摘要
研究了高强铝合金的力学性能与Zr含量的关系 ,计算了合金的各种强化因素值。研究发现 :合金的抗拉强度σb 和屈服强度σ0 .2 均随Zr含量的增加而增大 ,增幅分别达到 11.8%和 12 .6 % ;合金延伸率δ在Zr添加量不高时随Zr含量的增加而增大 ,在Zr含量为 0 .0 6 %时出现峰值 ,随后合金延伸率δ逐渐稳定在 8%左右。结合合金显微特征 ,合金强化机理主要包括晶粒细化、颗粒弥散强化及形变强化 ,在Zr含量为 0 .16 %的合金中相应的强化值分别为 2 1,35和 14MPa。
The relationship between Zr content and mechanical properties of high strength aluminum alloys was examined, and the strengthening values of several factors were calculated. The values of σ_b and σ_(0.2) are improved with increasing of Zr content, and the improving amplitude reach to 11.8% and 12.6% respectively. The elongation δ increases with increasing Zr content while Zr content is low, and reaches a peak at 0.06%Zr, then gradually stabilizes at about 8% Zr. Combined with microstructure of alloys, strengthening mechanism are mainly grain-refine, particles dispersion strengthening and improvement of deformation strengthening. The strengthening values of 0.16%Zr alloy is 21, 35, and 14 MPa, respectively.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2003年第5期1192-1195,共4页
The Chinese Journal of Nonferrous Metals
基金
国家重点基础研究发展规划资助项目 (G19990 64 90 74)
