The 7000 series aluminum alloys provide the highest strength of all aluminum alloys and are widely used in the aerospace industries. They are practically unweldable by conventional fusion welding techniques. Friction stir welding is a widely accepted process to join this material. The paper intends to evaluate the electrochemical behavior of friction-stir-welded AA 7075-T651 alloy under varying welding conditions. An attempt has been made to evaluate the effect of tool rotation speed, welding speed, and shoulder diameter on its corrosion characteristics. The temperature histories during welding were continuously recorded with the help of thermocouples. The corrosion characteristics have been examined as per ASTM G-34 standards. The analysis is done by immersing the plates in EXCO solution and analyzing through optical imaging, SEM and TEM. The analysis revealed that the heat-affected zone was found to be most susceptible to corrosion. The corrosion resistance is found in the order—weld nugget > unwelded base metal > HAZ. The experiments revealed that the corrosion resistance of the welded plates is directly proportional to the heat input during the welding process. The plates welded with lower tool rotation speed, higher welding speed, and lower shoulder diameter exhibited higher corrosion resistance.
Metallography, Microstructure, and Analysis – Springer Journals
Published: Apr 12, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera