Aluminum-lithium alloys with hafnium

Patent · Tue Sep 26 00:00:00 EDT 1989

OSTI ID:7153517

Rioja, R J; Bretz, P E; Jacoby, J

This patent describes an aluminum base alloy suitable for forming into a wrought product having improved combinations of strength and fracture toughness. The alloy consisting essentially of 0.2 to 5.0 wt % Li, 0.05 to 6.0 wt % Mg, 0.2 to 5.0 wt % Cu, 0 to 2.0 wt % Mn, 0 to 1.0 wt, % Zr, 0.05 to 12.0 wt. % Zn, 0.05 to 1.0 wt. % Hf, 0.5 wt.% Fe, 0.5 wt. % max. Si, the balance aluminum and incidental impurities.

• Assignee: Aluminum Co. of America, Pittsburgh, PA
• Patent Number(s): US 4869870
• Application Number: PPN: US 7-172504A; TRN: 90-007679
• OSTI ID: 7153517
• Resource Relation: Patent File Date: 24 Mar 1988
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
CHEMICAL COMPOSITION
COPPER COMPOUNDS
HAFNIUM COMPOUNDS
IRON COMPOUNDS
LITHIUM ALLOYS
MAGNESIUM COMPOUNDS
MANGANESE COMPOUNDS
MECHANICAL PROPERTIES
SILICON COMPOUNDS
ZINC COMPOUNDS
ZIRCONIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM ALLOYS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360101* - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties