Next Article in Journal
Hydrogen Assisted Fracture of 30MnB5 High Strength Steel: A Case Study
Next Article in Special Issue
Effects of Aluminum Foam Filling on Compressive Strength and Energy Absorption of Metallic Y-Shape Cored Sandwich Panel
Previous Article in Journal
Evaluation of Stationary Creep Rate in Heat-Affected Zone of Martensitic 9–12% Cr Steels
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Metals
Volume 10
Issue 12
10.3390/met10121610
metals-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Tensile and Fatigue Analysis Based on Microstructure and Strain Distribution for 7075 Aluminum FSW Joints

by
Guoqin Sun
1,*,
Xinhai Wei
1,
Deguang Shang
1,
Shujun Chen
1,
Lianchun Long
1 and
Xiuquan Han
2
1
Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
2
AVIC Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China
*
Author to whom correspondence should be addressed.
Metals 2020, 10(12), 1610; https://doi.org/10.3390/met10121610
Submission received: 26 October 2020 / Revised: 20 November 2020 / Accepted: 25 November 2020 / Published: 30 November 2020
(This article belongs to the Special Issue Fracture and Failure of Advanced Metallic Materials)
Browse Figures
Versions Notes

Abstract

In order to study on tensile and fatigue fracture mechanism of friction stir welded (FSW) joints, the tensile and fatigue behavior of FSW joints are studied based on the microstructure and strain distribution. The large plastic deformation and fracture occurred in the thermo-mechanically affected zone (TMAZ) on retreating side in tension tests. High contents of shear texture and small angle grain boundary reduce the tensile mechanical property of TMAZ material. The fatigue weak area for FSW joints is affected by the loading condition. The strain concentration in the welded nugget zone (WNZ) and base material makes the fatigue fracture liable to happen in these areas for the FSW joints under the stress ratios of 0.1 and −0.3. When the fracture occurred in WNZ, the crack initiation mainly occurred in clusters of hardened particles, while when the fracture happened in base material, the crack initiation mainly occurred near the pit. The crack in WNZ propagated in an intergranular pattern and the crack in the other areas extended in a transgranular mode, leading to a higher crack growth rate of WNZ than of other regions.
Keywords: friction stir welding; microstructure; strain concentration; fracture location; crack propagation friction stir welding; microstructure; strain concentration; fracture location; crack propagation

Share and Cite

MDPI and ACS Style

Sun, G.; Wei, X.; Shang, D.; Chen, S.; Long, L.; Han, X. Tensile and Fatigue Analysis Based on Microstructure and Strain Distribution for 7075 Aluminum FSW Joints. Metals 2020, 10, 1610. https://doi.org/10.3390/met10121610

AMA Style

Sun G, Wei X, Shang D, Chen S, Long L, Han X. Tensile and Fatigue Analysis Based on Microstructure and Strain Distribution for 7075 Aluminum FSW Joints. Metals. 2020; 10(12):1610. https://doi.org/10.3390/met10121610

Chicago/Turabian Style

Sun, Guoqin, Xinhai Wei, Deguang Shang, Shujun Chen, Lianchun Long, and Xiuquan Han. 2020. "Tensile and Fatigue Analysis Based on Microstructure and Strain Distribution for 7075 Aluminum FSW Joints" Metals 10, no. 12: 1610. https://doi.org/10.3390/met10121610

APA Style

Sun, G., Wei, X., Shang, D., Chen, S., Long, L., & Han, X. (2020). Tensile and Fatigue Analysis Based on Microstructure and Strain Distribution for 7075 Aluminum FSW Joints. Metals, 10(12), 1610. https://doi.org/10.3390/met10121610

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop