Collaborative Research and Development (CR&D). Delivery Order 0031: Basic Research and Development of Ti-B Alloys

摘要

This research in support of the Air Force Research Laboratory, Materials and Manufacturing Directorate was conducted at Wright-Patterson AFB, Ohio from 2 September 2004 through 5 September 2006. Studies on important Ti alloys modified with different boron levels were conducted to advance the technology of Ti-B alloys. Fundamental scientific understanding on effects of boron addition on the microstructural characteristics of titanium alloys was obtained. Influence of boron addition on the thermomechanical processing (TMP) response of Ti alloys was studied via well-thought and conducted experiments. Benefits offered by boron enhancement in terms of reduction or elimination of expensive TMP steps were explored and novel processing sequences were suggested to improve the affordability of titanium aerospace components. Efforts to scale- up from lab-scale to production-scale were initiated and key features to be measured and verified for technology transition were identified. Collaborative efforts with extramural teams working in related research areas were established to augment the RX in-house research effort. The research findings were presented at International conferences and published in peer-reviewed journals. These studies provided paths for successful design of novel titanium microstructures that possess useful property combinations for static as well as fracture-critical applications.