Elevated corrosion in strain hardened AlMg alloy
By Neetu; Singh, Subhash; Rao, P. Nageshwar; Jayaganathan, R.; Midathada, A.; Verma, Kartikey; Ravella, Uday K.
Published in Vacuum
2018
Abstract
Al-4.17 Mg (Al 5080) alloy was processed by multi axial forging (MAF) at room temperature up to cumulative strain of 4.2 in the present work. Mechanical properties of the alloy were investigated through Vickers hardness test and tensile test. Corrosion studies were carried on standard, forged and forged & annealed samples using 3.5% NaCl solution employing both Potentiodynamic polarization and immersion method. Microstructural evolution was studied on all the three samples using characterization techniques such as optical microscopy, electron backscattered diffraction, scanning electron microscopy and transmission electron microscopy. On a sample subjected to MAF, improvement in the strength and hardness was observed along with the significant drop in the corrosion resistance. However, when the same sample was further annealed, corrosion resistance was not only retained, but improved drastically. This odd behavior of this alloy was never reported earlier. The improved corrosion resistance of this alloy was discussed in light of surface profile along with the microstructural features.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.