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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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al-zn-mg-(cu)合金线性升温时效后的性能
Keywords: 金属材料,al-zn-mg-(cu)合金,线性升温,时效,析出相
Abstract:
？用差示扫描量热分析(dsc)、硬度分析、透射电镜(tem)、三维原子探针(3dap)分析等手段研究了al-zn-mg-(cu)合金线性升温时效析出相的析出规律、性能变化和cu对合金的影响。结果表明:随着时效温度的提高al-zn-mg合金和al-zn-mg-cu合金的硬度先上升达到峰值然后下降,al-zn-mg-cu合金的硬度高于al-zn-mg合金。线性升温峰时效后两种合金的主要析出相为η'相,都含有少量的gp区和η相。cu的添加改变了析出相的化学成分和结构,延缓了亚稳相向平衡相的转变。
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