THE BRITTLE FRACTURE OF NON-METALS.

reportActive / Technical Report | Accession Number: AD0802241 | Need Help?

Abstract:

A metallographic study has been made of the room-temperature deformation of Ge, Al2O3, and Tic, using both optical and electron microscopy. Examination of microhardness impressions provides strong evidence that dislocation motion can occur in these materials at room temperature. However, extensive studies of the fracture of Ge bend testpieces indicate that dislocations play no significant role in the fracture process and that failure is completely brittle. Author

Author(s):
Pugh, E. N.
Author Organization(s):
MARTIN MARIETTA CORP BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES
Descriptive Note:
Final rept. 1 Jun 65-31 May 66,
Pagination:
0027

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AROD-5733:1
Contract/Grant Number(s):
DA-31-124-ARO(D)-388
Project Number(s):
20014501B32D
Monitor Series:
5733:1
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*BRITTLENESS), (*CERAMIC MATERIALS, FRACTURE(MECHANICS)), (*GERMANIUM, FRACTURE(MECHANICS)), (*FRACTURE(MECHANICS), CRYSTAL DEFECTS, ALUMINUM COMPOUNDS, OXIDES, TITANIUM COMPOUNDS, CARBIDES, NOTCH SENSITIVITY, SEMICONDUCTORS
Field(s)/Group(s):
Mechanics
Report Date:
1966 Oct 01