Additive manufacturing of a novel low-cost titanium alloy: enhancement of processing and properties for aerospace applications

金属部件的增材制造是一项新兴技术，将改变加拿大的制造业格局。加拿大在这一领域取得成功的关键是开发新材料，这些材料是针对增材制造过程中发生的复杂物理过程量身定制的。该项目将展示一种低成本β钛合金的潜力，该合金非常适合AM过程中存在的快速凝固条件。通过β-Ti合金实现的增强强度与通过使用预混合元素粉末/粉末冶金实现的成本节约相结合，有可能在未来10年内颠覆航空航天工业的部件设计。 拟议的研究分为两个研究领域。第一个是开发通过电弧增材制造然后热处理生产的感兴趣合金的结构-工艺-性能关系。二是加工过程中组织演化与力学性能演化的对应模型。拟议研究计划的共同目标是确定通过增材制造生产β-钛合金的最佳工艺条件。两名博士生将通过这个大学-产业合作研究项目进行培训。

Additive manufacturing of metal components is an emerging technology that will transform Canada's manufacturing landscape. Integral to Canada's success in this area is the development of new materials that are tailored to the complex physical processes occurring during AM. This project will demonstrate the potential of a low-cost beta titanium alloy that is ideally suited for the rapid solidification conditions present during AM. The enhanced strength achieved through beta-Ti alloys combined with the cost savings realized through the use of pre-mixed elemental powders/powder metallurgy has the potential to disrupt component design in the aerospace industry within the next 10 years. The proposed research is divided into two areas of study. The first is the development of a structure-process-properties relationship for the alloy of interest produced through wire-arc-additive manufacturing and then heat treating. The second is the corresponding modelling of structure evolution and mechanical property evolution during processing. The joint goal of the proposed research program is to identify the optimal processing conditions for producing beta-titanium alloys via additive manufacturing. Two PhD students will be trained through this university-industry collaborative research project.