NSUF 20-2990: The origin of exceptional IASCC resistance of the additively-manufactured stainless steel after hot isostatic pressing
The exceptional irradiation-assisted stress corrosion cracking (IASCC) resistance was observed and reported from the additively-manufactured (AM) 316L stainless steel after hot isostatic pressing (HIP) process through the completed DOE NEET project (DE-NE0008428). However, the fundamental mechanism is still unclear. This proposed NSUF RTE project seeks to conduct proton irradiation at the University of Michigan (UM) and TEM characterization at CAES to confirm the observation on different heats of AM materials and test one mechanistic hypothesis. The planned experiment will take 2 weeks of instrument time at UM and CAES and be completed in 4-6 months. Identifying the subtle changes in the AM material during HIPing that may lead to the exceptional IASCC resistance not only support the on-going development of nuclear specifications for additive manufacturing but also improve our basic understandings of IASCC. The further study of this phenomenon may also open a new pathway to develop IASCC resistant alloys (both AM and wrought) for nuclear applications.
Additional Info
| Field | Value |
|---|---|
| Abstract | The exceptional irradiation-assisted stress corrosion cracking (IASCC) resistance was observed and reported from the additively-manufactured (AM) 316L stainless steel after hot isostatic pressing (HIP) process through the completed DOE NEET project (DE-NE0008428). However, the fundamental mechanism is still unclear. This proposed NSUF RTE project seeks to conduct proton irradiation at the University of Michigan (UM) and TEM characterization at CAES to confirm the observation on different heats of AM materials and test one mechanistic hypothesis. The planned experiment will take 2 weeks of instrument time at UM and CAES and be completed in 4-6 months. Identifying the subtle changes in the AM material during HIPing that may lead to the exceptional IASCC resistance not only support the on-going development of nuclear specifications for additive manufacturing but also improve our basic understandings of IASCC. The further study of this phenomenon may also open a new pathway to develop IASCC resistant alloys (both AM and wrought) for nuclear applications. |
| Award Announced Date | 2020-02-05T14:19:08.577 |
| Awarded Institution | Idaho National Laboratory |
| Facility | Advanced Test Reactor |
| Facility Tech Lead | Alina Zackrone, Kevin Field, Yaqiao Wu |
| Irradiation Facility | Michigan Ion Beam Laboratory |
| PI | Xiaoyuan Lou |
| PI Email | [email protected] |
| Project Type | RTE |
| RTE Number | 2990 |