A Criterion for Plastically Induced Cleavage After General Yield in Notched Bend Specimens.

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Abstract:

Charpy V-notch specimens of mild steel with varying root radii were fractured in slow three point bending over a temperature range -196 to 20C. An analysis of the fracture data is presented based upon the relationship between the macroscopic deformation represented by the bend angle at fracture and the local plastic strains around the notch root. This analysis predicts that the critical bend angle at fracture should vary as the square of the root radius at a given temperature and is in agreement with the experimental observations. The physical significance of these micro- and macroscopic criteria are discussed. Author

Author(s):
Tetelman, A. S. ; Wilshaw, T. R.
Author Organization(s):
STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING
Descriptive Note:
Technical rept.,
Pagination:
0024

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-8, SU-DMS-69-T7
Contract/Grant Number(s):
DA-31-124-ARO(D)-251
Project Number(s):
DA-20014501-B-32-D
Monitor Series:
4800:13-MC
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*STEEL, MECHANICAL PROPERTIES), IMPACT TESTS, FRACTOGRAPHY, YIELD POINT, BENDING, LOW TEMPERATURE, DUCTILE BRITTLE TRANSITION, PLASTIC PROPERTIES, STRESSES, MATHEMATICAL MODELS, STRAIN(MECHANICS), LOADS(FORCES)
Field(s)/Group(s):
Metallurgy and Metallography, Mechanics
Report Date:
1968 Oct 01