The Evolution of Ultra-High Strength Steels, and Research on Materials and Various Novel Techniques of Fabrication of High Performance Rocket Motor Cases

Download or read book The Evolution of Ultra-High Strength Steels, and Research on Materials and Various Novel Techniques of Fabrication of High Performance Rocket Motor Cases written by G. K. BHAT and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fine wires (0.005 in. diam) were drawn of 3 Al alloys, and effort was directed toward the production of Be wire. Study was continued of steel melting and casting techniques. Mechanical property tests of butt welds indicated that the addition of W facilitates the weldability of high tensile strength (300 ksi) steels. Studies are continuing on weld grain refinement with ultrasonic excitation. Filler wire evaluation was discontinued. Scale-model 3.5-in.-diam chambers heat treated to several strength levels were hydrotested. Rocoloy 270 showed considerable yielding (biaxial ductility) prior to fracture.