Paper Information

Journal:   JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)   December 2003 , Volume 37 , Number 3 (81); Page(s) 435 To 443.
 
Paper: 

THE EFFECT OF TEMPERATURE, INITIAL MICROSTRUCTURE AND CHEMICAL COMPOSITION ON THE FATIGUE PROPERTIES OF VANADIUM-MICROALLOYED STEELS

 
 
Author(s):  GHORBANI J., ZAREI HANZAKI A., SHAH HOSSEINI M.H., GOL MAHALEH O.
 
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Abstract: 

As is well accepted, any heavy duty parts of a vehicle, such as suspension and transmission systems, should be made of special grades of micro alloyed steels. In addition the experience is shown that the temperature of these parts may locally rise up to about 200 °C. In the present work, relying on the in-house steel making potential, a series of vanadium microalloyed steels were prepared and successively heat treated to obtain different desired multi-phase microstructures. The related fatigue properties were then examined to investigate the effects of material and process variables. The results indicate that the increase of temperature would result in strain aging phenomena and this in turn may lead to higher fatigue life in ferrite-marten site dual phase microstructure.

 
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