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Accession Number:
AD0269679
Title:
RESEARCH AND DEVELOPMENT OF TITANIUM ROCKET MOTOR CASE
Corporate Author:
PRD ELECTRONICS INC BROOKLYN N Y
Report Date:
1961-10-31
Abstract:
The sustained notched tensile strength of coldrolled and aged sheet stock at the 180,000 psi yield strength level was lower in the -35 F to 200 F temperature range for a H content of 70 than for 200 ppm strengths were equivalent at 400 F. Press-forged pancakes with a 0.15-O content were capable of attaining the 200,000 psi yield strength level by direct aging at 900 F. Multiple-pass tungsten inert gas TIG welding produced no improvement in notched tensile strength or toughness as compared with the single-pass method despite reduced grain size and increased bend ductility electron-beam welding yielded slight improvements as compared with TIG welding. Closed-die press forging of subscale 14-in.-diam domes by the pancake and preform technique at 1650 F and 1700 F produces superior tensile ductility at the 180,000 psi yield strength level as compared with similar forging at 1850 and 2000 F. Author
Pages:
0001
File Size:
0.00MB
