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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Doddapaneni, Srinivas
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Publications (3/3 displayed)
- 2023Prediction of age-hardening behaviour of LM4 and its composites using artificial neural networkscitations
- 2022OPTIMIZATION AND PREDICTION OF THE HARDNESS BEHAVIOUR OF LM4 + SI3N4 COMPOSITES USING RSM AND ANN - A COMPARATIVE STUDYcitations
- 2022Optimization of preheating temperature for TiB<sub>2</sub> reinforcement on the preparation of stir cast LM4 + TiB<sub>2</sub> composites and effect of artificial aging on hardness improvement using ANOVAcitations
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article
Optimization of preheating temperature for TiB<sub>2</sub> reinforcement on the preparation of stir cast LM4 + TiB<sub>2</sub> composites and effect of artificial aging on hardness improvement using ANOVA
Abstract
<jats:p>This work emphasizes the optimization of preheating temperature of TiB<jats:sub>2</jats:sub> reinforcement powder with LM4 composites, and statistical analysis for predicting hardness improvement during aging treatment using ANOVA, are illustrated in this article. A two-stage stir casting procedure was used to fabricate LM4 + TiB<jats:sub>2</jats:sub> (1, 2 and 3 wt.%) composites. The impact of preheating TiB<jats:sub>2</jats:sub> reinforcement powder at various temperatures such as 600, 500, 450, 350 and 250 °C, to attain uniform distribution of reinforcements in the matrix was studied. Optical microstructure analysis clearly shows that the optimum preheating temperature of TiB<jats:sub>2</jats:sub> powder for effective preparation of composites is 350 °C for 30 min without agglomeration of reinforcement particles. After successful preparation of composites, the as-cast samples were subjected to single-stage and multistage solutionizing treatments and then artificially aged at 100 and 200 °C to obtain peak hardness. Micro Vickers Hardness test was done to calculate the hardness of both age hardened LM4 alloy and its composites and results were analyzed. An increase in wt.% of TiB<jats:sub>2</jats:sub> (1–3%), the hardness of composites increased, and multistage solutionizing treatment followed by artificial aging at 100 °C was proven to achieve the highest peak hardness value for LM4 + 3 wt.% TiB<jats:sub>2</jats:sub> composites. Compared to as-cast LM4 alloy, 80–150% increase in hardness was observed when aged at 100 °C and 65–120% increase in hardness was observed at 200 °C during SSHT and MSHT, respectively. ANOVA was performed with wt.%, solutionizing type, aging temperatures as factors, and peak hardness as the outcome. From the results, it can confirm that all three factors contributed effectively for achieving the peak hardness. <jats:italic>R</jats:italic><jats:sup>2</jats:sup> value validates that the factors account for 100% of the variance in the hardness results.</jats:p>