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2019 | OriginalPaper | Chapter

Stationary Shoulder Friction Stir Processing: A Low Heat Input Grain Refinement Technique for Magnesium Alloy

Authors : Vivek Patel, Wenya Li, Quan Wen, Yu Su, Na Li

Published in: Friction Stir Welding and Processing X

Publisher: Springer International Publishing

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Abstract

Stationary shoulder friction stir processing (SSFSP) as a low heat input grain refinement technique is projected in this study. SSFSP can be considered as a variant of friction stir processing (FSP) with modified tooling system. It uses stationary shoulder tool and rotating probe, which helps to reduce heat input in great manner during process. Present work aims to refine grain size in thick AZ31B magnesium alloy using SSFSP without using external cooling at different tool rotational speeds (700–1300 rpm). The smooth surface with little flash without any defect was obtained in all the samples, which had confirmed the wide processing range of SSFSP. Probe-dominated stir zone (SZ) achieved for all rotational speeds, which confirmed smaller temperature gradient throughout the SZ thickness. SZ produced at the lowest rotational speed (700 rpm) exhibited reduction in grain size and subsequently enhancement in mechanical properties (hardness and tensile).

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Title: Stationary Shoulder Friction Stir Processing: A Low Heat Input Grain Refinement Technique for Magnesium Alloy
Authors: Vivek Patel
Wenya Li
Quan Wen
Yu Su
Na Li
Publisher: Springer International Publishing
Book: Friction Stir Welding and Processing X
Print ISBN: 978-3-030-05751-0

Electronic ISBN: 978-3-030-05752-7

Copyright Year: 2019
DOI: https://doi.org/10.1007/978-3-030-05752-7_20

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