Ulla Ehrnstén

Principle Scientist

  • Phone+358405354057
1989 …2020

Research output per year

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Research Output

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Conference article
2016

Analytical examination of welds of surrogate and archive RPV materials

Ehrnstén, U., Autio, J-M., Ivanchenko, M., Nevasmaa, P. & Efsing, P., 2016. 20 p.

Research output: Contribution to conferenceConference articleScientific

Thermal Aging Induced Phase Transformations in Nuclear Grade Typr 316L Stainless Steel Weld Metals

Ivanchenko, M., Ehrnstén, U., Forsström, A., Hänninen, H. & Ballinger, R. G., 2016.

Research output: Contribution to conferenceConference articleScientific

2015

Effect of heat treatment and cold work on the ordening of alloy 690 at 475 °C

Mouginot, R., Sarikka, Heikkilä, M., Ehrnstén, U., Kim, Y. S., Sung, S. K. & Hänninen, H., 2015, p. 17.

Research output: Contribution to conferenceConference articleScientific

Factors affecting low temperature crack propagation (LTCP)

Ahonen, M., Ehrnstén, U., Saukkonen, T., Todoshchenko, O. & Hänninen, H., 2015. 18 p.

Research output: Contribution to conferenceConference articleScientific

IGSCC in a BWR steam line after 30 years of operation

Ehrnstén, U., Autio, J-M. & Holmström, P., 2015. 10 p.

Research output: Contribution to conferenceConference articleScientific

2013

Investigation of coatings, applied by PVD, for the corrosion protection of materials in supercritical water

Van Nieuwenhove, R., Balak, J., Toivonen, A., Penttilä, S. & Ehrnstén, U., 2013. 12 p.

Research output: Contribution to conferenceConference articleScientific

2011

Progress in material technology: Opportunities to improve efficiency in energy production

Auerkari, P., Ehrnstén, U., Rintamaa, R. & Tuurna, S., 2011, p. 5.1 - 5.17.

Research output: Contribution to conferenceConference articleScientific

2009

On ageing of nuclear materials and management and prevention

Ehrnstén, U., 2009.

Research output: Contribution to conferenceConference articleScientific

2000

Properties of cast Ti-stabilised stainless steel after long-term ageing

Ehrnsten, U., Karjalainen-Roikonen, P., Nenonen, P., Ahlstrand, R., Hietanen, O., Timofeev, B. & Blumin, A., 2000. 9 p.

Research output: Contribution to conferenceConference articleScientific

Transferability of fracture mechanical parameters - philosophy or physics

Wallin, K., Rintamaa, R. & Ehrnsten, U., 2000. 20 p.

Research output: Contribution to conferenceConference articleScientific

1996

Vacancy-creep model for EAC of brass

Aaltonen, P., Saario, T., Ehrnsten, U., Itäaho, M. & Hänninen, H., 1996.

Research output: Contribution to conferenceConference articleScientific

1994

Enrichment of chlorides on the metal surface in dry and aqueous high-temperature corrosion on boiler tubes

Mäkipää, M., Ehrnsten, U. & Hakkarainen, T., 1994. 19 p.

Research output: Contribution to conferenceConference articleScientific

1993

Embrittlement of a weld-seam a duplex stainless steel

Ehrnsten, U. & Nenonen, P., 1993, p. 81-82.

Research output: Contribution to conferenceConference articleScientific

Porosity of thin diamond-like carbon films deosited by an arc-discharge method

Koskinen, J., Ehrnsten, U., Mahiout, A., Lahtinen, R., Hirvonen, J-P. & Hannula, S-P., 1993. 16 p.

Research output: Contribution to conferenceConference articleScientific

1992

Virheet titaani-alumiininitridipinnoitteissa

Ehrnsten, U., 1992, p. 19-20.

Research output: Contribution to conferenceConference articleProfessional

1990

Static and cyclic crack growth of low alloy steels in simulated high-oxygen reactor water

Hänninen, H., Aaltonen, P., Rintamaa, R., Arilahti, E. & Ehrnsten, U., 1990. 34 p.

Research output: Contribution to conferenceConference articleScientific

1989

Effect of thiosulphate ions on the pitting corrosion of stainless steels in paper machine environments

Varjonen, O., Ehrnsten, U. & Hakkarainen, T., 1989, p. 303-313.

Research output: Contribution to conferenceConference articleScientific