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Mika Siren

Senior Scientist, MSc.

1991 …2019
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Research Output 1991 2019

1991

Diffuusioliittäminen Suomessa aloitetaan VTT:ssa

Translated title of the contribution: Diffusion bonding starts at VTT first in FinlandHeikinheimo, L. & Siren, M., 1991, In : Hitsaustekniikka. 41, 4, p. 5 - 9

Research output: Contribution to journalArticleProfessional

1993

Alumiinioksidin liittäminen tyhjöjuottamalla

Translated title of the contribution: Joining of alumina by vacuum brazingHeikinheimo, L., Siren, M. & Kauppinen, P., 1993, Espoo: VTT Technical Research Centre of Finland. 81 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1495).

Research output: Book/ReportReport

aluminum oxide

Keraamisen hiomakivisegmentin liittäminen metalliin tyhjöjuottamalla

Siren, M. & Heikinheimo, L., 1993, Espoo: VTT Technical Research Centre of Finland. 18 p. (Valtion teknillinen tutkimuskeskus: Konepajan tuotantotekniikan laboratorio. Raportti; No. 25).

Research output: Book/ReportReport

Piinitridin liittäminen metalleihin tyhjöjuottamalla

Translated title of the contribution: Joining of silicon nitride to metals with vacuum brazingSiren, M. & Heikinheimo, L., 1993, Espoo: VTT Technical Research Centre of Finland. 44 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1499).

Research output: Book/ReportReport

palladium
mink
metals
silicon nitride

Tyhjötiiviin alumiinioksidi-Ni-superseosliitoksen valmistaminen tyhjöjuottamalla

Siren, M. & Heikinheimo, L., 1993, Espoo: VTT Technical Research Centre of Finland. 13 p. (Valtion teknillinen tutkimuskeskus: Konepajan tuotantotekniikan laboratorio. Raportti; No. 28).

Research output: Book/ReportReport

1994

Tyhjöliittämismenetelmien käyttö ruiskupuristusmuotin valmistuksessa

Vartia, P., Siren, M. & Nieminen, I., 1994, Espoo: VTT Technical Research Centre of Finland. 21 p. (VALB; No. 55).

Research output: Book/ReportReport

1995

Bonding of advanced multimaterial components

Heikinheimo, L. & Siren, M., 1995, Proceedings of the International Conference on the Joining of Materials. Helsingör, p. 158 - 169

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Characterization of the diffusion bonded interface between Ti and Al

Cam, G., Heikinheimo, L., Siren, M., Dobi, D. & Kocak, M., 1995, Brazing, high temperature brazing and diffusion welding. Dusseldorf, p. 233-238 (DVS-Berichte, Vol. 166).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Metal-ceramic joints for aggressive environments

Heikinheimo, L., Siren, M., Kaunisto, T. & Kauppinen, P., 1995, Brazing, high temperature brazing and diffusion welding. Dusseldorf, p. 120 - 125 (DVS-Berichte, Vol. 166).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1996

Microstructure and fracture toughness aspects of diffusion bonded interface between Ti and Al

Cam, G., Heikinheimo, L., Siren, M., Dobi, D. & Kocak, M., 1996, Trends in welding research. ASM International, p. 569 - 578

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1 Citation (Scopus)

The evaluation of integrity of ceramic-metal joints and ceramic coatings by C-mode acoustic microscopy

Kauppinen, P., Jeskanen, H., Heikinheimo, L., Siren, M. & Auerkari, P., 1996, In : Materials Science Forum. 210 - 213, p. 767 - 773

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

1997

AI2O3 to Ni-superalloy diffusion bonded FG-joints for high temperature applications

Heikinheimo, L., Siren, M. & Gasik, M., 1997, Proceedings of the 4th International Symposium on Functionally Graded Materials: Functionally Graded Materials 1996. Shiota, I. & Miyamoto, Y. (eds.). Amsterdam: Elsevier, p. 313 - 318

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Fracture behaviour of diffusion bonded bi-material (Ti-Al) joints

Cam, G., Kocak, M., Dobi, D., Heikinheimo, L. & Siren, M., 1997, Mis-Matching of Interfaces and Welds. Schwalbe, K-H. & Kocak, M. (eds.). Geesthacht, p. 435-450 15

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

14 Citations (Scopus)

Fracture behaviour of diffusion bonded bimaterial Ti-Al joints

Cam, G., Kocak, M., Dobi, D., Heikinheimo, L. & Siren, M., 1997, In : Science and Technology of Welding and Joining. 2, 3, p. 95 - 101 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Titanium
Ductile fracture
Metals
Aluminum
Metal foil

Performance of alumina-alumina and alumina-metal joints

Heikinheimo, L., Siren, M., Kauppinen, P. & Auerkari, P., 1997, Mis-Matching of Interfaces and Welds. Schwalbe, K-H. & Kocak, M. (eds.). Geesthacht, p. 451 - 462

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1998

Brazing and joint properties of an iron based ODS alloy

Siren, M., Holmström, S., Heikinheimo, L. & Auerkari, P., 1998, 5th International Conference on Brazing, High Temperature Brazing and Diffusion Bonding. Dusseldorf, p. 80 - 84 (DVS-Berichte, Vol. 192).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Diffusion bonding of alumina based CMC to metals

Heikinheimo, L., Siren, M. & Gasik, M., 1998. 2 p.

