A physical explanation of plateau in velocity vs. undercooling curve using a undercooled dendrite growth model

Zheng Chen, Feng Liu, Cheng Jin Shen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A steady-state non-equilibrium dendrite growth model was extended for binary alloy assuming non-linear liquidus and solidus. Satisfactory agreement of the model prediction with the experimental data of Ni-0.7at.%B and Ni 30Cu70 alloys was achieved. The velocity plateau as experimentally observed in the velocity versus undercooling is quantitatively analyzed in terms of this model. Accordingly, the initiating point (i.e. corresponding to the critical velocity of absolute solutal stability V C*) and the ending point (i.e. corresponding to the velocity of maximal tip radius VRm) of the plateau are characterized.

Original languageEnglish
Title of host publicationManufacturing Process Technology
Pages3815-3818
Number of pages4
DOIs
StatePublished - 2011
Event2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011 - Guilin, China
Duration: 9 Apr 201111 Apr 2011

Publication series

NameAdvanced Materials Research
Volume189-193
ISSN (Print)1022-6680

Conference

Conference2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011
Country/TerritoryChina
CityGuilin
Period9/04/1111/04/11

Keywords

  • Dendritic growth
  • Non-linear liquidus and solidus
  • Plateau

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