Rapid dendritic growth and solute trapping within undercooled ternary Ni-5%Cu-5%Mo alloy

J. Chang, H. P. Wang, K. Zhou, B. Wei

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

The dendritic growth velocity of α-Ni phase was measured as a function of undercooling in the nonequilibrium solidification process of an undercooled ternary Ni-5%Cu-5%Mo alloy. At the experimental maximum undercooling of 308 K (0.17T L), the dendritic growth velocity attains 32 m/s. With the increase of undercooling, a morphological transition from dendrites into equiaxed grains occurs. Furthermore, the high dendritic growth velocity leads to the significant solute trapping of Cu and Mo elements and almost segregationless solidification is realized at the maximum undercooling.

Original languageEnglish
Pages (from-to)139-143
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume109
Issue number1
DOIs
StatePublished - Oct 2012

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