摘要
利用双级雾化快速凝固工艺制备了微晶（２０２４Ａｌ）－２０Ｓｉ－５Ｆｅ合金，通过对合金微观组织分析和力学性能测定，研究了不同时效热处理工艺对合金性能影响．结果表明，合金的峰时效工艺包括：７５３Ｋ固溶１．５ｈ，水淬，自然时效９６ｈ；然后４２３Ｋ下人工时效６ｈ；峰时效热处理工艺下合金的极限抗拉强度达５５９．９ＭＰａ，硬度达ＨＶ２３１．８．
: In this paper a crystallite (2024Al)-20Si-5Fe alloy has been prepared by two-stageatomization technology. The effects of aging technology on the mechanical properties of the alloy havebeen investigated by analyzing the microstructure, and testing the tensile strength and Vickers hardnessof the alloy. The results showed that the peak aging technology of the alloy consisted of solution treatmentat 653 K for 1.5 h followed by quenching in water, a natural aging for 96 h and artificial aging at 423 K for6h. The maximum ultimate tensile strength and Vickers hardness of the alloy are 559.9 and 231.8 MParespectively.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期482-486,共5页
Acta Metallurgica Sinica
基金
黑龙江省科学技术基金!E9709
关键词
快速凝固
铝硅合金
时效处理
力学性能
微晶合金
: rapid solidification, aluminum-silicon alloy, aging treatment, mechanical property
