Cold sprayed Al 6061 alloy test samples were heat treated at several solutionizing and aging temperatures, and aging times to determine the effect of heat treatment on microstructure and hardness. Vickers and Knoop microhardness values as well as scanning electron microscope images were compared to determine the effects of heat treatments on the hardness and microstructure. Overall the heat treatments caused a decrease in hardness values in all of the samples, with the largest decrease being 47% from the as sprayed control sample. The highest hardness value and largest growth of precipitates was recorded after 1 hour of heat treatment at 200°C with a growth in precipitates of approximately 30%.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• Ketschke, Lauren Elizabeth
• McNally, Baillie Rae
• Kelley, Caitlin Elizabeth

Publisher

• Worcester Polytechnic Institute

Identifier

• E-project-042612-122805

Advisor

• Sisson, Richard D.

Year

• 2012

Sponsor

• United States Army Research Lab

Date created

• 2012-04-26

Location

• Worcester

Resource type

• Major Qualifying Project

Major

• Mechanical Engineering

Rights statement

• In Copyright