Accession Number:

ADA048657

Title:

High Strength Aluminum Casting Technology: Squeeze Casting of 7075 Alloy.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL SURFACE WEAPONS CENTER DAHLGREN LAB VA

Personal Author(s):

Report Date:

1977-10-01

Pagination or Media Count:

88.0

Abstract:

The objective of this investigation was to develop wrought 7075-T6 mechanical properties in a cast aluminum alloy component of net or near-net shape. A squeeze casting process was selected as the manufacturing process. Following a limited heat treatment optimization effort, mechanical properties of the squeeze cast 7075 alloy components were determined. Sidewall fracture toughness and transverse tensile properties in the closed base of the cylindrical components approached reported properties for wrought 7075-T6 material. Chemical segregation, excessive grain size, low casting soundness and incomplete heat treatment response are thought to be the causes for the reduced mechanical properties. Methods to overcome these shortcomings are identified and a recommendation is made to continue the efforts required to attain the original objective.

Subject Categories:

  • Textiles
  • Metallurgy and Metallography
  • Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE