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The influence of hot-working conditions on the structure and mechanical properties of forged products of microalloyed steel

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: Results of the effect of thermomechanical processing conditions on the microstructure, mechanical properties and crack resistance are included in the present work. Conditions of forging with the method of thermo-mechanical treatment were developed basing on the analysis of precipitation kinetics of MX interstitial phases in a solid solution, plastometric examinations and investigations of the kinetics of undercooled austenite phase transformations. Design/methodology/approach: Light microscopy and transmission electron microscopy techniques were used to reveal the microstructure of samples obtained as a result of the thermomechanical forging. Mechanical properties and hardness tests as well as resistance to cracking using Charpy V samples at room and lowered temperature were carried out. Findings: Applied thermo-mechanical treatment allows obtaining fine-grained microstructure of austenite during hot-working and production of forged parts, which acquire advantageous set of mechanical properties and guaranteed crack resistance after controlled cooling from finishing plastic deformation temperature and successive tempering. Forgings produced with the method of thermo-mechanical treatment, consecutively subjected to tempering in the temperature range from 550 to 650°C, reveal the values of YS0.2
Rocznik
Strony
28--39
Opis fizyczny
Bibliogr. 30 poz.
Twórcy
autor
  • Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland, marek.opiela@polsl.pl
autor
  • Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland
autor
  • Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland
Bibliografia
  • [1] D. K. Matlock, G. Krauss, J. G. Speer, Microstructures and properties of direct-cooled microalloy forging steels, Journal of Materials Processing and Technology 117 (2001) 324-328.
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  • [5] J. Adamczyk, M. Opiela, Engineering of forged products of microalloyed constructional steels, Journal of Achievements in Materials and Manufacturing Engineering 15/1-2 (2006) 153-158.
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  • [7] B. Eghbali, A. Abdollah-zadeh, Influence of deformation temperature on the ferrite grain refinement in a low carbon Nb-Ti microalloyed steel, Journal of Materials Processing and Technology 180 (2006) 44-48.
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  • [27] M. Jahazi, B. Eghbali, The influence of hot forming conditions on the microstructure and mechanical properties of two microalloyed steels, Journal of Materials Processing and Technology 113 (2001) 594-598.
  • [28] M. Opiela, Analysis of kinetics of precipitation of MX-type interstitial phases in microalloyed steels, Journal of Achievements in Materials and Manufacturing Engineering 47/1 (2011) 7-18.
  • [29] M. Opiela, A. Grajcar, Hot deformation behavior and softening kinetics of Ti-V-B microalloyed steels, Archives of Civil and Mechanical Engineering 12/3 (2012) 327-333.
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-f0bcb09b-3891-41fe-b633-c0c07f20b015
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