Effect of Thermomechanical Processing on the Elevated Temperature Behavior of Lithium-Containing High-Mg, Al-Mg Alloys.

Abstract

An experimental investigation was conducted to determine the mechanical properties and microstructural characteristics resulting from thermomechanical processing by warm rolling of an AL-8.0%Mg-0.5%Zr Alloy and an AL-8.0%Mg-1.0%Li-0.15%Zr Alloy. At ambient temperature, yield strengths were 38 to 44 Ksi (262-303 MPa), ultimate tensile strengths were 60 to 65 Ksi (414-45OMPa), with 10-12% elongation to fracture. Both alloys were moderately superplastic at 300C; an elongation of 340% was attained with the 1.0%Li alloy. Behavior of the alloy is consistent with continuous recrystallization during annealing and deformation at warm temperatures, and is very similar to that of previously studied AL-Mg-X alloys.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1986
Accession Number
ADA174005

Entities

People

  • Stephen B. Oster

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Creep
  • Crystal Lattices
  • Electron Microscopy
  • Engineering
  • Geometry
  • Grain Size
  • Materials
  • Materials Engineering
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanical Working
  • Metallurgy
  • Modulus Of Elasticity
  • Physical Metallurgy
  • Solid Solutions
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.