Journal ArticleDOI
Relationship between fracture toughness, fracture path, and microstructure of 7050 aluminum alloy: Part I. Quantitative characterization
TLDR
In this article, the fracture path of plane-strain fracture-toughness specimens of 7050 alloy (a typical alloy of the 7XXX series) is quantitatively characterized as a function of degree of recrystallization, specimen orientation, and aging condition.Abstract:
The fracture toughness of Al-Zn-Mg-Cu-based 7XXX aluminum alloys decreases with an increase in the extent of recrystallization. In this contribution, the fracture path of plane-strain fracture-toughness specimens of 7050 alloy (a typical alloy of the 7XXX series) is quantitatively characterized as a function of degree of recrystallization, specimen orientation, and aging condition. The fracture path is quantitatively correlated to fracture toughness, and the bulk microstructural attributes estimated via stereological analysis. In the companion article, these quantitative data are used to develop and verify a multiple-fracture micromechanism-based model that relates the fracture toughness to a number of microstructural parameters of the partially recrystallized alloy plate.read more
Citations
More filters
Journal ArticleDOI
Structure-property correlations in Al 7050 and Al 7055 high-strength aluminum alloys
TL;DR: In this article, the information available from different studies conducted on alloys Al 7050 and Al 7055 was collated to prepare maps that are intended to serve as guides to design aluminum alloys with desired combination of properties.
Journal ArticleDOI
Anisotropic ductile fracture: Part II: theory
TL;DR: In this article, a theory of anisotropic ductile fracture is outlined and applied to predict failure in a low alloy steel, and a rate-dependent version of the theory is employed to solve boundary value problems.
Journal ArticleDOI
On the relationship between microstructure, strength and toughness in AA7050 aluminum alloy
TL;DR: In this article, the effect of process parameters such as quench rate and precipitation heat treatment on the compromise between the toughness and the yield strength of AA7050 aluminum alloy (AlZnMgCu) are investigated, as well as the anisotropy of this compromise in the rolling plane.
Journal ArticleDOI
Recent Advances in Friction Stir Welding/Processing of Aluminum Alloys: Microstructural Evolution and Mechanical Properties
TL;DR: Friction stir welding (FSW) has been termed as green technology due to its energy efficiency and environment friendliness as mentioned in this paper, which is an enabling technology for joining metallic materials, in particular lightweight high-strength aluminum and magnesium alloys.
Journal ArticleDOI
The improvement of constituent dissolution and mechanical properties of 7055 aluminum alloy by stepped heat treatments
TL;DR: In this article, the effects of stepped heat treatments on the dissolution of soluble constituents and the mechanical properties of a 7055 aluminum alloy were investigated, and it was shown that a suitable pretreatment could enable subsequent high temperature solution treatment and complete dissolution of the constituent particles in 7055 alloys without overheating.
References
More filters
Journal ArticleDOI
Estimation of surface area from vertical sections.
TL;DR: ‘Vertical’ sections are plane sections longitudinal to a fixed (but arbitrary) axial direction that can be generated by placing the object on a table and taking sections perpendicular to the plane of the table.
Journal ArticleDOI
Grain boundary ductile fracture in precipitation hardened aluminum alloys
A. K. Vasudévan,Roger D. Doherty +1 more
TL;DR: In this article, the authors reviewed microstructural studies of grain boundary (gb) fracture in precipitation hardened aluminum alloys with respect to the three main ideas that have been developed to explain the gb fracture surfaces.
Journal ArticleDOI
Overview no. 102 Theory assisted design of high strength low alloy aluminum
E. Hornbogen,E.A. Starke +1 more
TL;DR: The design of an aluminum alloy having good strength while maintaining a high resistance to fracture is discussed in this article, where the desired microstructure consists of a small volume fraction of an ultra-fine dispersion of hard particles.
Journal ArticleDOI
The influence of microstructure and strength on the fracture mode and toughness of 7XXX series aluminum alloys
TL;DR: The effects of microstructure and strength on the fracture toughness of ultra high strength aluminum alloys have been investigated in this article, where three ultra high purity compositions were chosen and fabricated into 1.60 mm (0.063 inches) sheet in a T6 temper providing a range of yield strengths from 496 MPa (72 ksi) to 614 MPa(89 ksi).
Related Papers (5)
Metallurgical factors affecting fracture toughness of aluminum alloys
G. T. Hahn,A. R. Rosenfield +1 more