Effect Of Post Weld Heat Treatment On Micro Structure & Corrosion Behavior Of Aa 7075 Friction Stir Welds
Journal Title: International Journal of Science Engineering and Advance Technology - Year 2016, Vol 4, Issue 6
Abstract
Aluminum AL7075 alloy is an attractive option for aerospace components in naval and defence applications due to its corrosion resistance and absence of melting related problems. This project reports the effects of post weld heat treatments, namely Peak age treatment and Retrogression and reaging on microstructure and mechanical properties of 12 mm thick friction stir welded joints of high strength AA7075 aluminum alloy. Welds were characterized for metallo graphy to carry out the micro structural studies using Optical Microscopy, hardness measurements were done using Vickers hardness tester. Potentio-dynamic polarization tests were carried out to determine the pitting corrosion behavior done using a basic electrochemical system. The results show that welds under peak age treatment (T-6) exhibit better mechanical properties compared to RRA treatment. Welds under Retrogression and reaging exhibit better corrosion resistance with marginal decrease in strength and which is attributed to the micro structural changes observed in both the weld joints.
Authors and Affiliations
R Chandra Sekhar Gubbala| Assistant Professor, Aditya Engineering College, Surampalem, Department of Mechanical Engineering, Akkaiah Nandigam| Assistant Professor, Anurag Engineering College, Kodad, Department of Mechanical Engineering, Arumulla Suresh| Assistant Professor, Anurag Engineering College, Kodad, Department of Mechanical Engineering
Keywords
Related Articles
- EP ID EP16761
- DOI -
- Views 311
- Downloads 8
A Study on properties of Coconut Oil and shells, an alternative to Regular Aggregate in Concrete
"Sustainable" is being to a great degree fundamental around the globe. The example goes past the demonstration of configuration and construction, since the recognition with the present people is a critical variable f...
Message Endorsement and Informant Confidentiality In Wireless Set of Connections
Privacy and security to the information is really given by verification. Verification includes the certain distinguishing proof of one gathering by another gathering or a procedure of affirming a personality .But now...
A Passive LC Filter Based Harmonic Compensation for Multilevel Cascaded Inverters under Unbalanced DC Sources Using NVM Control Technique
This paper proposes passive lc filter network based multilevel cascaded inverters with pulse width-modulation strategy to achieve balanced line-toline output voltages and to maximize the modulation index in the linear...
Protection Tolerate Access Manipulate Procedure for Relational Data
In general, security is accomplished at the expense of accuracy of approved information. In this paper, we propose a productive access control strategy. I this technique for anonymization calculations and show experi...
Opinion Analyzer over the Web
Opinion Analyzer over the Web is a phenomena for calculating opinion strength or attitude related to the discussion undergoing topic. It recognize and drew out related information in source materials, which, in our da...