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Effect of Single Stage Aging on Microstructure and Properties of Rare Earth Electrical Round Aluminum Rods |
Received:July 13, 2017 Revised:August 19, 2017 |
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DOI: |
KeyWord:Aluminum alloy electric round rod; single stage aging; electric conductivity; tensile strength |
Author | Institution |
yanjun |
贵州大学 材料与冶金学院 贵阳 贵州 |
leiyuanyuan |
贵州大学 材料与冶金学院 贵阳 贵州 |
zhangxiaoyan |
贵州大学 材料与冶金学院 贵阳 贵州 |
HU Xie-jun |
贵州大学 材料与冶金学院 贵阳 贵州 |
LIN Ting-yi |
贵州大学 材料与冶金学院 贵阳 贵州 |
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Abstract: |
The effects of aging temperature and aging time on the mechanical properties and electrical conductivity of the alloy were studied. The microstructures of the alloys under different aging treatments were observed and compared by metallographic method and scanning electron microscope. The results show that the higher the temperature of the single stage aging treatment, the shorter the time of the alloy to reach the peak aging, the lower the corresponding peak aging strength. In the early stage of aging, the conductivity increases with the aging time, and the higher the aging temperature, the faster the second phase precipitation rate, so the higher temperature aging, alloy tensile strength and conductivity growth rate faster; At the end of the aging period, the strengthening phase continues to precipitate and grows in a non-dispersive distribution, so the tensile strength will decrease, and the conductivity of the alloy will continue to increase due to the decrease of the solid solubility of the matrix. |
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