喷丸工艺对7075铝合金板材表面性能的影响

郑文涛, 陆飞雪, 都凯, 王志惠, 贾海龙

Effect of Shot Peening on Surface Properties of 7075 Al-alloy Sheet

ZHENG Wentao, LU Feixue, DU Kai, WANG Zhihui, JIA Hailong

表1 喷丸工艺参数及处理样表面粗糙度和硬度

Table 1 Shot peening process parameters and surface roughness and hardness of treated Al-alloy samples

Sample Projectile diameter / mm Injection pressure / MPa Coverage / % Roughness / μm Hardness / HV 0 0 0 0 0.162 155.3 1 0.04 0.3 100 0.243 181.5 2 0.04 0.4 100 0.623 187.3 3 0.04 0.5 100 0.784 191.0 4 0.1 0.3 100 1.299 191.5 5 0.1 0.4 100 1.746 205.2 6 0.1 0.5 100 1.878 210.8 7 0.4 0.3 100 2.382 206.2 8 0.4 0.4 100 4.080 216.4 9 0.4 0.5 100 4.131 223.0 10 0.1 0.3 200 0.623 217.2 11 0.1 0.3 300 0.842 220.7