Zugversuche bis zum Riß an Proben, die auf Temperaturen von 20 bis 1200° C erwärmt sind. Korngrenzengleiten bei höherer Temperatur. Mikroaufnahmen der Probenoberfläche.

With the help of a special experiment stand for hot drawing experiments on metals with microscopic observations of the test surface at the same time, pure nickel samples were inductively heated to temperatures of 20, 400, 600, 800, 1000 and 1200° C with high frequency, and were pulled apart with controlled stretching until cracks appeared. Among other things the film shows the so-called "grain boundary flow", a kind of structural deformation which appears at high temperatures. The width of field with all shots was 200 µm.