Ti-6A1-4V for Marine Uses
The Ti-6A1-4V alloy is recognized as the most important alloy in the titanium industry. Because it is perhaps the most versatile grade of titanium ever developed it has grown in application until it has earned the nickname “workhorse” of titanium alloys. The Naval Sea Systems Command (NAVSEA) recognized the potential of Ti-6A1-4V and has sponsored work at the David W. Taylor Naval Ship R $ D Center (DTNSRDC), the Naval Research Laboratory (NRL), and industry to investigate it for possible marine uses. A material for marine applications should possess good toughness and insensitivity to the marine environment. Properties such as seawater stress corrosion resistance and seawater fatigue resistance are of major concern. The NAVSEA investigations have been aimed at not only investigating these properties but where possible developing them to their maximum potential. Areas of interest have included plate development, weldment development, forming effects, and castings. This paper is a brief summary of some of the more significant NAVSEA investigations performed on the Ti-6A1-4V alloy in its development for marine applications.
KeywordsOxygen Content Fatigue Strength Post Weld Heat Treatment Beam Specimen Naval Research Laboratory
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