Some Considerations on the Occurrence of Intergranular Fracture during Fatigue Crack growth in Steels

The occurrence of a maximum in the percentage of intergranular fracture on the fracture surface during the transition from intermediate to low fatigue crack growth rates has been observed for a high strength steel. It is suggested that transgranular planar slip leading to slip localization is essential in promoting intergranular fracture when the cyclic plastic zone size becomes equal to the prior austenite grain size.

Elizabeth Gottschalk with unidentified classmates on a field trip from Sophienschule; Hannover, Germany. Institutions; Educational; Schools; Portraits; Groups

Elizabeth Gottschalk is probably the student far left on the horse wagon

Cover of the book "Reise durch die Provence 1928" that celebrates the trip through Provence taken by Ellen Catzenstein, Mara Matthiesen and Gerda Rotermund.

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Liederkranz trip to Hundseck Portraits Groups

Liederkranzausflug nach Hundseck; Standing l-r; Sidi Ullmann, Ehepaar, Alfred und Toni Hirschland, Willi Ullmann, Lisel Suess, Lene Hesse-Sinzheimer, Julius Suess, ?, Hermann Boehm, Eugen Hirsch, Dr. Carl Kahn, Frau von Michael Rothschild (Ella?), Max Sinzheimer, Grete Hirschland and Alfred Liebmann ; Seated l-r: Adele Boehm, Michael Rothschild, rosel Suess, Louis Kahn (Junior), Ehepaar Dr. Gustav Hecht, Paula Hirsch and Marianne Kahn

Fritz Gottschalk and Therese Gottschalk nee Molling on a ski trip; Berchtesgaden, Germany.

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Desiderius Herlinger, Annie Unger, Fritz Unger and Leopold Giustina (chauffeur) on driving trip to England.

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Reiss family on skiing trip; Arosa Portraits Family

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Class portrait to remember the trip to Kablau(?).

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Elizabeth Gottschalk with unidentified classmates on a field trip from Sophienschule; Hannover, Germany. Institutions; Educational; Schools; Portraits; Groups

Elizabeth Gottschalk is probably the student far left on the horse wagon

Cover of the book "Reise durch die Provence 1928" that celebrates the trip through Provence taken by Ellen Catzenstein, Mara Matthiesen and Gerda Rotermund.

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Fritz Gottschalk and Therese Gottschalk nee Molling on a ski trip; Berchtesgaden, Germany.

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Reiss family on skiing trip; Arosa Portraits Family

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Class portrait to remember the trip to Kablau(?).

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Easter Trip to Geneva, Switzerland Album

"Osterreise nach Genf 7.4.-15.4 1925."