Ellen Berghof-Hasselbächer

Metallography

„Most causes of damage can already be classified by light optical microscopy by simple application of classical metallography on the cross section. In special cases, however, only the combination with additional analytical methods, which we offer you in addition, leads to a complete understanding.
We always guarantee you a systematic assessment of your technical damage."

Biography

since 1998

Head of the department Metallography in the working group "High Temperature-Materials" of the DECHEMA Research Institute (former Karl-Winnacker-Institut), Frankfurt am Main, Germany

1996 – 1998

Metallographer at Metalloplan GmbH, Company for Metallographic Services and Quality Control, Weilrod, Germany

1985 – 1995

Metallographer at Metallgesellschaft AG (by the year 1994 Metall-Laboratorium GmbH), Frankfurt am Main, Germany

1982 – 1985

Apprenticeship as a physics laboratory technician in the central laboratory of Metallgesellschaft AG, Frankfurt am Main, Germany

Key Activities

  • Failure analysis in the fields of:
    Petrochemistry
    Automobile and aviation industry
    Chemical equipment manufacturing
    Machinery and plant engineering
    High Temperature Materials
    Low and high alloyed steels
    Ni-base alloys
    Heat resistant centrifugally cast alloys
    Titanium aluminides
    Ceramics
    Diffusion Coatings
    Thermal Barrier Coatings (TBC)
  • Damage mechanisms
    High temperature corrosion:
    Oxidation
    Sulfidation
    Nitridation
    Carburization
    Metal Dusting
    Chlorine corrosion
    Molten salt corrosion
    Sigma-Phase embrittlement
    Thermo-mechanical fatigue (TMF)
    Stress relaxation cracking
    Aqueous corrosion:
    Pitting corrosion
    Selective corrosion
    Contact- and crevice corrosion
    Intergranular corrosion
    Dew point corrosion
    Stress corrosion cracking and corrosion fatigue
    Erosion
    Cavitation
    Fretting corrosion
    Other causes of damage:
    Hydrogen embrittlement
    Friction and wear
    Mechanical induced (overload failure, fatigue fracture)
    Thermal induced (creep, weld cracking, hot cracking, hardness cracking, thermal shock)
  • Investigation Techniques
    Conventional Metallography
    Water-free sample preparation to detect highly volatile metal chlorine compounds
    Quantitative Image Analysis
    SEM – EDS, EPMA-WDS, XRD
    Spark emission spectrometry (OES)
    Small load and microhardness testing
    Nanohardness indentation

Publications

Books
E. Berghof-Hasselbächer, R. Durham, M. Schütze, M. Galetz, G. Schmidt, John J. Hoffman
Atlas of Microstructures II
Materials Technology Institute, St. Louis 2014, ISBN 978-1-57698-061-3

E. Berghof-Hasselbächer, M. Schütze, M. Schorr, P. Gawenda, John J. Hoffman
Atlas of Microstructures
Materials Technology Institute, St. Louis 2008, ISBN 978-1-57698-046-0

Peer-reviewed articles
E. Berghof-Hasselbächer, P. J. Masset, L. Zhang, L. Liu, Z. Jin, G. Schmidt, M. Galetz, M. Schütze
Microstructures of Erbium modified Aluminium-Copper Alloys
Pract. Metallogr. 49 (2012), 7, 396-411

E. Berghof-Hasselbächer, P. Gawenda, P. J. Masset, G. Schmidt, M. Schütze, S. Diliberto
The Metallographic Investigation of TiAl – Technical Alloy Microstructures
Pract. Metallogr. 47 (2010), 2, 65-83

E. Berghof-Hasselbächer, M. Schütze, M. Schorr, P. Gawenda, John J. Hoffman
The Development of a Microstructural Atlas of the Latest Heat Resistant Centrifugal Casting Alloys
Pract. Metallogr. 45 (2008), 9, 441-455

E. Berghof-Hasselbächer, V. Rohr, E. Nicolas, M. Schütze
The Determination of Al-diffusion Layer Thickness by Image Processing
Pract. Metallogr. 43 (2006), 3, 127-142

E. Berghof-Hasselbächer, C. Rosado Sainz-Rozas, M. Schütze
Protective Coatings to Prevent Metal Dusting
Pract. Metallogr. 40 (2003), 8, 407-419

E. Berghof-Hasselbächer, H. Echsler, P. Gawenda, M. Schütze
Time and Temperature Dependent Development of Physical Defects in Thermal Barrier Coating Systems
Pract. Metallogr. 40 (2003), 5, 219-231

E. Berghof-Hasselbächer, H.-E. Bühler, O. Grewen, M. Schorr, J. Schürrhoff, M. Schütze
Investigations on component failure of grate systems during residual wood combustion
Pract. Metallogr. 39 (2002), 7, 369-386

F. Dettenwanger, D. Grotmann, H. Friedrich, E. Berghof-Hasselbächer, M. Schorr, M. Schütze
Schaden an einer Wärmebehandlungsretorte durch Metal Dusting Angriff
Materials and Corrosion 50, (1999), 289-293

U. J. Brand, H.-E. Bühler, P. Karduck, S. Köhler, E. Berghof-Hasselbächer, M. Schütze
Damage caused by Oxidation and Carburisation at a Valve of Dehydrate unit
Pract. Metallogr. 36 (1999), 8, 406-422

Awards and Honors

  • 2011 Materialography-Price (German Materials Society (DGM))
    45. Metallography Conference 2011, Karlsruhe
  • 2011 Best Paper Award (Buehler GmbH), 45. Metallography Conference (DGM), Karlsruhe
    2nd place for the second-best article of the Journal Practical Metallography in 2010
  • 2009 Best Paper Award (Buehler GmbH), 43. Metallography Conference (DGM), Aachen
    1st place for the best article of the Journal Practical Metallography in 2008
  • 2005 Best Poster Award (Struers GmbH), 39. Metallography Conference (DGM), Erlangen
    1st place for the best Poster of the Conference Poster Session
  • 1993 Photo competition, 28. Metallography Conference (DGM), Aachen
    1st place in the category illustrative and teaching material

Memberships

  • DGM