Projects 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
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Manufacturing and processing, Master, Helsinki University of Technology
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Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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INCEFA-SCALE: INcreasing safety in NPPs by Covering gaps in Environmental Fatigue Assessment - focusing on gaps between laboratory data and component SCALE
Huotilainen, C., Seppänen, T., Que, Z., Ehrnstén, U. & Lydman, J.
1/10/20 → 30/09/25
Project: EU project
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TAAN: Thermal Aging of Alloy 690 and a high Ni Alloy
Huotilainen, C., Que, Z. & Ehrnstén, U.
1/01/19 → 31/12/19
Project: Other
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INCEFA-PLUS: Increasing safety in NPPs by Covering gaps in Environmental Fatigue Assessment
Huotilainen, C., Seppänen, T., Que, Z., Lydman, J. & Ehrnstén, U.
1/07/15 → 31/10/20
Project: EU project
Research output
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Effect of machining on near surface microstructure and the observation of martensite at the fatigue crack tip in PWR environment of 304L stainless steel
Que, Z., Huotilainen, C., Seppänen, T., Lydman, J. & Ehrnstén, U., Jan 2022, In: Journal of Nuclear Materials. 558, 153399.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile4 Citations (Scopus)64 Downloads (Pure) -
Stress corrosion cracking initiation susceptibility of Alloy 182 with different surface treatments
Que, Z., Saario, T., Toivonen, A. & Ehrnstén, U., Mar 2022, In: Corrosion Science. 196, 110037.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile3 Citations (Scopus)20 Downloads (Pure) -
Creep Properties of 9Cr and 14Cr ODS Tubes Tested by Inner Gas Pressure
Sornin, D., Ehrnstén, U., Mozzani, N., Rantala, J., Walter, M., Hobt, A., Aktaa, J., Oñorbe, E., Hernandez-Mayoral, M., Ulbricht, A., Gicquel, S., Frank, L. & de Carlan, Y., Aug 2021, In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 52, p. 3541-3552 12 p.Research output: Contribution to journal › Article › Scientific › peer-review
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Effect of weld microstructure on brittle fracture initiation in the thermally-aged boiling water reactor pressure vessel head weld metal
Hytönen, N., Que, Z., Arffman, P., Lydman, J., Nevasmaa, P., Ehrnstén, U. & Efsing, P., 16 May 2021, In: International Journal of Minerals, Metallurgy and Materials. 28, 5, p. 867-876 10 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access2 Citations (Scopus) -
Effects of Surface Treatments on Environmentally-Assisted Cracking Susceptibility of Alloy 182 in BWR Environment
Que, Z., Volpe, L., Toivonen, A., Burke, M. G., Scenini, F. & Ehrnstén, U., 1 Aug 2021, In: Corrosion Science. 188, 109555.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile7 Citations (Scopus)19 Downloads (Pure)