Accession Number : AD0851958

Title :   Development of Improved Biaxial Strength in Titanium Alloy Rocket Motor Cases Through Texture Hardening.

Descriptive Note : Final rept. 1 Mar 67-15 Feb 69,

Corporate Author : LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA PALO ALTO RESEARCH LAB

Personal Author(s) : Fitzpatrick, J. M. ; Crossley, F. A. ; Hoffman, O. ; Tsui, E. Y. W. ; Lewis, R. E.

Report Date : FEB 1969

Pagination or Media Count : 94

Abstract : The report summarizes the results of a four-phase program, the objective of which was to demonstrate the merit of a heat-treatable, texture-hardened, titanium alloy for use in rocket motor cases. The details of hydroburst testing of a 17 in. -diameter spherical pressure vessel are included. Sheet rolling and heat-treating procedures were investigated to determine suitable processes by which texture-hardened sheet could be produced. An investigation of the shear-forming process for producing suitably textured Ti-6Al-4V cylinders of 18-in. diameter was made. A welding study to determine the effects of different welding procedures on the texture Tungsten-inert-gas and electron-beam techniques were employed. A demonstration of a spherical tank fabrication and hydroburst test was made using texture-hardened Ti-6Al-4V alloy. (Author)

Descriptors :   (*ROCKET ENGINE CASES, STRUCTURAL PROPERTIES), (*TITANIUM ALLOYS, HARDENING), DRAWING(FORMING), PRESSURE VESSELS, HYDROSTATICS, RUPTURE, LOADS(FORCES), ANISOTROPY, STRESSES, ROLLING(METALLURGY), ELECTRON BEAM WELDING, INERT GAS WELDING, METALLOGRAPHY, MEMBRANES, TENSILE PROPERTIES, FRACTURE(MECHANICS).

Subject Categories : Metallurgy and Metallography
      Rockets

Distribution Statement : APPROVED FOR PUBLIC RELEASE