  Publication year:  2013
  Article number:  012008
  Language:  English
  ISSN:  17426588
  E-ISSN:  17426596
  Document type:  Conference article (CA)
  Conference name:  12th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials, FGM 2012
  Conference date:  October 22, 2012 - October 26, 2012
  Conference location:  Beijing, China
  Conference code:  96638
  Publisher:  Institute of Physics Publishing, Temple Circus, Temple Way, Bristol, BS1 6BE, United Kingdom
  Abstract:  A new type lCr30Ni30Mo2TiZr super-austenitic stainless steel has been developed. The microstructures, precipitation phases and mechanical properties of the steel under different deformation processes and heat treatment (solution, stabilized treatment) were investigated using X-ray Diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) as well as mechanical tests. The results indicate that coarse carbides such as Cr-rich M23C6, sigma (σ), and little chi (χ) phases were formed in the steel, and large α' -Cr phases were also detected at three joint grain boundaries, and they were promoted by large strain. The precipitate phases were dissolved or transformed to intermetallic phase even at higher elevated temperature, and influenced the mechanical property obviously. These intermetallic compounds seriously reduced elongation of the rolled steel at room temperature and 700 °C, but increased the forged one at 700 °C. Impact absorbed energies of the stabilized specimens were lower than half of that solution status. © Published under licence by IOP Publishing Ltd.
  Number of references:  21
  Main heading:  Mechanical properties
  Controlled terms:  Austenitic stainless steel  -  Carbides  -  Functionally graded materials  -  Grain boundaries  -  Intermetallics  -  Lasers  -  Scanning electron microscopy  -  Transmission electron microscopy  -  X ray diffraction
  Uncontrolled terms:  Deformation process  -  Elevated temperature  -  Impact absorbed energy  -  Intermetallic phase  -  Precipitate phasis  -  Room temperature  -  Super-austenitic stainless steels  -  Transmission electron microscopy (TEM)
  Classification code:  931.3 Atomic and Molecular Physics -  812.1 Ceramics -  744.1 Lasers, General -  741.3 Optical Devices and Systems -  951 Materials Science -  741.1 Light/Optics -  531.2 Metallography -  531.1 Metallurgy -  415 Metals, Plastics, Wood and Other Structural Materials -  545.3 Steel
  DOI:  10.1088/1742-6596/419/1/012008
  Database:  Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.

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