Prediction of hardness minimum locations during natural aging in an aluminum alloy 6061-T6 friction stir weld

被引：0

作者：

W. Woo

H. Choo

P. J. Withers

Z. Feng

机构：

[1] Korea Atomic Energy Research Institute,Neutron Science Division

[2] The University of Tennessee,Department of Materials Science and Engineering

[3] University of Manchester,Manchester Materials Science Center

[4] Oak Ridge National Laboratory,Materials Science and Technology Division

来源：

Journal of Materials Science | 2009年 / 44卷

关键词：

Friction Stir Welding; Friction Stir Welding; Natural Aging; Hardness Profile; Tool Shoulder;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This study describes a method that can predict the hardness minimum location as a function of natural aging time in a heat-treatable 6061-T6 Al alloy plate subjected to friction stir welding (FSW). First, temperature distributions were simulated in the FSW plate by finite element modeling. Second, to determine the natural aging kinetics, hardness changes were measured as a function of natural aging time from a number of Al specimens that had been isothermally heat treated at different peak temperatures. Finally, the simulated temperature profiles and the natural aging kinetics were correlated to predict the hardness profiles in the FSW plate. The predicted hardness minimum locations are consistent with the measured hardness profiles in that the hardness moves away from the weld centerline as the aging time increases. Moreover, the predicted hardness minimum is located at the similar position of failure in cross-weld tensile samples.

引用

页码：6302 / 6309

页数：7

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