Evolution of solidification texture during additive manufacturing

H. L. Wei, J. Mazumder, T. DebRoy

Research output: Contribution to journalArticle

124 Scopus citations

Abstract

Striking differences in the solidification textures of a nickel based alloy owing to changes in laser scanning pattern during additive manufacturing are examined based on theory and experimental data. Understanding and controlling texture are important because it affects mechanical and chemical properties. Solidification texture depends on the local heat flow directions and competitive grain growth in one of the six <100> preferred growth directions in face centered cubic alloys. Therefore, the heat flow directions are examined for various laser beam scanning patterns based on numerical modeling of heat transfer and fluid flow in three dimensions. Here we show that numerical modeling can not only provide a deeper understanding of the solidification growth patterns during the additive manufacturing, it also serves as a basis for customizing solidification textures which are important for properties and performance of components.

Original languageEnglish (US)
Article number16446
JournalScientific reports
Volume5
DOIs
StatePublished - Nov 10 2015

All Science Journal Classification (ASJC) codes

  • General

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