A Process Development Study on Reducing the Anisotropy while Maintaining the Strength of Extruded Aluminum Alloy 2195 through Heat Treatment

Author(s) Information

Theodore James Arehart, California Polytechnic State University - San Luis ObispoFollow

Department - Author 1

Materials Engineering Department

Degree Name - Author 1

BS in Materials Engineering

Date

6-2014

Primary Advisor

Blair London

Abstract/Summary

The purpose of this study was two-fold: develop an aging curve for extruded 2195 aluminum and test the magnitude of the anisotropy in the extrusion throughout the aging process. Two aging curves were developed, one at 290^oF and the other at 320^oF, through hardness tests of aged samples. The hardness was found to change, from approximately 72 HRB to 90 HRB, within the first 6 hours and not change more than 2 HRB in the 42 hours following. It was determined that the 320^oF temperature was more promising due to faster aging time, and the anisotropy study proceeded with that temperature. Samples were aged at 320^oF for 6, 18, 28, and 48 hours and tensile tested. These aging times were chosen due to interesting characteristics found during aging. The researchers measured yield strength to determine the magnitude of the anisotropy throughout the aging time.

URL: https://digitalcommons.calpoly.edu/matesp/95