The Influence of Cryogenic Conditions on the Process of AA2519 Aluminum Alloy Cracking

This study presents the results of tests involving determining quantities used to describe fracture toughness of a heat-treated AA2519 aluminum alloy applied in, among other things, constructing American military amphibians. These quantities were determined using the J-R curve method for two tempera...

Full description

Saved in:
Bibliographic Details
Published in:Materials 2020-03, Vol.13 (7), p.1555
Main Authors: Kotyk, M, Boroński, D, Maćkowiak, P
Format: Article
Language:English
Subjects:
Aircraft
Alloys
Aluminum alloys
Aluminum base alloys
Ambient temperature
Amphibians
Armed forces
Aviation
Composite materials
Corrosion resistance
Crack propagation
Cryogenic effects
Cryogenic temperature
Fatigue failure
Fatigue tests
Fracture mechanics
Fracture toughness
Heat treating
Heat treatment
Liquid nitrogen
Low temperature
Mechanical properties
Metal fatigue
Military engineering
Nitrogen
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study presents the results of tests involving determining quantities used to describe fracture toughness of a heat-treated AA2519 aluminum alloy applied in, among other things, constructing American military amphibians. These quantities were determined using the J-R curve method for two temperature values, 293 K and 77 K. The low temperature was provided by putting the tested specimen into a liquid nitrogen bath and keeping it there throughout the experiment. Based on the tests results, cryogenic conditions cause an increase in the maximum experimental value of the J-J integral, from 66.3 to 87.3 kJ/m Moreover, an analysis of the fatigue fracture microstructure revealed differences between specimens tested in ambient temperature and those tested in cryogenic temperature.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13071555