Development of Structure and Properties of 7050 and 7475 Alloys During Direct Extrusion
Abstract
The primary aim of the investigation was to explore the production and control of microstructures of 7050 and 7475 through variations in the temperature compensated strain rate, Z (Z = epsilon exp delta H/RT). The experimental design was constructed such that the results could be expressed in terms of the more traditional -- billet temperature, extrusion ratio, and section aspect ratio. Extremes in ram speed, extrusion ratio, and billet temperature were chosen such that the widest variation in Z and, therefore, the widest variation in microstructure could be achieved. Accordingly, 7050 and 7475 were direct extruded into round rod and rectangular bars on a 22.24 MN press. The microstructure were characterized in the solution heat treated and aged conditions as a function of temperature compensated strain rate, Z.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1981
- Accession Number
- ADA115043
Entities
People
- T. H. Sanders Jr.
Organizations
- Alcoa