ARLINGTON, Va. - Steel may have met its match: An Office of Naval Research (ONR)-funded project will produce a full-size ship hull section made entirely with marine-grade titanium, using a welding innovation which could help bring titanium into future Navy ship construction, officials announced. The contractor team building this section recently completed the industry's longest friction-stir titanium alloy welds and aims to complete the ship hull section this summer. Friction-stir welds more than 17 feet long joined the titanium alloy plates for the section's deck. "This fast, effective friction-stir weld technique is now an affordable manufacturing process…