Fatigue Property of Friction Stir Welded Butt Joints for 6156-T6 Aluminum Alloy

An Chen; Jun Yang; Xian Min Chen; Deng Ke Dong

doi:10.4028/www.scientific.net/MSF.960.45

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HomeMaterials Science ForumMaterials Science Forum Vol. 960Fatigue Property of Friction Stir Welded Butt...

Fatigue Property of Friction Stir Welded Butt Joints for 6156-T6 Aluminum Alloy

Abstract:

This study was conducted to investigate fatigue behavior of friction stir welding (FSW) butt joints for 6156-T6 aluminum alloy. The detail fatigue rating (DFR) values of 6156-T6 FSW joints is obtained based on statistical analysis of fatigue tests. The micrographs of weld structure were observed by optical microscope (OM), Fatigue fractography was researched under scanning electron microscope (SEM). The results indicate that DFR value of 6156-T6 FSW joints is 153.31MPa. Fatigue property of FSW butt joints is sensitive to the microstructural features, such as nugget zone (NZ), thermo mechanically affected zone (TMAZ) and heat affected zone (HAZ). The hardness distributions of the FSW joints reveal W-shaped profiles. Fractography shows that fatigue cracking is initiated at weak-bonding defects, which are located at the root site of the butt joint. The weak-bonding defects have obvious influence on the fatigue properties of friction stir welding.

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Periodical:

Materials Science Forum (Volume 960)

Pages:

45-50

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.960.45

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Online since:

June 2019

Authors:

An Chen*, Jun Yang, Xian Min Chen, Deng Ke Dong

Keywords:

6156-T6 Aluminum Alloy, Detail Fatigue Rating (DFR), Fractography, Friction Stir Welding (FSW), Micrograph

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References

[1] Thomas W M, Nicholas E D, Needham J C, Murch M G, Temple-Smith P, Dawes C J. G.B. Patent Application No. 9125978.8; (1991).

Google Scholar

[2] Mishra R S, Ma Z Y. Friction stir welding and processing. Materials Science and Engineering R 2005; 50(1-2):1-78.

Google Scholar

[3] J.D. Costa, J.A.M. Ferreira, L.P. Borrego, L.P. Abreu. Fatigue behaviour of AA6082 friction stir welds under variable loadings. International Journal of Fatigue 2012 (37): 8-16.

DOI: 10.1016/j.ijfatigue.2011.10.001

Google Scholar

[4] Manabu N, Takehiko E. New aspects of development of high strength aluminum alloys for aerospace applications. Materials Science and Engineering A, 2000, 285 (1): 62-68.

Google Scholar

[5] Zhang H F, Zheng Z Q, Zhong S, Luo X F, Zhong J. Effects of two-step aging treatment on microstructure and properties of 6156 aluminum alloy. The Chinese Journal of Nonferrous Metals, 2012, 22(4): 1025-1032.

Google Scholar

[6] Chen A, Yang J, Zhang K, Zhang H Y. Fatigue Reliability Analysis of 6156-T6 Riveted Joints Based on Detail Fatigue Rating. Materials Science and Engineering 2017, (269) 012045.

DOI: 10.1088/1757-899x/269/1/012045

Google Scholar

[7] Chen A, Li S S, Dong D K, Xu F. Studying Detail Fatigue Rating of Two New Aluminum-lithium Alloys Riveted Structures. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(3):489-492.

Google Scholar