The Need for Rapidly Solidified Powder Metallurgy Aluminum Alloys for Aerospace Applications

2008 ◽  
pp. 7-7-32 ◽  
Author(s):  
WE Quist ◽  
RE Lewis
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys ◽  
Aerospace Applications ◽  
Rapidly Solidified

TEM/STEM Characterization of Rapidly Solidified Aluminum Alloys

1985 ◽  
Vol 43 ◽  
pp. 30-31
Author(s):  
R. J. Kar ◽  
T. P. McHale ◽  
R. T. Kessler
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Aluminum Alloys ◽  
High Strength ◽  
Advanced Materials ◽  
Structure Property ◽  
Aerospace Applications ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Rapidly Solidified

Low-density and high strength-type rapidly solidified (RST) aluminum alloys offer promise for structural aerospace applications. At Northrop, as part of a continuing program to establish structure-property relationships in advanced materials, detailed transmission electron microscopy (TEM)/scanning transmission electron microscopy (STEM) of candidate RST aluminum-lithium (Al-Li) and high strength (7XXX-type) aluminum-copper-magnesium-zinc (Al-Cu-Mg-Zn) alloys is routinely performed. This paper describes typical microstructural features that we have observed in these alloys.Figure 1 illustrates the microstructure of an inert-gas atomized RST Al-Li-Cu-Mg-Zr alloy. Frequently the grain boundaries are decorated with continuous or semi-continuous stringers of oxide that are relatively opaque to the incident electron beam. These have been identified to be Al-,Mg-, and Li- containing oxides present on powder particle surfaces prior to consolidation, and which have not been adequately broken up and dispersed by post-consolidation processing. The microstructures of these alloys are generally characterized by unrecystallized grains and equiaxed sub-grains pinned by fine (0.2μm) precipitates. These have been identified to be Al3Zr dispersoids using a combination of selected area diffraction/energy-dispersive x-ray (SAD/EDX) methods.

Development of High Damping Aluminum Alloys and Composites Using Rapidly Solidified Powder Metallurgy Process

2003 ◽  
Vol 426-432 ◽  
pp. 411-416 ◽  
Author(s):  
P.Y. Li ◽  
Hyung Ju Yu ◽  
Sheng Long Dai ◽  
D.B. Liu ◽  
S.C. Chai ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys ◽  
Powder Metallurgy Process ◽  
Rapidly Solidified ◽  
Metallurgy Process

Effect of Rolling Parameters on the Properties of Al-Fe-V Sheet Rolled on an Experimental Mill

1985 ◽  
Vol 58 ◽  
Author(s):  
A. Brown ◽  
D. Raybould
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Aluminum Alloys ◽  
Room Temperature ◽  
Thermomechanical Processing ◽  
High Temperature Strength ◽  
Rapidly Solidified ◽  
Large Sheet ◽  
Room Temperature Strength

ABSTRACTIn recent years, interest in high temperature aluminum alloys has increased. However, nearly all the data available is for simple extrusions. This paper looks at the properties of sheet made from a rapidly solidified Al-10Fe-2.5V-2Si alloy. The sheet is made by direct forging followed by hot rolling, this is readily scalable, so allowing the production of large sheet. The room temperature strength and fracture toughness of the sheet are comparable to those of 2014-T6. The high temperature strength, specific stiffness and corrosion resistance are excellent. Recently, improved thermomechanical processing and new alloys have allowed higher strengths and fracture toughness values to be obtained.

scholarly journals Rapidly solidified aluminum alloys.

1989 ◽  
Vol 39 (11) ◽  
pp. 850-862
Author(s):  
Kazuhisa SHIBUE
Keyword(s):  
Aluminum Alloys ◽  
Rapidly Solidified

Powder Metallurgy Aluminum Alloys: Structure and Porosity

2019 ◽  
Author(s):  
Will Judge ◽  
Georges Kipouros
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys ◽  
Material Properties ◽  
Cost Effective ◽  
High Reactivity ◽  
Commercial Production ◽  
Processing Conditions ◽  
Near Net Shape ◽  
And Performance ◽  
Production Conditions

The production of aluminum alloys through powder metallurgy (PM) processes allows for the manufacture of net- or near-net-shape components in a cost-effective and sustainable manner. The high reactivity of aluminum metal, however, complicates PM processing, and special attention must be given to certain steps during production, particularly sintering. PM processing conditions strongly affect the structure and porosity of aluminum PM alloys, which ultimately determine their material properties and performance. In this article, the fundamental aspects of the commercial production of aluminum PM alloys are presented, along with the effects of production conditions on the structure and porosity of aluminum PM alloys. The properties and performance of aluminum PM alloys are then analyzed and interpreted with respect to their structure and porosity.

Tensile Properties and Fractography of Three AA 2000 Series Aluminum Alloys Used for Aerospace Applications

2019 ◽  
Vol 72 (10) ◽  
pp. 2623-2630
Author(s):  
G. M. Owolabi ◽  
M. Thom ◽  
O. O. Ajide ◽  
N. Kumar ◽  
A. G. Odeshi ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Tensile Properties ◽  
Aerospace Applications
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