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Open AccessArticle

A Partitioning Method for Friction Stir Welded Joint of AA2219 Based on Tensile Test

1
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China
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Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
3
Beijing Institute Astronautical System Engineering, Beijing 100076, China
*
Author to whom correspondence should be addressed.
Metals 2020, 10(1), 65; https://doi.org/10.3390/met10010065
Received: 3 December 2019 / Revised: 25 December 2019 / Accepted: 27 December 2019 / Published: 1 January 2020
The partition of aluminum alloy welded joint often depends on microscopic methods such as scanning electron microscopy before. This paper provides a novel partitioning method, which can obtain the material properties and partition results at the same time based on tensile test. The mechanical properties of every point on the whole welded joint are first obtained by the digital image correlation (DIC) method. Then, the mechanical property function of the weld joint along the weld center is established due to the changes of plastic property and strain hardening exponent at each point and the boundary between different areas is then determined. Metallographic detection technology and nano-mechanical testing techniques are employed to validate this partitioning scheme. The partition result of the strategy proposed in this paper is consistent with the partitioning result of the classical method. Compared to classical method, the proposed partitioning method is more practical and effective, as it can obtain mechanical properties and partition boundary through a single tensile test and reduce the cost of metallographic test. View Full-Text
Keywords: 2219 aluminum alloy; friction stir welded joint; partitioning; mechanical properties 2219 aluminum alloy; friction stir welded joint; partitioning; mechanical properties
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MDPI and ACS Style

Cao, G.; Ren, M.; Zhang, Y.; Peng, W.; Li, T. A Partitioning Method for Friction Stir Welded Joint of AA2219 Based on Tensile Test. Metals 2020, 10, 65.

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