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固溶温度对7B50铝合金组织与性能的影响
发布人：上海艾荔艾金属材料有限公司www.shailiai.com
更新时间：2015-08-25
采用金相组织(OM)、扫描电镜(SEM)、透射电镜(TEM)以及力学性能测试研究固溶温度对7B50铝合金固溶程度、组织及力学性能的影响。
固溶温度对7B50铝合金组织与性能的影响Effects of solution temperature on microstructures and
properties of 7B50 aluminum alloy
采用金相组织(OM)、扫描电镜(SEM)、透射电镜(TEM)以及力学性能测试研究固溶温度对7B50铝合金固溶程度、组织及力学性能的影响。结果表明：在460~480
℃温度范围内，随着固溶温度升高，实验合金的残余第二相粒子减少，固溶程度增加，相应时效强化效应增强，再结晶程度变化不大；当固溶温度高于480
℃后，残余第二相粒子的溶解没有明显提高，但再结晶程度加大，且合金组织发生过烧，力学性能明显恶化；当固溶温度为480
℃时，实验合金固溶较充分，再结晶程度不高，此时合金综合力学性能最好，因此，7B50合金的最佳固溶温度为480 ℃。
The effect of solution temperature on the solid
solubility, microstructure and mechanical properties of 7B50 alloy was studied
by optical microscopy (OM), scanning electron microscopy (SEM), transmission
electron microscopy (TEM) and tensile test. The results show that, with the
solution temperature increasing from 460 ℃ to 480 ℃，the amount of residual
phases decreases the solid solubility increases, and the recrystallization
hardly changes with increasing the solution temperature. The corresponding
ageing strengthening effect enhances. With the solution temperature increasing
above 480 ℃, the amount of residual phases has almost no change and the
recrystallization obviously increases. Alloy burnt obviously decrease the
mechanical properties. Complete dissolution of the particles in the 7B50 alloy
is obtained after solution treatment at 480 ℃.
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