The star cracks in macrostructure appear in some hypo-peritectic continuous cast alloy blooms and these cracks cannot be stock completely by hot rolling reduction ratio, macroetching testing and SEM.

• 摘要一些亚包晶合金钢连铸大方坯出现低倍星状裂纹，在一定的压缩比下经轧制仍不能完全消除这种低倍缺陷。