Void formation in rapidly-solidified metals

J. B. Adams; W. G. Wolfer

doi:10.1016/0956-7151(93)90131-B

Void formation in rapidly-solidified metals

J. B. Adams, W. G. Wolfer

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

A dynamic nucleation code has been developed for predicting the evolution of vacancy clusters and nanometer-size voids in rapidly-quenched metals containing helium and oxygen impurities. Calculations have been carried out for typical quench rates and subsequent heat treatments of the powders during and after consolidation. These calculations show that high densities of submicroscopic voids can form in rapidly quenched metal powders, due to the quenched-in vacancy supersaturation and the entrapment of gases. The significance of these nanometer voids to the morphology or precipitates formed in rapidly-solidified steels is discussed.

Original language	English (US)
Pages (from-to)	2625-2632
Number of pages	8
Journal	Acta Metallurgica Et Materialia
Volume	41
Issue number	9
DOIs	https://doi.org/10.1016/0956-7151(93)90131-B
State	Published - Sep 1993
Externally published	Yes

ASJC Scopus subject areas

General Engineering

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10.1016/0956-7151(93)90131-B

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abstract = "A dynamic nucleation code has been developed for predicting the evolution of vacancy clusters and nanometer-size voids in rapidly-quenched metals containing helium and oxygen impurities. Calculations have been carried out for typical quench rates and subsequent heat treatments of the powders during and after consolidation. These calculations show that high densities of submicroscopic voids can form in rapidly quenched metal powders, due to the quenched-in vacancy supersaturation and the entrapment of gases. The significance of these nanometer voids to the morphology or precipitates formed in rapidly-solidified steels is discussed.",

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AB - A dynamic nucleation code has been developed for predicting the evolution of vacancy clusters and nanometer-size voids in rapidly-quenched metals containing helium and oxygen impurities. Calculations have been carried out for typical quench rates and subsequent heat treatments of the powders during and after consolidation. These calculations show that high densities of submicroscopic voids can form in rapidly quenched metal powders, due to the quenched-in vacancy supersaturation and the entrapment of gases. The significance of these nanometer voids to the morphology or precipitates formed in rapidly-solidified steels is discussed.

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JO - Acta Metallurgica Et Materialia

JF - Acta Metallurgica Et Materialia

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Void formation in rapidly-solidified metals

Abstract

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