Void formation in rapidly-solidified metals

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(93)90131-B· OSTI ID:6240722

Adams, J B ^[1]; Wolfer, W G ^[2]

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1. Univ., of Illinois, Urbana, IL (United States). Dept. of Materials Science and Engineering
2. Sandia National Lab., Livermore, CA (United States)

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.

• OSTI ID: 6240722
• Journal Information: Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 41:9; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DATA
DENSITY
ELEMENTS
FLUIDS
GASES
HEAT TREATMENTS
HELIUM
IMPURITIES
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
METALS
MORPHOLOGY
NONMETALS
NUCLEATION
NUMERICAL DATA
OXYGEN
PHYSICAL PROPERTIES
POINT DEFECTS
POWDERS
RARE GASES
STEELS
THEORETICAL DATA
VACANCIES