The effect of heat treatment on microstructure and mechanical properties of steels. | [Journal of Engineering and Applied Sciences • 1998]

Author(s):

1. Saeed Javid Tajik: Mechanical Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

2. M. Masud Ahmad: Mechanical Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

3. Iftikhar Ahmad: Mechanical Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

4. Jehanzeb Khan: Mechanical Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

Abstract:

The effect of cooling rates on the mechanical properties of two grades of steel subjected to heating to 940°C and 760°C is discussed. In ferrite/pearlite steels increased rate of cooling raised the ultimate strength of the material. An increase in the ultimate strength from 6.9 KN to 12.42 KN was obtained for 0.21% Carbon steel and 15 to 19.8 KN for 0.28% Carbon steel. A similar trend in ductility has also been observed. An increase in the cooling rate from 25°C/min to 50°C/min resulted in grain size refinement by 1 mm-la for both grades of steel.

Page(s): 113-116

DOI: DOI not available

Published: Journal: Journal of Engineering and Applied Sciences, Volume: 17, Issue: 2, Year: 1998

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