Tempering of low-temperature bainite

Peet, Mathew J.; Babu, Sudarsanam Suresh; Miller, Mike K.; Bhadeshia, H. K. D. H.

doi:10.1007/s11661-017-4086-x

Tempering of low-temperature bainite

Journal Article · Mon Apr 10 00:00:00 EDT 2017 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI:https://doi.org/10.1007/s11661-017-4086-x· OSTI ID:1357964

Peet, Mathew J. ^[1]; Babu, Sudarsanam Suresh ^[2]; Miller, Mike K. ^[3]; Bhadeshia, H. K. D. H. ^[1]

Univ. of Cambridge, Cambridge (United Kingdom)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Electron microscopy, X-ray diffraction, and atom probe tomography have been used to identify the changes which occur during the tempering of a carbide-free bainitic steel transformed at 473 K (200 °C). Partitioning of solute between ferrite and thin-films of retained austenite was observed on tempering at 673 K (400 °C) for 30 minutes. After tempering at 673 K (400 °C) and 773 K (500 °C) for 30 minutes, cementite was observed in the form of nanometre scale precipitates. Here, proximity histograms showed that the partitioning of solutes other than silicon from the cementite was slight at 673 K (400 °C) and more obvious at 773 K (500 °C). In both cases, the nanometre scale carbides are greatly depleted in silicon.

View Accepted Manuscript (DOE)

Research Organization:: Manufacturing Demonstration Facility (MDF); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)

Sponsoring Organization:: ORNL work for others; USDOE, Office of Management, Budget, and Evaluation

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1357964

Journal Information:: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 529 Vol. 43; ISSN 1073-5623

Publisher:: ASM InternationalCopyright Statement

Country of Publication:: United States

Language:: English

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