The nucleation and initial stages of growth of grain boundary precipitates in Al-Zn-Mg and Al-Mg alloys

PNT Unwin, RB Nicholson - Acta metallurgica, 1969 - Elsevier
The early stages of grain boundary precipitation in two aluminium alloys, Al-6% Zu-3% Mg
and Al-7% Mg, have been examined by transmission electron microscopy, and are …

Grain boundary precipitation in aluminum alloys: effect of boundary structure

R Gronsky, P Furrer - Metallurgical Transactions A, 1981 - Springer
A transmission electron microscope study of grain boundary precipitation in Al-Zn and Al-Zn-
Mg alloys has been conducted with emphasis on the influence of localized boundary …

In situ observations of the nucleation and initial growth of grain boundary precipitates in an Al-Zn-Mg alloy

EP Butler, PR Swann - Acta Metallurgica, 1976 - Elsevier
In situ observations of grain boundary precipitate nucleation and the early stages of growth
in an Al-7.8% Zn-2.5% Mg alloy have been made by examination in a high voltage electron …

The nucleation of precipitates: the system Al-Zn-Mg

JD Embury, RB Nicholson - Acta Metallurgica, 1965 - Elsevier
The morphology and distribution of precipitates in an Al-Zn-Mg alloy have been studied by
transmission electron microscopy with particular attention being paid to the effect of lattice …

Grain boundary precipitation in an Al Cu alloy

D Vaughan - Acta Metallurgica, 1968 - Elsevier
Grain boundary precipitation in an Al-4% Cu alloy has been studied by transmission
electron microscopy. Electron diffraction was used to determine the crystallographic details …

The non‐equilibrium state of grain boundaries and the grain boundary precipitations in aluminium alloys

RZ Valiev, RS Musalimov, NK Tsenev - Physica status solidi (a), 1989 - Wiley Online Library
Grain boundary precipitations of the B93 alloy (Al+ 7% Zn+ 1.9% Mg+ 1% Cu+ 0.3% Fe) are
studied in the as‐annealed state and after 2% pre‐straining at room temperature, the alloy …

The origin of the grain boundary precipitate free zone

PNT Unwin, GW Lorimer, RB Nicholson - Acta Metallurgica, 1969 - Elsevier
The origin of the grain boundary precipitate free zone is discussed in relation to Al-Zn-Mg
and Al-Cu alloys using the occurrence of homogeneously distributed precipitate as a semi …

Modelling of grain boundary segregation, precipitation and precipitate-free zones of high strength aluminium alloys—I. The model

H Jiang, RG Faulkner - Acta materialia, 1996 - Elsevier
The earlier combined model [Faulkner and Jiang, Mater. Sci. Technol. 9, 665 (1993)] is
improved by means of modifying the kinetics of segregation and taking into account the …

A study of grain boundary precipitate-free zone formation in an Al− Zn− Mg alloy

CR Shastry, G Judd - Metallurgical and Materials Transactions B, 1971 - Springer
The effect of quench rate and boundary type on the width of precipitate-free zones in an Al-
6.86 wt pct Zn-2.35 wt pct Mg alloy that was aged at two different temperatures was studied …

[引用][C] The causes and effects of “denuded” or “precipitate-free” zones at grain boundaries in aluminum-base alloys

EA Starke Jr - JOM, 1970 - Springer
Since Geisler first suggested'that the intercrystalline weakness of certain age-hardenable
alloys was caused by formation of weak denuded zones associated with grain-boundary …