预时效对8090和2091Al-Li合金中S相析出的影响 - 中南大学学报（自然科学版、英文版） 关键字: Al—Li合金; S’相; 预时效; 沉淀[gap=798]Key words: Al-Li alloys; S' phase; pre-aging; precipitation
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随着预时效温度的升高，力学性能和抗腐蚀性能提高。
With the increase of pre-ageing temperature, the mechanical properties and the resistance to corrosion were better.
研究了等温时效过程中试样长度的变化和低温预时效的影响。
The expansion behaviors during aging of the amorphous alloy were also studied.
结果表明，在固溶与时效处理中间加入预时效处理可有效消除单晶合金组织与成分的不均匀性。
The effects of pre-aging treatment on segregation behavire of Ni-based single crystal superalloy CMSX-3 were also studied.
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