Microstructure and Mechanical Properties of Friction Stir Welded Al-Zn-Mg-Cu Alloy

Sheng Dan Liu; Yun Dai; Yu Long Wu; Bin Chen; Xin Ming Zhang

doi:10.4028/www.scientific.net/AMM.628.7

Paper Titles

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Microstructure and Mechanical Properties of Friction Stir Welded Al-Zn-Mg-Cu Alloy
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The Existence Form and Distribution of Mn in Production of Tungsten Products
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 628Microstructure and Mechanical Properties of...

Microstructure and Mechanical Properties of Friction Stir Welded Al-Zn-Mg-Cu Alloy

Abstract:

The microstructure and mechanical properties of friction stir welded Al-Zn-Mg-Cu alloy sheet were investigated by means of hardness and tensile tests, optical microscope and scanning electron microscope. The hardness profile of the weld exhibits a W shape with the lowest value in the thermo-mechanically affected zone on the advancing side. The tensile strength and elongation of the weld are about 71% and 72% that of the base material. In the nugget zone, there are a number of fine recrystallized grains and dispersed precipitates at grain boundaries. In the thermo-mechanically affected zone, the grain size is not uniform and there are a number of precipitates at grain boundaries. In the heat affected zone, the grain structure is similar to the base material.

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Periodical:

Applied Mechanics and Materials (Volume 628)

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7-11

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.628.7

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Online since:

September 2014

Authors:

Sheng Dan Liu*, Yun Dai, Yu Long Wu, Bin Chen, Xin Ming Zhang

Keywords:

Al-Zn-Mg-Cu Alloy, Friction Stir Welding, Mechanical Property, Microstructure

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