Effect Of Austempering Process Parameters On The Mechanical Properties Of Mild Steel Quenched In A Mixture Of Used Engine Oil And Ash:- Okeke, Chiagozie I
ABSTRACT
The study
was aimed at enhancing the utilization of a blend ofrecycled engine oil and ash
as an appropriate quenchant for the austempering heat treatment of mild steel.
The objectives of the study were to utilize Response Surface Methodology to
create a model for efficient use of the mixture as a quenchant, determine the
optimal process parameters (time and temperature) for austempering with the
mixture and develop a predictive model to guide the austempering process in
achieving specific desired properties in mild steel. The experimental was designed
with Minitab resulting to 27 experimental runs. The independent variables were
temperature and time to determine the hardness, impact energy and maximum load.
The result showed that maximum hardness of 190BHN, impact energy ofllOJ and
maximum load of 6500W. The optimization studied gave hardness value of 176.870,
impact energy of 60.1852 and maximum load of 5964.81 at temperature of 870°C
and time of27.7773mins with desirability of 1. It was concluded from the
studies that using the optimal austempering time and temperature for achieving
specific mechanical properties suitable for a particular application can save
cost ofproduction by reducing energy cost
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-- (2026). Effect Of Austempering Process Parameters On The Mechanical Properties Of Mild Steel Quenched In A Mixture Of Used Engine Oil And Ash:- Okeke, Chiagozie I. Mouau.afribary.org: Retrieved Mar 24, 2026, from https://repository.mouau.edu.ng/work/view/effect-of-austempering-process-parameters-on-the-mechanical-properties-of-mild-steel-quenched-in-a-mixture-of-used-engine-oil-and-ash-okeke-chiagozie-i-7-2
--. "Effect Of Austempering Process Parameters On The Mechanical Properties Of Mild Steel Quenched In A Mixture Of Used Engine Oil And Ash:- Okeke, Chiagozie I" Mouau.afribary.org. Mouau.afribary.org, 24 Mar. 2026, https://repository.mouau.edu.ng/work/view/effect-of-austempering-process-parameters-on-the-mechanical-properties-of-mild-steel-quenched-in-a-mixture-of-used-engine-oil-and-ash-okeke-chiagozie-i-7-2. Accessed 24 Mar. 2026.
--. "Effect Of Austempering Process Parameters On The Mechanical Properties Of Mild Steel Quenched In A Mixture Of Used Engine Oil And Ash:- Okeke, Chiagozie I". Mouau.afribary.org, Mouau.afribary.org, 24 Mar. 2026. Web. 24 Mar. 2026. < https://repository.mouau.edu.ng/work/view/effect-of-austempering-process-parameters-on-the-mechanical-properties-of-mild-steel-quenched-in-a-mixture-of-used-engine-oil-and-ash-okeke-chiagozie-i-7-2 >.
--. "Effect Of Austempering Process Parameters On The Mechanical Properties Of Mild Steel Quenched In A Mixture Of Used Engine Oil And Ash:- Okeke, Chiagozie I" Mouau.afribary.org (2026). Accessed 24 Mar. 2026. https://repository.mouau.edu.ng/work/view/effect-of-austempering-process-parameters-on-the-mechanical-properties-of-mild-steel-quenched-in-a-mixture-of-used-engine-oil-and-ash-okeke-chiagozie-i-7-2