Abstract
The strength and ductility of metal from the meteorite Gibeon have been determined over a range of temperatures and strain rates. The room temperature yield strength is 3.2 kb and the elongation at fracture, 19%; these quantities are much less sensitive to temperature and strain rate in the Gibeon metal than in pure iron. There is no evidence of embrittlement of the metal in Gibeon by nonmetallic inclusions. Fragmentation of a mass of this metal would occur by ductile rather than by brittle fracture. The absence of structural evidence of ductile fracturing strongly suggests that the Gibeon irons are not fragments of some larger metal mass, such as a planetary core, but existed as separate metal pieces surrounded by stony material in the parent planet. The available evidence indicates that a similar conclusion probably can be drawn for most iron meteorites.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.