Effect of Cooling Rate and Iron Content on the Solidification Structures of Copper-Iron Alloys

Bao Mian Li; Hai Tao Zhang; Jian Zhong Cui

doi:10.4028/www.scientific.net/AMR.327.89

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Effect of Cooling Rate and Iron Content on the Solidification Structures of Copper-Iron Alloys

Abstract:

The effect of cooling rate and iron content on the solidification structures of copper-iron alloys had been investigated in this paper. The results show that the morphology of as-cast structure is mainly determined by iron content and the grain size is affected by both the iron content and cooling rate. The as-cast structure is obviously refined and its morphology changes gradually from columnar grains to equiaxed ones with the increase in iron content. When iron content is greater than 3% (in mass%) the as-cast structure is composed wholly of equiaxed grains. With the increase in cooling rate the as-cast structure is gradually refined and primary γ-Fe phase is gradually scattered uniformly throughout the matrix.