4.6 Article

In Situ Observation and Growth Kinetics of Bainite Laths in the Coarse-Grained Heat-Affected Zone of 2.25Cr-1Mo Heat-Resistant Steel During Simulated Welding

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SPRINGER
DOI: 10.1007/s11661-020-06061-z

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资金

  1. National Natural Science Foundation of China [51861130361, 51850410522, 51861145312, 52011530180]
  2. Newton Advanced Fellowship by the Royal Society [RP12G0414]
  3. Fundamental Research Fund for Central Universities [N172502004, N182506002, N2025025]
  4. Natural Science Foundation of Liaoning [2019KF0502]
  5. Xingliao Talents Program [XLYC1807024, XLYC1802024]
  6. UK's Engineering and Physical Sciences Research Council, EPSRC Early Career Fellowship Scheme [EP/R043973/1]
  7. EPSRC [EP/R043973/1] Funding Source: UKRI

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The in situ Austenite -> bainite transformation in the coarse-grained heat-affected zone of 2.25Cr-1Mo steel has been documented using a confocal scanning laser microscope, and the kinetics of bainite growth has been quantified. Four typical nucleation sites of bainite laths have been identified. Moreover, the growth rate of nine distinctive bainite laths varies from 9 to 200 μm/s, depending on the degree of supercooling and nucleation sites of bainite laths.
Austenite -> bainite transformation has been documented in situ by confocal scanning laser microscope, and bainite growth kinetics has been quantified in the coarse-grained heat-affected zone of 2.25Cr-1Mo steel. Four typical nucleation sites of bainite laths have been identified. In addition, growth rate of nine distinctive bainite laths varies from 9 to 200 mu m/s, depending on the degree of supercooling and nucleation sites of bainite laths.

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