Fatigue Crack Growth in Aluminum Alloy 5083-0 Thick Plate and Welds for Liquefied Natural Gas Tanks

Kelsey, R. A.; Nordmark, G. E.; Clark, J. N.

doi:10.1520/stp33127s

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mechanical properties are mainly dependent on the composition, phase structures and defects, and the properties change as function of temperature. It has been reported that materials often have some undesirable or unusual properties at cryogenic temperatures, and which make them attractive to cryogenic engineering such as liquefied natural gas (LNG) tank [9]. In the last decades, a number of research works have been carried out to clarify the cryogenic temperature -mechanical properties -microstructure evolution relations of pure Al and its alloys.…”

Section: Introductionmentioning

confidence: 99%

Effects of cryogenic temperature and pre-stretching on mechanical properties and deformation characteristics of a peak-aged AA6082 extrusion

Roven

Jia

2017

Materials Science and Engineering: A

View full text Add to dashboard Cite

Plastic deformation and surface characteristics of a peak-aged AA6082 alloy have been studied by means of tensile tests, Scanning Electron Microscopy (SEM), Electron Backscatter Diffraction (EBSD), Transmission Electron Microscopy (TEM) and Atom force Microscopy (AFM). The results showed that a simultaneous enhancement in ductility and strength of the alloy was obtained at 77K in comparison with that at 295K. The enhanced properties at 77K are attributed to higher work hardening accompanied by a more homogeneous slip mode.Moreover, in order to clarify the effect of temperature-induced microstructural changes on mechanical properties, a further investigation, i.e., pre-stretching at 77K and 295K with or without subsequent annealing treatment, followed by tension to fracture at 295K, was conducted. It was found that pre-stretching at both temperatures produce a yield point and followed by different yield drop zones, while pre-stretching and annealing lead to reduced stress levels, much less pronounced yield point behavior and improved ductility compared to their predecessors. Especially, pre-straining at 77K with subsequent annealing demonstrated the highest ductility and work hardening ability among the four cases. It is thought the obtained results are associated with variety of microstructure such as strain localization, β ' /β '' ratio and dislocation densities under different conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of cryogenic temperature and pre-stretching on mechanical properties and deformation characteristics of a peak-aged AA6082 extrusion

Roven

Jia

2017

Materials Science and Engineering: A

View full text Add to dashboard Cite

show abstract

Fracture Resistance of Aluminum Alloys

Kaufman¹

2019

Properties and Selection of Aluminum Alloys

View full text Add to dashboard Cite

This article discusses the concepts underlying linear elastic fracture mechanics and elastic-plastic fracture mechanics as well as their importance in characterizing the fracture behavior of the high-strength aluminum alloys. It describes the three methods used for analyzing elastic-plastic fracture, namely R-curve concept, J-integral concept, and crack tip opening displacement method. The article considers the primary measures used to assess the toughness of aluminum alloy castings and wrought alloys: notch toughness, tear resistance, and plane-strain fracture toughness.

show abstract

Fatigue Crack Growth in Aluminum Alloy 5083-0 Thick Plate and Welds for Liquefied Natural Gas Tanks

Cited by 2 publications

References 0 publications

Effects of cryogenic temperature and pre-stretching on mechanical properties and deformation characteristics of a peak-aged AA6082 extrusion

Effects of cryogenic temperature and pre-stretching on mechanical properties and deformation characteristics of a peak-aged AA6082 extrusion

Fracture Resistance of Aluminum Alloys

Contact Info

Product

Resources

About