About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Accelerated Discovery and Qualification of Nuclear Materials for Energy Applications
|
Presentation Title |
Compositionally Graded Bulk Specimen: A High-throughput Approach for Nuclear Alloy Development and Qualification |
Author(s) |
Xiaoyuan Lou, Jingfan Yang, Xiang Liu, Miao Song, Lingfeng He, Yongfeng Zhang, Daniel Schwen |
On-Site Speaker (Planned) |
Xiaoyuan Lou |
Abstract Scope |
This study demonstrated the use of compositionally graded specimens, fabricated by laser additive manufacturing (AM) and post-AM treatment, to accelerate the evaluations of irradiated and unirradiated materials in nuclear environments. The low-level doping (<1 wt%) of minor refractory elements in austenitic stainless steel was selected as the topic of interest, not only because of the difficulty of controlling accurate composition gradient at this level but also due to its scientific significance related to the effects of atomic level heterogeneity. In conjunction with the composition gradient, the study confirmed wrought-like microstructure could be achieved across the sample. The grain structure, composition, and hardness as a function of processing conditions will be reported. The case studies for nuclear specific properties include radiation hardening, oxidation, swelling, and irradiation assisted stress corrosion cracking (IASCC). The advantages and challenges of using compositionally graded design for high-throughput nuclear alloy development and qualification will be discussed. |
Proceedings Inclusion? |
Planned: |