1980
DOI: 10.1038/284537a0
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Santa Catharina meteorite and phase composition of irradiated Fe–Ni Invar alloys

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Cited by 43 publications
(25 citation statements)
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“…This phase reveals chemical long-range ordering of L1 2 -type at a temperature less than 516 1C [3]. The L1 0 -ordered equiatomic fcc NiFe phase (tetratienite) with a ¼ 0:3582 nm was found in meteorite samples [4][5][6]. The most remarkable peculiarity of the Fe-rich region of the Fe-Ni system ($65% Fe) is an extremely small and for some compositions even negative value of the thermal expansion coefficient (''invar'' effect).…”
Section: Introductionmentioning
confidence: 95%
See 1 more Smart Citation
“…This phase reveals chemical long-range ordering of L1 2 -type at a temperature less than 516 1C [3]. The L1 0 -ordered equiatomic fcc NiFe phase (tetratienite) with a ¼ 0:3582 nm was found in meteorite samples [4][5][6]. The most remarkable peculiarity of the Fe-rich region of the Fe-Ni system ($65% Fe) is an extremely small and for some compositions even negative value of the thermal expansion coefficient (''invar'' effect).…”
Section: Introductionmentioning
confidence: 95%
“…The transition into equilibrium state goes by phase decomposition into g-and a-phases in the case of lowtemperature annealing [7,18,19], or paramagnetic g par and ferromagnetic NiFe phases, as it was found in meteorites [4][5][6], electronic beam irradiated samples [7,20,21] and samples prepared using mechanical alloying [22][23][24][25][26][27]. The paramagnetic g par and ferromagnetic NiFe phases are indistinguishable by diffraction methods; therefore, their cell parameters are accepted to be the same.…”
Section: Introductionmentioning
confidence: 99%
“…Також відомо, що впорядковані й невпорядковані фази Fe-Ni з інварними (й неінварними) концентраціями було виявлено в ме-теоритних стопах (див., наприклад, [166,[349][350][351][352][353][354][355][356][357][358]). Такі метео-ритні Fe-Ni-стопи з інварними концентраціями розпадаються на (не)впорядковану ГЦК-фазу Fe 3 Ni та впорядковану фазу типу L1 0 -FeNi [359].…”
Section: обговорення експериментальних результатівunclassified
“…[7][8][9] In the case of the metal particles of chondrites it was possible through the Mössbauer hyperfine parameters to learn about the different thermic and shock history of the 3 different types of chondrites: LL (low low Fe), L (low Fe) and H (high Fe). The behaviour of the ordered phase as a function of shock and temperature showed that the high relation Ni/Fe present in the LL chondrites favours the formation of the ordered phase, also common in L chondrites in minor proportion, and in certain cases can also be found in H chondrites.…”
Section: Meteoritic Fe-ni Alloysmentioning
confidence: 99%