“Heat Treatment Effect on the Hardness of Aluminium LM13 – MgO Particulate Composite”. 2018. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695 IJERAT 4 (1): 20-24. https://doi.org/10.7324/IJERAT.2018.3180.