Fifth Status Report Of The U S Government Metalworking Processes And Equipment Program

As part of the Metalworking Processes and Equipment Program, information was collected on deformation characteristics of metals and their effect on processing operations. The report presents the information collected from technical engineering reports on Government contracts and from general engineering and metallurgical publications. The objective is to help the nonspecialist in recognizing the implications of scientific findings and in applying them in specific operations. This report contains a series of articles covering the following subjects: Ductile Fracture; Application of High Pressure to the Forming of Brittle Metals; Superplasticity; Lubrication in Metal-Deformation Processes; Swaging; Adiabatic Conditions in Deformation Processing; Residual Stresses produced by Deformation. These subjects are treated in two ways: (1) generalized discussions of common processes point out why specific variables must be modified in order to deform certain types of metals satisfactorily; and (2) data on the more difficult-to-form metals are used to illustrate the principles, limitations, and effects of the processes. (Author).

The introductory sections contain a brief discussion of the general methods of producing fiber-reinforced composites and of the theory of fiber-reinforcement of metals. The body of the report describes research on fiber-reinforced metal matrix composites, and is organized according to metal matrix materials. For convenience, the report is divided into two sections: Low density matrices (including aluminum, magnesium, and titanium and their alloys) and high density matrices (cobalt, copper and its alloys, iron, lead-tin alloys, nickel and nickel alloys, silver, tantalum, and tungsten). (Author).

This report represents a portion of the information contained in the March, 1967, revised edition of the 'Aircraft Designer's Handbook for Titanium and Titanium Alloys' which was prepared by the Defense Metals Information Center under the joint sponsorship of the U.S. Air Force Research and Technology Division, and the Federal Aviation Agency. The important techniques discussed include; (1) brake forming, (2) stretch forming, (3) deep drawing, (4) trapped-rubber forming, (5) tube bulging, (6) bending, (7) drop-hammer forming, (8) roll forming, (9) roll bending, (10) spinning, (11) shear forming, (12) dimpling, (13) joggling, and (14) hot sizing. Auxiliary metalworking operations, preparation for forming, blank heating methods, lubricants for forming and tooling materials are discussed. Other data available in the open literature have been summarized and referenced to present a comprehensive picture on the state of the art of these fabrication methods as related to titanium and its alloys. (Author).