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Investigation on the effects of hot forging parameters on the austenite grain size of vanadium microalloyed forging steel (30MSV6)

Babakhani, A ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jallcom.2009.10.083
  3. Publisher: 2010
  4. Abstract:
  5. It is known that the thermomechanical processing is one of the most important techniques for improving quality and mechanical properties of microalloyed steels. In this paper, the main parameters of hot forging (preheat temperature, strain and post-forging cooling rate) on the primary austenite grain size of vanadium microalloyed steel (30MSV6) were studied. From this investigation, it was found that increasing preheat temperature from 1150 °C to 1300 °C will result in a decrease in grain size number. Furthermore, it has shown that as the strain increases, the austenite grain size number increases, as is evident for the two cooling rates of 2.5 °C/s and 1.5 °C/s for primary austenite. Finally, it can be concluded that a verity of microstructures in microalloyed steels can be obtained depending on the deformation temperature and cooling rate
  6. Keywords:
  7. Metallography ; Austenite grain size ; Cooling rates ; Deformation temperatures ; Forging steel ; Grain size ; Hot forging ; Main parameters ; Microalloyed Steel ; Preheat temperature ; Primary austenite ; Thermo-mechanical processing ; Vanadium microalloyed steel ; Cooling ; Dendrites (metallography) ; Forging machines ; Forgings ; Grain boundaries ; Grain size and shape ; Martensitic stainless steel ; Mechanical properties ; Metal analysis ; Microstructure ; Preheating ; Steel metallography ; Vanadium ; Vanadium alloys ; Wear resistance ; Austenite
  8. Source: Journal of Alloys and Compounds ; Volume 490, Issue 1-2 , February , 2010 , Pages 572-575 ; 09258388 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0925838809020593?np=y&npKey=448b2169b0e329260e08051e99412dfc503eb989412b4c2dff696d38c874f0d8