Pengaruh penambahan % Sr terhadap karakteritik komposit Al2O3/A356 dengan penambahan grain refiner (Al-TiB) dan Mg dengan metode pengecoran aduk = Effect of % Sr addition on composite characteristic Al2O3/A356 with grain refiner (Al-TiB) and Mg produce by stir casting method - Tira Kurnia Saputri, author (2016)