Cracks and scale off are main failure forms of high Ni-Cr centrifugal combined casting roller and has great effects on mill production.

分析指出高镍铬离心复合铸造轧辊裂纹、剥落是失效的主要形式，对轧钢生产影响大。

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Results show that the supersaturated solidification Cr-content increases in the rapidly quenched alloys induced the great increase of vacancy density and production of vacancy plates.

结果表明，该合金经急冷处理后由于过饱和固溶铬含量的增加，导致空位浓度显著提高与空位盘的产生。

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