BibTeX:

@article{IJIRSTV3I11095,
     title={Effect of Mg Addition on the Microstructure, Secondary Dendritic Arm Spacing and Hardness of A356 Al Alloy},
     author={Dr. Cherian Paul, Joel George Thomas, Arun U, Justin Joseph George and Anandhu A S},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={3},
     number={11},
     pages={322--327},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV3I11095.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

An investigation was carried out to understand the effect of Mg addition on the dendritic arm spacing and hardness of A356 aluminium alloy. The effect of Mg content was assessed by melting the A356 Al alloy in a muffle furnace with the addition of varying weight percentage Mg (1, 1.5, 2.5, 3.5 % wt) and casting in both permanent metal die and sand mould. It was observed that the secondary dendritic arm spacing reduces with Mg content concluding that Mg addition improves the formation of nucleation sites and thereby results in grain refinement. The Brinell hardness tester was used to measure the hardness of the alloy. It was found that the hardness increased with Mg content and comparatively, die cast samples showed improved hardness when compared with that of sand cast samples.

Al-Mg Alloys, Dendrites, Hardness, Microstructure, SDAS