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Voreutektoidische Ferritausscheidung in Widmanstätten-Struktur bei Chrom-Stahl


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Formal Metadata

Title Voreutektoidische Ferritausscheidung in Widmanstätten-Struktur bei Chrom-Stahl
Alternative Title Ferrite Precipitation in Chromium Steel with Widmanstätten Structure
Author Rose, Adolf
Hougardy, Hans Paul
License No Open Access License:
German copyright law applies. This film may be used for your own use but it may not be distributed via the internet or passed on to external parties.
DOI 10.3203/IWF/E-1150
IWF Signature E 1150
Publisher IWF (Göttingen)
Release Date 1967
Language Silent film
Producer IWF
Production Year 1966

Technical Metadata

IWF Technical Data Film, 16 mm, 49 m ; SW, 4 1/2 min

Content Metadata

Subject Area Physics
Abstract Abkühlung eines austenitisierten Chromstahls mit 0,2%C führt zur Ausscheidung voreutektoiden Ferrits, der sich in grobkörniger Austenitstruktur bzw. bei beschleunigter Abkühlung von zu hohen Temperaturen in Form von Nadeln und Platten bildet.
The film shows the separation of pro-eutectoid ferrite from the austenite in Widmanstätten arrangement in the form of the development of a needle profile on a polished surface in the hot stage microscope on a chrome steel with 0.20%C. The boundaries of the austenite grains are also visible. The film shots show the cooling in the sample after an austenitisation at 1200 °C, beginning at about 750 °C and endig at 570 °C in a time of about 50s. The first ferrite needles may be recognized at about 720 °C. The needles are to be seen growing, in general starting from the austenite grain boundary, in certain preferred directions often parallel to each other. The needles grow both lengthways and sideways as intersection tracks of plates. The end of the ferrite formation is reached in this case at about 600 °C.
Keywords Widmanstättensche Figuren
Stahl / Kristallverformung
Kristallverformung / Stahl
Chromstahl / Ferritausscheidung
Stahl / rostfreier Stahl
Stahl / Chromstahl
austenite transformation
ferrite precipitation
steel / stainless steel
steel / chromium steel
chromium steel / ferrite precipitation
crystal deformation / steel
steel / crystal deformation
Widmanstätten patterns
Widmanstätten structures

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