TY  - JOUR
AU  - Grushko, Benjamin
AU  - Kapush, Denys
TI  - A refinement of the Al-Ni-Pt phase diagram
JO  - Journal of alloys and compounds
VL  - 594
SN  - 0925-8388
CY  - Lausanne
PB  - Elsevier
M1  - FZJ-2014-06421
SP  - 127 - 132
PY  - 2014
AB  - Phase equilibria in the Al–Ni–Pt alloy system were specified. The total compositional region of the ternary phase diagram can coarsely be divided into three peculiar subregions. Above ∼70 at.% Al this alloy system is characterized by the formation of complex binary and ternary phases. Between ∼40 and 70 at.% Al the structures based on the CsCl-type configuration dominate, while below ∼40 at.% Al the structures are based on the FCC (Ni, Pt) solid solution. The high-Al subregion was completed with the recently revealed binary high-temperature “Al3Pt” ξ-phase (Bmmb (No. 63), a = 1.9718, b = 1.6228, c = 1.4266 nm), which was found to extend up to 1.6 at.% Ni. In the medium-Al subregion the ternary extension of the Al2Pt phase (β*) separates the compositional regions extending from Al3Ni2 and Al3Pt2. At 900–1100 °C no complete separation was revealed between the compositional fields of the β-phase and β*. With decreasing temperature the total β + β* field shrinks around the compositional lines Al2Pt–Al2NiPt and AlNi–Al2NiPt. In the low-Al subregion the low-Ni limit of the γ♦-phase region, probably extending at low temperatures from Al3Ni5, was found to be below 4 at.%.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000331723100022
DO  - DOI:10.1016/j.jallcom.2014.01.114
UR  - https://juser.fz-juelich.de/record/173007
ER  -