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Static Analysis of Functionally Graded Plate Using Nonlinear Classical Plate Theory with von Karman Strains: A Complex Solution Analysis Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Effects of Post-weld Heat Treatment on Microstructure and Mechanical Behavior of Friction Stir Welded Thick Section Al–Zn–Mg–Cu Alloy

Authors : T. Ramakrishna, S. Srinivasa Rao, G. Swami Naidu

Published in: Advances in Engineering Design

Publisher: Springer Singapore

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Abstract

Friction stir welding is considered to be a promising solution to successfully join high strength 7000 series aluminum alloys. However, questions related to a decrease in weld mechanical properties with an increase in plate thickness still remain unanswered. In this study, 16 mm thick AA7075–T651 aluminum alloy plates were successfully joined by friction stir welding. The welds were heat treated using a special solutionizing method called cyclic solution treatment (CST). The effects of CST on mechanical behavior and microstructures of the welds were studied using hardness, tensile, and impact tests and optical microscopy. The post-weld heat treatment significantly improves the hardness of the joint and homogenizes the hardness distribution across the welded joint. However, the tensile properties and impact toughness of the welds were not found to be beneficially affected. A significant grain growth in the weld nugget was observed after CST.

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previous chapter Modelling, Fabrication and Characterization of Kevlar Reinforced Composite
next chapter Temperature and Traverse Force Analysis During Underwater Friction Stir Welding
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Metadata
Title
Effects of Post-weld Heat Treatment on Microstructure and Mechanical Behavior of Friction Stir Welded Thick Section Al–Zn–Mg–Cu Alloy
Authors
T. Ramakrishna
S. Srinivasa Rao
G. Swami Naidu
Copyright Year
2019
Publisher
Springer Singapore
Book
Advances in Engineering Design

Print ISBN: 978-981-13-6468-6

Electronic ISBN: 978-981-13-6469-3

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-981-13-6469-3_3

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