Exquisite Al-Si alloy metallographic duab

 

Deformed grain qauv ntawm 99.999% Al;
Barker's Reagent, Polarized Teeb

     

Al-1% Si as-cast specimen nrog Si hais hauv ib qho α-Al matrix;"Si Blue" etch

Al-7.12% Si, as-cam khwb cia, nrog thawj α-Al dendrites thiab ib qho a-Al/Si eutectic;"Si Blue" etch

Al -11.7% Si, as-cam khwb cia, nrog thawj a-Al dendrites thiab ib qho α-Al/Si eutectic;"Si Blue" etch

Al -12% Si, as-cast, ze eutectic, "Si Blue" etch

AI -12% Si, as-cam khwb cia, ze eutectic;Weck's Reagent, Polarized Teeb

Na-Modified Al - 12% Si, as-cam khwb cia, ze eutectic, "Si Blue" etch

Na-Modified Al -12% Si, as-cam khwb cia, ze eutectic Weck's Reagent, Polarized Teeb

Al - 12.9% Si, lub ntiajteb txawj nqus tuag casting, "Si Blue" etch

Al- 12.9% Si-0.04% Sr, lub ntiajteb txawj nqus tuag casting, "Si Blue" etch

Al-19.85% Si, as-cast, hypereutectic, thawj Si ntxiv rau eutectic, Weck's Reagent -eutectic cells, 200X

Al-25% Si, as-cam khwb cia, hypereutectic, thawj Si thiab α-Al/Si eutectic, Weck's Reagent

Al - 50% Si, as-cam khwb cia, tawg thawj Si thiab eutectic, "Si Blue" etch

Ntxaib hauv polycrystalline 99.9999% Si, as-cam khwb cia aqueous 75% NaOH, Nomarski DIC

AI-SIi Phaj Diagram