Zr含量对铸造AlSi7Mg0.4合金力学性能的影响

张云翔, 赵海东, 朱霖, 李昌海, 武汉琦

Effect of Zr Contents on Mechanical Properties of Cast AlSi7Mg0.4 Alloys

ZHANG Yunxiang, ZHAO Haidong, ZHU Lin, LI Changhai, WU Hanqi

表5 T6热处理合金中β″析出相的平均长度、横截面积和数密度

Table 5 Average length, cross-section and number density for the β’’ precipitates derived from TEM results of T6 treated alloys

Alloy Average length/nm Cross-section/nm2 Number density/nm-3 1 25.02±1.14 8.34±0.33 (9.79±0.66)×10-5 2 26.14±1.16 8.58±0.29 (9.95±0.47)×10-5 3 25.33±1.69 8.46±0.56 (9.27±0.75)×10-5 4 26.68±1.13 8.05±0.20 (9.97±0.59)×10-5