Accession Number:

AD0261172

Title:

CRACK NUCLEATION IN MAGNESIUM OXIDE BI-CRYSTALS UNDER COMPRESSION

Descriptive Note:

Corporate Author:

HONEYWELL RESEARCH CENTER HOPKINS MINN

Personal Author(s):

Report Date:

1961-07-01

Pagination or Media Count:

1.0

Abstract:

MgO bi-crystals having a wide range of misorientation were tested under 3 point bending. The interaction of slip bands coming from the center loading beam with the grain boundary were studied in the case of small misorientations, medium misorientations and large misorientation. The work showed that a crack can nucleate at a grain boundary in MgO at room temperature by the pileup of a single band of edge dislocations according to the classical Zener model. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE