铍青铜(QBe2)的分级时效工艺

Twice-Step Ageing Method for Beryllium Bronze(QBe2)

为提高铍青铜(QBe2)带材的抗拉强度,采用正交试验法对铍青铜带材进行分级时效处理,结果表明二级时效温度对抗拉强度影响最大,其最佳工艺参数为一级时效温度200℃,一级时效时间为1h,二级时效温度为330℃,二级时效时间为2h。此时抗拉强度最大值为1.336GPa。

Orthogonal experiment of twice-step ageing method was used for beryllium bronze. The tensile strength of 1. 336 GPa was achieved while holding an hour at the temperature of 200℃, then keeping two hours at the temperature of 330℃. The effect of twice-step ageing method on tensile strength of beryllium bronze was studied, and the temperature of the second step affected the tensile strength more than other factors.