Research output: Contribution to conferenceOther conference contributionScientific

High temperature bonding of alumina based CMC to metals

Heikinheimo, L., Gasik, M., Siren, M. & Kleer, G., 1998, 5th International Conference on Brazing, High Temperature Brazing and Diffusion Bonding. p. 301-304 (DVS-Berichte, Vol. 192).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Joint performance and structure of an iron based ODS alloy at high temperatures

Holmström, S., Heikinheimo, L., Siren, M. & Auerkari, P., 1998, Proceedings of the International Conference: Trends in Welding Research. ASM International, p. 651 - 656

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Performance of an iron based ods alloy in a boiler environment

Holmström, S., Siren, M., Heikinheimo, L., Auerkari, P., Varmavuo, J. & Saarinen, R., 1998, Proceedings of the 6th Liège Conference : Materials for Advanced Power Engineering 1998. Jülich, Vol. 2. p. 769-777

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Performance of an ODS material in high temperature service

Holmström, S., Siren, M., Auerkari, P. & Heikinheimo, L., 1998, VTT Technical Research Centre of Finland. 44 p. (VTT Research Report; No. VALB292).

Research output: Book/ReportReport

1999

Manufacture and characterisation of brazed joints in gamma-TiAl

Siren, M., Bohm, K-H. & Kocak, M., 1999, International Conference on Efficient Welding in Industrial Applications . Martikainen, J. & Eskelinen, H. (eds.). Lappeenranta: Lappeenranta University of Technology, 12 p. (Acta Universitatis Lappeenrantaensis; No. 85).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

2000

Brazing of an iron based ODS alloy and joint performance and structure

Holmström, S., Heikinheimo, L., Siren, M. & Auerkari, P., 2000, In : Welding in the World. 44, 5, p. 15 - 19 5 p.

Research output: Contribution to journalArticleScientificpeer-review

Brazing of y-TiAl for high temperature applications

Siren, M., Bohm, K-H., Venzke, V. & Kocak, M., 2000, Intermetallics and Superalloys: EUROMAT 99. Morris, D. G., Naka, S. & Caron, P. (eds.). Wiley, Vol. 10. p. 277 - 282

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Kitkahitsaus pyörivällä työkalulla - FSW - seminaarimatka Ruotsiin

Mononen, J. & Siren, M., 2000, In : Hitsaustekniikka. 50, 2, p. 26 - 27

Research output: Contribution to journalArticleProfessional

2001

FSW- ja MIG-hitsattujen paneelien kustannusvertailu

Mononen, J., Siren, M. & Hänninen, H., 2001. 7 p.

Research output: Contribution to conferenceConference articleProfessional

FSW-teknologian käyttösovellukset Suomessa: loppuraportti

Translated title of the contribution: FSW applications in Finland : final reportSiren, M. & Mononen, J., 2001, Espoo: VTT Technical Research Centre of Finland. 13 p. (VTT Tutkimusraportti; No. BVAL22-011158).

Research output: Book/ReportReport

Hot isostatic pressing of nickel alloy composite compound structures

Kosonen, T., Siren, M. & Hannula, S-P., 2001, Proceedings of the Eighth Annual International Conference on Composites Engineering. Hui, D. (ed.). p. 493 - 494

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Kitkahitsaus pyörivällä työkalulla - FSW: Loppuraportti

Siren, M. & Mononen, J., 2001, Espoo: VTT Technical Research Centre of Finland. 11 p. (VTT Tutkimusraportti; No. BVAL22-011126).

Research output: Book/ReportReport

Stir going strong: FSW-teknologiaa Yhdysvalloissa

Siren, M., 2001, In : Hitsaustekniikka. 51, 4, p. 10 - 16

Research output: Contribution to journalArticleProfessional

2003

Kalottikennorakenne - etuna joustava piensarjavalmistus

Lohtander, M., Varis, J., Karppi, R., Siren, M., Kosonen, T. & Larkiola, J., 2003, In : Ohutlevy. 1, p. 16 - 21

Research output: Contribution to journalArticleProfessional

Kalottikennot: sovelluskohtaisesti räätälöitävä kennorakenne, KALOTTI

Karppi, R., Larkiola, J., Siren, M., Kosonen, T., Varis, J. & Lohtander, M., 2003, KENNO - Kevyet levyt -teknologiaohjelma 1998-2002: loppuraportti. Helsinki: TEKES, p. 43 - 46 (Tekes. Teknologiaohjelmaraportti; No. 2/2003).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Suomen Hitsaus- ja liittämisinstituutti

Karppi, R., Leino, K., Poutiainen, I., Siren, M., Suoranta, R., Tikka, E. & Vilpas, M., 2003, In : Hitsaustekniikka. 53, 2, p. 19 - 25

