Hot deformation study by processing maps of N containing microalloyed steel

M. Dikovits, Maria Cecilia Poletti, F. Warchomicka, G. P. Chaudhari, V. Pancholi

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

The hot formability of a microalloyed steel with 0.16 wt-%C modified with N is studied by using processing maps. Compression tests of cylindrical samples are carried out using a Gleeble®3800 simulator in the range of temperature between 750 - 1000°C and strain rates between 0.01-100 s -1. For this alloy, an A r3-temperature about 740°C is determined by means of dilatometry. Processing maps are calculated using the modified dynamic material model developed by Murty and Rao for different logarithmic strains. For the instability map, the parameter κ j developed by the authors in previous works is used and compared with other instability values. Softening in the flow curves provoked by induced ferrite during deformation at low temperatures and low strain rates is reflected in the η-value. Light optical microscopy (LOM) and electron back scattered diffraction (EBSD) measurements are used to study the microstructure of the hot deformed samples to determine the deformation mechanisms active and to verify the processing maps.

Original languageEnglish
Title of host publicationTMS Annual Meeting
PublisherJohn Wiley & Sons, Inc
Pages503-510
Number of pages8
ISBN (Print)9781118291221
DOIs
Publication statusPublished - 2012
EventTMS 2012 - Orlando, Fla., United States
Duration: 11 Mar 201215 Mar 2012

Conference

ConferenceTMS 2012
CountryUnited States
CityOrlando, Fla.
Period11/03/1215/03/12

Fingerprint

Hot working
Steel
steels
Processing
strain rate
Optical microscopy
Strain rate
dilatometry
compression tests
Formability
softening
Temperature
simulators
Ferrite
ferrites
Diffraction
Simulators
microscopy
microstructure
Microstructure

Keywords

  • Hot deformation
  • Microalloyed steel
  • Processing maps

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Fields of Expertise

  • Advanced Materials Science

Cite this

Dikovits, M., Poletti, M. C., Warchomicka, F., Chaudhari, G. P., & Pancholi, V. (2012). Hot deformation study by processing maps of N containing microalloyed steel. In TMS Annual Meeting (pp. 503-510). John Wiley & Sons, Inc. https://doi.org/10.1002/9781118371305.ch58

Hot deformation study by processing maps of N containing microalloyed steel. / Dikovits, M.; Poletti, Maria Cecilia; Warchomicka, F.; Chaudhari, G. P.; Pancholi, V.

TMS Annual Meeting. John Wiley & Sons, Inc, 2012. p. 503-510.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Dikovits, M, Poletti, MC, Warchomicka, F, Chaudhari, GP & Pancholi, V 2012, Hot deformation study by processing maps of N containing microalloyed steel. in TMS Annual Meeting. John Wiley & Sons, Inc, pp. 503-510, TMS 2012, Orlando, Fla., United States, 11/03/12. https://doi.org/10.1002/9781118371305.ch58
Dikovits M, Poletti MC, Warchomicka F, Chaudhari GP, Pancholi V. Hot deformation study by processing maps of N containing microalloyed steel. In TMS Annual Meeting. John Wiley & Sons, Inc. 2012. p. 503-510 https://doi.org/10.1002/9781118371305.ch58
Dikovits, M. ; Poletti, Maria Cecilia ; Warchomicka, F. ; Chaudhari, G. P. ; Pancholi, V. / Hot deformation study by processing maps of N containing microalloyed steel. TMS Annual Meeting. John Wiley & Sons, Inc, 2012. pp. 503-510
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