【摘 要】
：
High-strength,corrosion-resistant,and lightweight Al-Mg alloys perform an important function in harsh coastal service environments.Corrosion resistance is generally inversely correlated with strength;hence,it is difficult to simultaneously optimize both.I
【机 构】
：
Zhejing Electric Power Corporation Research Institute, Hangzhou 310014, China;State Key Laboratory o
论文部分内容阅读
High-strength,corrosion-resistant,and lightweight Al-Mg alloys perform an important function in harsh coastal service environments.Corrosion resistance is generally inversely correlated with strength;hence,it is difficult to simultaneously optimize both.In this study,a low-magnesium Er-containing Al-based alloy that is stronger and more corrosion resistant than Al-based alloys have been reported.The alloy contains Er,and the precipitation of Al3Er within a face-centered cubic matrix is obtained by a series of smelting-casting,heat treatment,and rolling processes.It is presumed that the strengthening phase of Al3Er pinning dislocations improves alloy strength.It also increases the recrystallization temperature of cold-rolled matrix and induces the distribution of small-angle grain boundaries,thus allowing the alloy to achieve excellent environmental corrosion resistance.As a result,strength and corrosion resistance are simultaneously improved.
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