Accession Number:

ADA399849

Title:

Brittle to Ductile Transition in Cleavage Fracture of Alpha-Iron: Experiments and Modeling of Mechanisms

Descriptive Note:

Final technical rept. 1996-1999

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s):

• Argon, Ali S.

Report Date:

2002-02-15

Pagination or Media Count:

206.0

Abstract:

In this research the mechanisms of the brittle to dud tile transition of fracture initiated primarily by crack tip processes under both quasi-static as well as dynamic conditions was studied experimentally, and mechanistically modeled. Additional experiments and modeling included the role of grain boundaries in resisting cleavage cracking among grains in Fe-3Si alloy, also associated with modeling.

Descriptors:

• *CRACKING(FRACTURING)
• *BRITTLENESS
• DYNAMICS
• TRANSITIONS
• DUCTILITY
• TILES
• GRAIN BOUNDARIES
• CLEAVAGE
• SILICON ALLOYS
• UNEXPLODED AMMUNITION
• CRACK TIPS

Subject Categories:

• Properties of Metals and Alloys
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE