对用电磁搅拌装置制备的半固态奥氏体不锈钢1Cr18Ni9Ti钢进行了直接轧制成形试验.轧制前后微观组织的分析结果表明:半固态1Cr18Ni9Ti钢具有球形或近球形的初生固相颗粒,并大多呈聚集状态;轧制变形后,液固相发生分离,产生液相偏析;只有当固相率达到50%时,初生固相颗粒在轧制过程中才会发生塑性变形,同时初生固相颗粒内部的δ相由多边形状转变为板条形状.
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