Research Output per year
Personal profile
Research interests
I am a Principal Scientist at VTT with more than 35 years of experience in nuclear materials. My main expertiese is behaviour of materials in nuclear environments and failure analyses. I am familiar with SEM, EDS, hardness, optical microscopy and other analyses techniques.
Nuclear materials, failure analysis, microstructure, ageing, aging
Ydinvoimalaitosmateriaalit, vauriotutkimus, mikrorakenne, SEM, EDS, vanheneminen
Education/Academic qualification
Manufacturing and processing, Master, Helsinki University of Technology
Keywords
- TA Engineering (General). Civil engineering (General)
- nuclear materials
- failure analysis
- SEM
- ageing
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Research Output
Determination of T0 with Miniature C(T) Specimens for a High-Ni Weld Metal used in a Boiling Water Reactor Pressure Vessel
Sirkiä, L., Lydman, J., Ehrnstén, U. & Lindqvist, S., 2019, Baltica XI: International Conference on Life Management and Maintenance for Power Plants. VTT Technical Research Centre of Finland, 10 p.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Open Access
File
Electrochemical investigation of in-service thermal aging in two CF8M cast stainless steels
Huotilainen, C., Ivanchenko, M., Efsing, P. & Ehrnsten, U., Jul 2019, In : Journal of Nuclear Materials. 520, p. 34-40 7 p.Research output: Contribution to journal › Article
Impacts from VTT research on nuclear safety and radioactive waste management
Holt, E. (ed.), Kinnunen, P. (ed.), Sevelev, D. (ed.) & Ehrnstén, U., 2019, VTT Technical Research Centre of Finland. 115 p.Research output: Book/Report › Book (author)
Microstructural characterization of thermally aged Barsebäck RPV head weld metal
Lydman, J., Hytönen, N., Que, Z., Ehrnstén, U. & Nevasmaa, P., 11 Aug 2019, VTT Technical Research Centre of Finland. 36 p. (VTT Research Report; No. VTT-R-01003-19).Research output: Book/Report › Report
Nanoindentation study of short-range ordering
Mouginot, R., Sarikka, T., Ehrnstén, U. & Hänninen, H., 25 Jan 2019, In : Materials Research Express. 6, 4, 8 p., 045052.Research output: Contribution to journal › Article
Open Access