Fast Freezing as a Method for Aluminum Alloy Development.

Abstract

It is shown that the atomization process generates sufficiently high freezing rates to suppresswithin limits the primary crystallization of intermetallic compounds and the secondary crystallization of eutectic. The resultant structures are probably supersaturated solid solutions. Thus for example alloying aluminum with as much as 5% Mn and 3% Cr, respectively, is practical. It is shown that Al-Mn-Cu and Al-Mn-Cr-Mg-Zn alloys produced from consolidated powder can generate high tensile yield strengths and hardnesses which resist softening at temperatures as high as 350C. Some alloys show good hot yield strengths. Preliminary tests indicate that these alloys are not susceptible to stress-corrosion cracking at stresses of yield strength magnitude. (Author Modified Abstract)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1973
Accession Number
AD0759828

Entities

People

  • C. Freda
  • R. Dudek
  • Rebecca L. Russell
  • W. Rostoker

Organizations

  • University of Illinois at Chicago

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Corrosion
  • Crystallization
  • Freezing
  • Intermetallic Compounds
  • Solid Solutions
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Transition Temperature
  • Yield Strength

Readers

  • Powder metallurgy of Titanium alloys.