Martensitic/ferritic steels as container materials for liquid mercury target of ESS [electronic resource]
Saved in:
| Online Access: |
Online Access (via OSTI) |
|---|---|
| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Oak Ridge, Tenn. : Oak Ridge, Tenn. :
Oak Ridge National Laboratory. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
1996.
|
| Subjects: |
| Abstract: | In the previous report, the suitability of steels as the ESS liquid mercury target container material was discussed on the basis of the existing database on conventional austenitic and martensitic/ferritic steels, especially on their representatives, solution annealed 316 stainless steel (SA 316) and Sandvik HT-9 martensitic steel (HT-9). Compared to solution annealed austenitic stainless steels, martensitic/ferritic steels have superior properties in terms of strength, thermal conductivity, thermal expansion, mercury corrosion resistance, void swelling and irradiation creep resistance. The main limitation for conventional martensitic/ferritic steels (CMFS) is embrittlement after low temperature (≤380°C) irradiation. The ductile-brittle transition temperature (DBTT) can increase as much as 250 to 300°C and the upper-shelf energy (USE), at the same time, reduce more than 50%. This makes the application temperature range of CMFS is likely between 300°C to 500°C. For the present target design concept, the temperature at the container will be likely controlled in a temperature range between 180°C to 330°C. Hence, CMFS seem to be difficult to apply. However, solution annealed austenitic stainless steels are also difficult to apply as the maximum stress level at the container will be higher than the design stress. The solution to the problem is very likely to use advanced low-activation martensitic/ferritic steels (LAMS) developed by the fusion materials community though the present database on the materials is still very limited. |
|---|---|
| Item Description: | Published through SciTech Connect. 06/01/1996. "conf-9603171--" "DE96014047" International workshop on the technology and thermo hydrolics of heavy liquid metals (Hg,Pb,Bi, and their Eutectics), Schruns (Austria), 25-28 Mar 1996. Dai, Y. [Paul Scherrer Institut, Villigen (Switzerland)] |
| Physical Description: | pp. 6.27-6.39 : digital, PDF file. |