柱状晶区是指随模具温度的升高,只能随锭模的散热而降低温度,形核困难,只有表层晶粒向内生长,不同晶向的生长速度不一样,那些较生长有利的部分晶粒同时向内长大,掩盖了大量的晶粒,形成了较粗且方向基本相同的长形晶粒区。
...织的分析,在连铸坯的最外层是细晶区,又称为激冷区(Chill Zone),由随机取向的等轴细晶组成;然后是柱状晶区(Columnar Zone),由平行于热量
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... columnar fracture 柱状断口 columnar grain zone 柱状晶区 columnar ion exchange 塔式离子交换 ...
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... zone带、区、地带、晶带、范围 zone of columnar crystal柱状晶区、柱状晶带 zone of equiaxial crystals等轴晶区(钢锭) ...
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结果表明:锂能消除合金凝固态的柱状晶区并使之转变为等轴晶区;
The results show that the dendrite crystal area of alloy is diminished and then become equiaxed structures after lithium is added;
过滤后铸棒组织中的柱状晶区缩小,中心等轴晶区扩大、晶粒度降低。
The area of columnar structures decreased, and that of equiaxed crystals enlarged. The grain size reduced.
焊缝区组织主要为等轴晶和树枝柱状晶,熔合区组织主要为柱状晶。
The crystallizing morphology on the weld seam was equiaxed grains and dendrites and that on the fusion area were columnar crystals.
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