Understanding properties of a new high gamma' alloy processed in different solidification environment

了解在不同凝固环境下加工的新型高伽玛合金的性能

• 批准号: 580841-2022
• 负责人: Brochu, MathieuM
• 金额: $ 1.82万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=761063
• 关键词: Understanding; properties; new; gamma; alloy

High gamma prime Ni-based superalloys are challenging for manufacturing, particularly during solidification. Liburdi Turbine Services (LTS) is pioneering a new avenue to manufacture high gamma prime components with the direct optimization of chemical composition capable to survive solidification while possessing high strain age cracking resistance. LTS and McGill have previously studied two promising alloys, namely 4275 and 4280 while a 3rd generation of alloy, 4280W, has been recently patented and is foreseen to surpass the weldability, ductility and oxidation properties of 4275 and 4280. However, a systematic study must be performed to fully delineate the solidification behavior in rapid to non-equilibrium regimes, the response to heat treatment (HT) and the mechanical performance.The current project between LTS and Prof. Brochu aims to study the processing-properties- microstructure relationships of a newly patented alloys: 4280W. The project includes welding materials characterisation, gas tungsten arc welding, direct energy deposition and laser powder bed fusion, process optimisation, microstructure characterisation and HT response and oxidation, tensile and stress rupture testing. LTS will gain knowledge on the holistic manufacturing flowchart for 4280W leading to the ability to produce parts or perform repair of high gamma prime alloys for their customers.The project will train 1 PhD student and 1 part-time PDF, with the participation of 1 technician.

高伽玛镍基高温合金的制造具有挑战性，特别是在凝固过程中。 Liburdi Turbine Services (LTS) 正在开辟一条新途径，通过直接优化化学成分来制造高伽马组件，这些组件能够在凝固过程中幸存下来，同时具有高应变时效抗裂性。 LTS 和 McGill 此前研究了两种有前途的合金，即 4275 和 4280，而第三代合金 4280W 最近已获得专利，预计将超越 4275 和 4280 的可焊性、延展性和氧化性能。但是，必须进行系统研究进行以充分描述快速到非平衡状态下的凝固行为、对热处理 (HT) 的响应和机械性能。 LTS 和 Brochu 教授当前的项目旨在研究新专利合金 4280W 的加工性能-微观结构关系。该项目包括焊接材料表征、钨极气体保护焊、直接能量沉积和激光粉末床熔合、工艺优化、微观结构表征以及高温响应和氧化、拉伸和应力断裂测试。 LTS 将获得有关 4280W 整体制造流程的知识，从而能够为其客户生产零件或执行高伽马合金维修。该项目将培训 1 名博士生和 1 名兼职 PDF 人员，并有 1 名技术人员参与。