|About this Abstract
||Materials Science & Technology 2019
||Corrosion of Additively Manufactured Metals
||Surface Damage of an AM-AlSi10Mg Alloy Exposed to Corrosive Environments with Lack of Fusion Defects and Powder Contamination
||Daniel Bogen, Holly Martin, Varthula De Silva Jayasekera, Brett Conner
|On-Site Speaker (Planned)
Laser powder bed fusion additive manufacturing can be used to create aerospace replacement parts. However, rogue processing conditions can produce defects at or near the surface. Two processing conditions of concern in this research are 1.) laser processing parameters that produce lack of fusion defects and 2.) inadvertent powder contamination. Lack of fusion defects can lead to a concentration of corrosive ions and increased damage. Powder contamination, potentially occurring when changing metal powders, can lead to an increase in corrosion, by creating galvanic cells. Determining how the effect of these defects on the metal in corrosive environments is vital, especially for parts planned for critical or long-term applications. The research presented here will detail the effects of corrosive environments on baseline material, material containing lack of fusion defects, and powder contamination samples to determine the type and extent of corrosive damage, which could result in unacceptable performance.
||Definite: At-meeting proceedings