Research output: Contribution to journalArticleProfessional

2004

Preliminary studies for establishing acceptance criteria for FSW joints using ultrasonic inspection

Api, M. & Siren, M., 2004, Proceedings of the Finnish-German-Japanese Joint International Seminar on Mechanical and Metallurgical Approaches to New Joining Process. Toyoda, M. & Nishimoto, K. (eds.). Osaka: Osaka University, p. 12 - 21

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

2008

Friction stir welding, STIR: Final report

Mononen, J., Savolainen, K., Saukkonen, T., Hänninen, H., Api, M., Keinänen, H., Martikainen, H., Tervo, J. & Sirén, M., 2008, Espoo: Helsinki University of Technology. 97 p. (Teknillinen korkeakoulu: Koneenrakennustekniikan laitos; No. 2).

Research output: Book/ReportReport

Innovative stainless steel applications in transport vehicles

Sirén, M., Taulavuori, T., de Wispelaere, N., Rizzo, L., Thys, R., Vliegen, R., van Hecke, B., Pauly, T., Kosmac, A., Sánchez, R., Säynevirta, J., Hänninen, H., Pohjanne, P., Tonteri, H. & Ala-Outinen, T., 2008, 125 p.

Research output: Book/ReportReport

Lujien terästen hitsaaminen

Nevasmaa, P., Sirén, M., Karppi, R., Laukkanen, A. & Wallin, K., 2008. 45 p.

Research output: Contribution to conferenceOther conference contributionProfessional

2009

Korkealujuuksisten terästen murtumismekaaninen eheystarkastelu 'FAD' lähestymistapaa käyttäen

Laukkanen, A., Nevasmaa, P. & Sirén, M., 2009.

Research output: Contribution to conferenceConference articleProfessional

2010

Design, manufacture and properties of the novel OpencellT metal sandwich panel

Valente, A., Sirén, M. & Säynäjäkangas, J., 2010, p. 180-181.

Research output: Contribution to conferenceConference articleScientific

Influence of weld strength mis-match on failure behaviour of strain hardened austenitic stainless steel

Nevasmaa, P., Laukkanen, A., Sirén, M., Somani, M. & Karjalainen, P., 2010, Proceedings: 2nd International Conference Super High Strength Steels (SHSS), Peschiera del Garda (Verona), Italy, 17 - 20.10.2010. Associazione Italiana di Metallurgia AIM, 12 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Influence of weld strength mis-match on failure behaviour of strain hardened austentic stainless steel

Nevasmaa, P., Laukkanen, A., Andersson, T. & Sirén, M., 2010. 12 p.

Research output: Contribution to conferenceConference articleProfessional

2011

Influence of weld undermatching strength (mis-match) on limit load and failure behavior of strain hardened austenitic stainless steel

Nevasmaa, P., Laukkanen, A. & Sirén, M., 2011, Proceedings: 7th European Stainless Steel Conference - Science and Market, Como, Italy 21 - 23.9.2011. Associazione Italiana di Metallurgia AIM, 33

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Load limits
Austenitic stainless steel
Welds
Structural integrity
Gas metal arc welding

Innovative stainless steel applications in transport vehicles

Sirén, M., de Wispelaere, N., Rizzo, L., Pauly, T., Kosmac, A., Taulavuori, T., Sanchez, R., Vliegen, R., Van Hecke, B., Säynevirta, J. & Hänninen, H., 2011, Luxembourg: European Commission EC. (Research Fund for Coal and Steel series, EUR 24218).

Research output: Book/ReportReport

Technical presentations
Stainless steel
Feedback
Steel structures
High strength steel

Laser-based welding technology in VTT and Finland: Case: Laser and hybrid welding of thick section stainless steels

Sirén, M., Kujanpää, V. & Karhu, M., 2011, p. 3-21.

Research output: Contribution to conferenceConference articleScientific

Novel OpencellT metal sandwich panel concept: design, manufacture and properties

Sirén, M., Valente, A. & Säynäjäkangas, J., 2011, Proceedings : 7th European Stainless Steel Conference - Science and Market, Como, Italy 21 - 23.9.2011. Associazione Italiana di Metallurgia AIM

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Metals
Stiffness
Fatigue of materials

Pk-yritysten ruostumattoman teräksen jatkojalostusmahdollisuudet Suomessa

Apilo, T., Corander, H., Huikuri, T., Huovinen, T., Karhu, M., Kauppi, T., Kujanpää, V., Larkiola, J., Linna, J., Savinainen, T., Sirén, M. & Toppila, R., 2011, Kemi: Kemi-Tornion ammattikorkeakoulu. 133 p. (Kemi-Tornion ammatti-korkeakoulun julkaisuja. Sarja B. Raportit ja selvitykset; No. 9/2011).

Research output: Book/ReportReport

Open Access
2012

New generation ferritic and duplex stainless steels: Preliminary study on mechanical and in-service properties of welded joints

Sirén, M., 2012.

Research output: Contribution to conferenceOther conference contributionScientific

Welds
Stainless steel
Pitting
Microhardness
Gas metal arc welding