As pouring temperature decreasing, primary phase in the alloy without re addition changes from large dendritic crystal to equiaxed crystal.
未添加re的合金，随浇注温度的下降，其初生相由发达的树枝晶转变成等轴枝晶。
It indicates that the shape of W and WC grains is varied, such as dendritic and chain structure, and there are many crystal defects in WC grains.
发现钨和碳化钨粉形状复杂，多为树枝状或链状颗粒团形式，碳化钨粉中有较多的晶体缺陷。
It indicates that the shape of W and WC grains is varied, such as dendritic and chain structure, and there are many crystal defects in WC grains.
发现钨和碳化钨粉形状复杂，多为树枝状或链状颗粒团形式，碳化钨粉中有较多的晶体缺陷。
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