Accession Number:

AD0775599

Title:

The Effect of Filler Metal Chemistry and Heat Treatment on the Weldability of the Ti-6Al-2.5Mo Alloy.

Descriptive Note:

Research and development rept.,

Corporate Author:

NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER ANNAPOLIS MD

Personal Author(s):

Report Date:

1974-02-01

Pagination or Media Count:

70.0

Abstract:

Determination was made of the effects of combined variations in weld-metal chemistry and postweld heat treatment on the mechanical properties and sea-water stress-corrosion-cracking properties of Ti-6Al-2.5Mo weldments. The composition range studied included 4 to 7 aluminum and 0.5 to 2.5 molybdenum. Good fracture toughness and stress-corrosion-cracking resistance for weld metal in the Ti-Al-Mo-O alloy system are achieved at the 110,000 pounds per square inch yield strength level. No degradation of properties was produced in the heat-affected zone of Ti-6Al-2.5Mo weldments. The results of this investigation indicate that a tougher and more ductile Ti-100 alloy weldment could be developed through control of microstructure in the Ti-Al-Mo-O and Ti-Al-V-O alloy systems. Modified author abstract

Subject Categories:

  • Properties of Metals and Alloys
  • Submarine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE