Influence of ultrasonic shot peening on corrosion behavior of 7075 aluminum alloy
By Pandey, Vaibhav; Singh, J. K.; Chattopadhyay, K.; Srinivas, N. C. Santhi; Singh, Vakil
Published in Journal of Alloys and Compounds
NULL
2017
Abstract
Abstract This investigation addresses the effect of surface nanostructure developed through ultrasonic shot peening (USSP) on corrosion behavior of 7075 aluminum alloy. {USSP} develops surface nanostructure, induces severe plastic deformation, refines grain size up to certain depth and imparts compressive residual stress in the surface region. The sample {USSPed} for 15 s (USSP 15) exhibited lower current density (0.564 ?A/cm2) and higher corrosion potential (?0.695 V) as compared with that of the un-USSP specimen with 1.269 ?A/cm2 and -0.839 V respectively. The enhancement in corrosion resistance of {USSPed} sample is due to rapid development of uniform, homogeneous and effective passive layer on the nano-structured surface coupled with refinement of the coarse precipitates. Also, there is optimum combination of surface roughness, compressive residual stress, and dislocation density in the surface region to produce highest corrosion resistance in the {USSP} 15 condition.
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.