Studies of invar alloys sintered from powders mixtures

E. V. Abdulmenova, V. I. Kashirina, S. N. Kulkov

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

In this work studies of the alloys sintered by powder metallurgy method are presented. Samples were obtained from mixtures of powders Fe and Ni (30-40 wt % Ni) after ball-mill treatment, cold pressing and sintered in a vacuum furnace. It has been shown that the face centered cubic and body centered cubic (no more than 5%) alloys are formed at sintering of powders mixture. The lattice parameter of the γ-phase depends on content of Ni and increases from 3.585×10-10 to 3.596-10 m, these lattice parameters correspond to well-known invar alloys. The hardness of sintered samples changes from 0.8 to 1.5 GPa, the Young's modulus changes from 83 to 126 GPa that correspond to values obtained for invar alloy in literature. The coefficient of thermal expansion is 1.1×10-6°-1 for interval 0-150° and is 15.8 × 10-6°-1 for interval 300-500° and this change corresponds to magnetic transformation at 225°. So, alloys obtained by sintering of powders Fe and Ni are formed as invar alloy and its properties are typical of cast alloys.

Язык оригиналаАнглийский
Название основной публикацииProceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019
РедакторыVictor E. Panin, Sergey G. Psakhie, Vasily M. Fomin
ИздательAmerican Institute of Physics Inc.
ISBN (электронное издание)9780735419124
DOI
СостояниеОпубликовано - 19 ноя 2019
СобытиеInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 - Tomsk, Российская Федерация
Продолжительность: 1 окт 20195 окт 2019

Серия публикаций

НазваниеAIP Conference Proceedings
Том2167
ISSN (печатное издание)0094-243X
ISSN (электронное издание)1551-7616

Конференция

КонференцияInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019
СтранаРоссийская Федерация
ГородTomsk
Период1.10.195.10.19

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Abdulmenova, E. V., Kashirina, V. I., & Kulkov, S. N. (2019). Studies of invar alloys sintered from powders mixtures. В V. E. Panin, S. G. Psakhie, & V. M. Fomin (Ред.), Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 [020002] (AIP Conference Proceedings; Том 2167). American Institute of Physics Inc.. https://doi.org/10.1063/1.5131869