However, the second dendrite arm spacing (SDAS) changes little.
二次枝晶臂间距变化不明显。
Dendrite arm spacings is one of the important as-cast structural parameters.
枝晶间距是重要的铸态组织参数。
When the boron content is high and the cooling rate is relatively low, boride can exist at the dendrite arm.
当硼含量较高、冷却速度较慢时，硼化物存在于枝晶干。
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