Comparison of Aluminum Alloy 7050, 7049, MA52, and 7175-T736 Die Forgings

Abstract

Die forgings in aluminum alloys 7050, 7049, and MA52 were fabricated and evaluated for resistance to stress-corrosion cracking, quench sensitivity, and fracture toughness. In addition, all Alcoa data on 7050, 7049, and special process 7175-T7X die forgings were examined and the properties were collated. Stress-corrosion resistances were evaluated using the severest combinations of forging type and test conditions. All of these newer alloys were less quench sensitive than alloy 7075, and all developed better combinations of resistance to stress-corrosion cracking and fracture toughness than 7075-T6 and 7079-T6 at equal strengths. Because it developed the best combination of properties, alloy 7050 is a preferred selection for use as die forgings of relatively heavy section thickness for the aerospace industry. This alloy also can be supplied as hand forgings, plate, extrusions, and sheet. Special process 7175 is an equally good selection for die forgings of thin to moderate section thickness.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1973
Accession Number
AD0766328

Entities

People

  • James T. Staley

Organizations

  • Alcoa

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aerospace Industry
  • Air Force Facilities
  • Aluminum
  • Aluminum Alloys
  • Contracts
  • Corrosion Resistance
  • Environment
  • Factor Analysis
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Plastic Explosives
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Tensile Properties
  • Test Methods
  • Toughness

Fields of Study

  • Materials science

Readers

  • Battery Technology and Engineering
  • Materials Science (Mechanical Engineering).
  • Systems Analysis and Design

Technology Areas

  • Space