TY - JOUR
T1 - Three alternative experimental methods to determine the antiphase-boundary energies of the ?? precipitates in superalloys
AU - Baither, D
AU - Rentenberger, Christian
AU - Karnthaler, Hans-Peter
AU - Nembach, E
N1 - Zeitschrift: Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
DOI: 10.1080/01418610210131407
Coden: PMAAD
Affiliations: Institut für Materialphysik, Universität Münster, Wilhelm-Klemm-Strasse 10, D-48149 Münster, Germany; Institut für Materialphysik, Universität Wien, Boltzmanngasse 5, AT-1090 Wien, Austria
Adressen: Nembach, E.; Institut für Materialphysik; Universität Münster; Wilhelm-Klemm-Strasse 10 D-48149 Münster, Germany; email: [email protected]
Import aus Scopus: 2-s2.0-0036258288
04.12.2007: Datenanforderung 2001 (Import Sachbearbeiter)
PY - 2002
Y1 - 2002
N2 - The {111} antiphase-boundary (APB) energies ? of the L12 long-range-ordered ?? phases that precipitation strengthen the commercial nickel-based superalloys Nimonic PE16 and Nimonic 105 were measured by three independent methods. ? was derived, firstly, from the dependence of the critical resolved shear stress on the dispersion of the ?? precipitates in these superalloys, secondly, from the minimum size of Orowan dislocation loops which can be sustained by ?? precipitates and, thirdly, from the separations of the superpartial dislocations bounding APB faults in the single-phase ?? alloys. The latter method is based on state-of-the-art transmission electron microscopy investigations and is considered as the most direct. The results determined by the three different methods show (with one exception) satisfactory agreement. This proves the validity of all three experimental approaches and thus supports the theoretical models on which the first two methods are based. Since ? governs the strength of superalloys, this parameter is of utmost importance.
AB - The {111} antiphase-boundary (APB) energies ? of the L12 long-range-ordered ?? phases that precipitation strengthen the commercial nickel-based superalloys Nimonic PE16 and Nimonic 105 were measured by three independent methods. ? was derived, firstly, from the dependence of the critical resolved shear stress on the dispersion of the ?? precipitates in these superalloys, secondly, from the minimum size of Orowan dislocation loops which can be sustained by ?? precipitates and, thirdly, from the separations of the superpartial dislocations bounding APB faults in the single-phase ?? alloys. The latter method is based on state-of-the-art transmission electron microscopy investigations and is considered as the most direct. The results determined by the three different methods show (with one exception) satisfactory agreement. This proves the validity of all three experimental approaches and thus supports the theoretical models on which the first two methods are based. Since ? governs the strength of superalloys, this parameter is of utmost importance.
U2 - 10.1080/01418610210131407
DO - 10.1080/01418610210131407
M3 - Article
SN - 1364-2804
VL - 82
SP - 1795
EP - 1805
JO - Philosophical Magazine A : Physics of Condensed Matter, Structure, Defects and Mechanical Properties
JF - Philosophical Magazine A : Physics of Condensed Matter, Structure, Defects and Mechanical Properties
IS - 9
ER -