Zur Analyse von hochreinem Eisen

Blümel, Gerd; Engelmann, Ch.; Reimers, P.

doi:10.1002/pssa.2210100152

Cited by 9 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One portion of the wires was heated again in palladium purified hydrogen. Table 2 shows typical results of an activation analysis [4] (at PPm) T a b l e 2 Content of interstitial impurities (at ppm) in zone-melted iron before and after annealing in Pd-purified H, ( The length of the wires was 5 cm. Only the middle part with a length of 12 to 13 nim was used for resistivity measurements.…”

Section: Methodsmentioning

confidence: 99%

Quenching experiments with high-purity iron

Wever

Seith

1975

Phys. Stat. Sol. (a)

View full text Add to dashboard Cite

In continuation of experiments by Glaeser and Wever wires of high purity Fe were quenched from temperatures up to 1430 °C with various quenching rates. The result was that with a carbon content of about 1 at. ppm the two recovery stages between 60 and 150 °C and between 180 and 300 °C which were observed earlier, do not exist. With a carbon content of about 10 at. ppm, however, the two stages are still observed even with quenching rates down to 10 K/s. This proves that these stages cannot be caused by the migration of vacancies. In slight variation of the interpretation of similar stages observed by Fujita and Damask in Fe with about 500 ppm C it is suggested that in the first stage carbon probably migrates as di‐interstitial to precipitations of ε‐carbide. These precipitations are dissolved again with rising temperatures beginning at 150 °C. The second stage is caused by competitive precipitation of Fe3C which dissolves also with rising temperatures between 300 and 500 °C. For quenching temperatures of 1100 and 1430 °C the height of the first stage increases with quenching rate. It is suggested that this is caused by dissolved oxygen which precipitated together with carbon within the temperature range of the first stage. For higher quenching rates dislocations are formed while crossing the α–γ‐transformation. These dislocations recover again between 800 and 400 °C. According to the results it is stated that the enthalpy of formation of vacancies is >1.65 eV and the enthalpy of migration is <1.0 eV.

show abstract

Section: Methodsmentioning

confidence: 99%

Quenching experiments with high-purity iron

Wever

Seith

1975

Phys. Stat. Sol. (a)

View full text Add to dashboard Cite

show abstract

Recken von hochreinem Eisen zwischen 23 °C und —196 °C

Blümel

1973

Steel Research Intl

View full text Add to dashboard Cite

Hochreinigung eines chemisch vorgereinigten Eisenpulvers durch Sintern, Elektronenstrahlzonenschmelzen und Glühen unter trockenem Wasserstoff. Proportionalitätsgrenze, Reckalterung und Restwiderstandsverhältnis als Kenngrößen für die Reinheit. Vergleich zu Ergebnissen der Aktivierungsanalyse. Temperaturabhängigkeit der Fließgrenze zwischen +23 und ‐125 °C und Vergleich mit Schrifttumsangaben. Rasterelektronenmikroskopische Bruchuntersuchungen nach Zerreißen zwischen Raumtemperatur und ‐196 °C. Zwillingsbildung, Sprödbruchverhalten und Einfluß einer Vorverformung auf die plastische Dehnbarkeit bei ‐196 °C.

show abstract

Einfluß von Verformungsart und ‐temperatur auf die Substruktur hochreinen Eisens

Blümel

1973

Steel Research Intl

View full text Add to dashboard Cite

show abstract

Zur Analyse von hochreinem Eisen

Cited by 9 publications

References 5 publications

Quenching experiments with high-purity iron

Quenching experiments with high-purity iron

Recken von hochreinem Eisen zwischen 23 °C und —196 °C

Einfluß von Verformungsart und ‐temperatur auf die Substruktur hochreinen Eisens

Contact Info

Product

Resources

About