Accession Number:

AD0258355

Title:

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

Descriptive Note:

Corporate Author:

MELLON INST PITTSBURGH PA

Personal Author(s):

Report Date:

1961-05-31

Pagination or Media Count:

1.0

Abstract:

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.

Descriptors:

• *ROCKET ENGINE CASES
• *ROCKET ENGINES
• *STEEL
• ARC WELDING
• BERYLLIUM
• CASTING
• DRAWING(FORMING)
• MELTING
• WELDING
• WELDS
• WIRE

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE