摘要
Microstructure and aging behavior of spay-formed Al-Zn-Mg-Cu alloys were investigated as a function of alloying element addition. It reveals that the grains of the as-deposited alloys are refined with increasing Zn element, while the function of the Ni addition is to reduce grain boundary particles and eutectic in the as-extruded condition. Particles containing Mg and Zn are found to be increased with Zn content increasing, while the role of Ni is to reduce both number and size of these particles. During artificial aging, the increment of Zn content produces not much effect on peak hardness, in addition to an accelerated overage softening. An addition of about 0.13% Ni, however, gives rise to not only an improved peak hardness but also an improvement of property stability at the aging temperature.
Microstructure and aging behavior of spay-formed Al-Zn-Mg-Cu alloys were investigated as a function of alloying element addition. It reveals that the grains of the as-deposited alloys are refined with increasing Zn element, while the function of the Ni addition is to reduce grain boundary particles and eutectic in the as-extruded condition. Particles containing Mg and Zn are found to be increased with Zn content increasing, while the role of Ni is to reduce both number and size of these particles. During artificial aging, the increment of Zn content produces not much effect on peak hardness, in addition to an accelerated overage softening. An addition of about 0.13% Ni, however, gives rise to not only an improved peak hardness but also an improvement of property stability at the aging temperature.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2005年第3期368-370,共3页
Chinese Journal of Rare Metals
基金
国家"863"计划资助项目(超高强高韧铝合金的研究开发和产业化)
关键词
喷射成形
高强铝合金
显微组织
时效特性
元素影响
spray forming
Al-Zn-Mg-Cu alloy
microstructure
aging behavior
effect of additions
