High Pressure Response of Additively Manufactured AlSi10Mg

Additive manufacturing (AM) is a rapidly emerging technology with the potential to expedite current engineering design processes. However, the AM process does not always lend itself to traditional engineering alloys. Often, unique alloy compositions are used to improve the AM process. A common example is AlSi10Mg, which uses high Si content to lower its melting point, improve fluidity, and reduce thermal expansion. In this work, we present a synergistic study using shockless compression on Sandia National Laboratories' Z machine and structural x-ray diffraction (XRD) measurements at high-pressures in a diamond anvil cell (DAC) at the High Pressure Collaborative Access Team (HPCAT) on AM AlSi10Mg to quantify its high pressure thermodynamic response. We find that the pressure-induced phase transitions present in Si alter the bulk response of the AM AlSi10Mg alloy.