Average grain size increased and grain became round with strain rates reduction.
应变速率减小，晶粒平均尺寸增大，晶粒变得圆整。
There are serious stress concentration round the particle corner and strain concentration in the matrix adjacent to the particle corners along the load.
颗粒尖角附近有严重的应力集中现象，在外力方向上颗粒端部附近的基体上的应变也有集中现象。
The results show that the sheet in the adjacent area of die and punch deforms primarily. The maximal value of stress and strain appears in the sheet of outboard punch round corners.
结果表明，凸模和凹模交界处的板料首先变形，应力及应变最大值出现在凸模圆角部位外侧板料上。
The results show that the sheet in the adjacent area of die and punch deforms primarily. The maximal value of stress and strain appears in the sheet of outboard punch round corners.
结果表明，凸模和凹模交界处的板料首先变形，应力及应变最大值出现在凸模圆角部位外侧板料上。
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