Grain refinement in a single titanium powder particle impacted at high velocity

KeeHyun Kim, Makoto Watanabe, Jin Kawakita, Seiji Kuroda

Research output: Contribution to journalArticlepeer-review

114 Citations (Scopus)

Abstract

Titanium powder particles were deposited at high velocity on a steel substrate by a process called warm spraying. Extremely fine grains, several tens of nanometers in size, were observed along the interfacial boundary of the deposited particles known as splats and the substrate, where the most severe deformation had taken place. A schematic model to explain the mechanism of grain refinement of titanium powder is presented, in which dynamic recrystallization caused by adiabatic shear instability plays the major role.
Original languageEnglish
Pages (from-to)768-771
JournalScripta Materialia
Volume59
Issue number7
DOIs
Publication statusPublished - 2008

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