MODELING OF MICROSTRUCTURAL EVOLUTION IN MICROALLOYED STEEL DURING HOT FORGING PROCESS

金属学报(英文版), 2006, 19(4): 279-286.

^1, , ^2, , ^3, , ^4,

1.National Die & Mold CAD Engineering Research Center, Shanghai Jiaotong University, Shanghai 200030, China

2.National Die & Mold CAD Engineering Research Center, Shanghai Jiaotong University, Shanghai 200030, China

3.National Die & Mold CAD Engineering Research Center, Shanghai Jiaotong University, Shanghai 200030, China

4.National Die & Mold CAD Engineering Research Center, Shanghai Jiaotong University, Shanghai 200030, China

基金项目: 国家自然科学基金(50275094)

MODELING OF MICROSTRUCTURAL EVOLUTION IN MICROALLOYED STEEL DURING HOT FORGING PROCESS

Keywords： microalloyed forging steel

The microstructural evolution of microalloyed steel during hot forging process was investigated using physical simulation experiments. The dynamic recrystallized fraction was described by modifying Avrami's equation, the parameters of which were determined by single hit compression tests. Double hit compression tests were performed to model the equation describing the static recrystallized fraction, and the obtained predicted values were in good agreement with the measured values. Austenitic grain growth was modeled as: Dinc5=D05 +1.6×1032t·exp(-716870/RT) using isothermal tests. Furthermore, an equation describing the dynamic recrystallized grain size was given as Ddyn=3771·Z-0.2.The models of microstructural evolution could be applied to the numerical simulation of hot forging.

参考文献

[1]	C A Hernandez;S F Medina;J Ruiz .[J].Acta Materialia,1996,44:155.
[2]	P D Hodgson;R K Gibbs .[J].ISIJ International,1992,32:1329.
[3]	S. I. Kim;Y. Lee;S. M. Byon .Study on constitutive relation of AISI 4140 steel subject to large strain at elevated temperatures[J].Journal of Materials Processing Technology,2003(1/3):84-89.
[4]	A Laasraoui;J J Jonas .[J].Metallurgical and Materials Transactions,1991,22A:1545.
[5]	S. F. MEDINA;J. E. MANCILLA .Static Recrystallization Modelling of Hot Deformed Steels Containing Several Alloying Elements[J].ISIJ International,1996(8):1070-1076.
[6]	C M Sellars;J A Whiteman .[J].Metal Science Journal,1979,13:187.
[7]	S Serajzadeh;T A Karimi .[J].Mechanics Research Communications,2003,30:87.
[8]	H L Andrade;M G Akben;J J Jonas .[J].Metallurgical and Materials Transactions,1983,14A:1967.
[9]	M El Wahabi;J M Cabrera;J M Prado .[J].Materials Science and Engineering,2003,A343:116.
[10]	L. X. Kong;P. D. Hodgson;B. Wang .Development of constitutive models for metal forming with cyclic strain softening[J].Journal of Materials Processing Technology,1999(0):44-50.
[11]	R Colas .[J].Journal of Materials Processing Technology,1996,62:180.

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MODELING OF MICROSTRUCTURAL EVOLUTION IN MICROALLOYED STEEL DURING HOT FORGING PROCESS

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