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3 铸态合金中金属间化合物的EDS结果和面积分数

Table 3 EDS analyses of the intermetallic phases measured in as-cast alloys (atomic fraction, %) and area fraction

Alloy Phase Al Si Mg Fe Zr Ti Reference Area fraction 1 π-Fe 71.37 17.11 8.85 2.67 - - [22] - β-Fe 89.37 6.67 - 3.96 - - [22] - 2 π-Fe 68.17 25.73 4.93 1.17 - - [22] - (Al, Si)3(Zr, Ti) 85.18 8.06 0.98 - 3.29 2.49 [10] <0.10% 3 π-Fe 68.65 19.23 9.15 2.97 - - [22] - (Al, Si)3(Zr, Ti) 49.54 27.67 - - 17.95 4.84 [10] 0.12% 4 π-Fe 89.98 6.18 3.21 0.63 - - [22] - (Al, Si)3(Zr, Ti) 79.49 10.93 - - 6.44 3.14 [10] 0.33%