1) multilevel aging effect
多级过时效
2) Multi-artificial Aging
多级时效
1.
Effects of Multi-artificial Aging on Mechanical Properties of Low Pressure Casting A356.2 Aluminum Alloy Wheel
多级时效对低压铸造A356.2轮毂力学性能的影响
3) two-step overaging
双级过时效
1.
Compared with overaging at 400 ℃, two-step overaging at 300 ℃ + 400 ℃ following pre-deformatiom results in that the spacing among the particles increases from 2.
结果表明:过时效前的预轧制变形所形成的应变区为第二相提供了均匀的形核位置,提高了第二相粒子的体积分数;与400℃单级过时效相比,预变形后采用300℃+400℃双级过时效可使第二相粒子间距由2。
5) interrupted multi-step ageing process
多级断续时效工艺
6) multi step process
多级过程
1.
The objective function for the optimization of a multi step process is considered to obtain an anticipated product purity at a maximum recovery yield and a minimum number of CARE inividuals.
单级过程的优化目标函数（Ｆ１）为ＲＥＣ和ＰＦ的积，而多级过程则将获得一定纯度的目标组分情况下的回收率和ＣＡＲＥ级数之比为优化目标函数Ｆ２。
补充资料：过时效
overaging：与获得最佳力学性能（强度和硬度）的时效处理条件相比，过时效是指在温度过高或时间过长条件下发生的时效现象。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条