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
Fingerprint Dive into the research topics where Ulla Ehrnstén is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
- 22 Similar Profiles
Welds
Engineering & Materials Science
Dissimilar metals
Engineering & Materials Science
Stainless steel
Engineering & Materials Science
Stress corrosion cracking
Engineering & Materials Science
Thermal aging
Engineering & Materials Science
Crack propagation
Engineering & Materials Science
Austenitic stainless steel
Engineering & Materials Science
Crack initiation
Engineering & Materials Science
Network
Recent external collaboration on country level. Dive into details by clicking on the dots.
Research Output 1989 2019
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 › Scientific › peer-review
Thermal aging
Stainless Steel
casts
stainless steels
Stainless steel
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 › Scientific › peer-review
Open Access
Nanoindentation
Hardness
Lead alloys
Thermal aging
Metallography
Development of short-range order and intergranular carbide precipitation in Alloy 690 TT upon thermal ageing
Mouginot, R., Sarikka, T., Heikkilä, M., Ivanchenko, M., Tapper, U., Ehrnstén, U. & Hänninen, H., 1 Jan 2018, Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. Paraventi, D., Wright, M. & Jackson, J. H. (eds.). Springer, p. 321-334 14 p. (Minerals, Metals and Materials Series, Vol. Part F9).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Thermal aging
Carbides
Stress corrosion cracking
Aging of materials
Water
Effect of thermal aging on fracture mechanical and microstructural properties of Alloy 52 narrow-gap safe-end dissimilar metal weld
Ahonen, M., Sarikka, T., Mouginot, R., Lindqvist, S., Lydman, J., Ehrnsten, U., Nevasmaa, P. & Hänninen, H., 15 Sep 2018, (Accepted/In press) Proceedings of “Fontevraud 9 - Contribution of Materials Investigation and Operating Experience to Light Water NPPs Safety, Performance and Reliability”, Avignon, 17-20 September 2018. France, 2018.. 13 p.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
Effect of thermal aging on fracture mechanical properties and crack propagation behavior of alloy 52 narrow-gap dissimilar metal weld
Ahonen, M., Lindqvist, S., Sarikka, T., Lydman, J., Mouginot, R., Ehrnstén, U., Nevasmaa, P. & Hänninen, H., 1 Jan 2018, Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. Jackson, J. H., Paraventi, D. & Wright, M. (eds.). Springer, Vol. 2. p. 733-747 15 p. (Minerals, Metals and Materials Series; No. Part F11).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
Dissimilar metals
Thermal aging
Crack propagation
Welds
Fracture toughness