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Special block from the conference RoPM2017 guest edited by Ionel Chicinas, Technical University, Cluj-Napoca

Synthesis of Invar 36 type alloys from elemental and prealloyed powders by mechanical alloying

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Pages 155-161 | Received 21 Nov 2017, Accepted 25 May 2019, Published online: 06 Jun 2019
 

ABSTRACT

Invar 36 (Fe64Ni36) nanocrystalline powders were successfully obtained by the mechanical alloying process. The mechanically alloyed Invar 36 powders were obtained from both, Fe–Ni elemental and Fe–Ni3Fe prealloyed powders. XRD, DSC and magnetic measurements were used to characterise the Invar 36 powders. The lattice parameter evolution versus temperature of Invar 36 powders was investigated by in-situ high-temperature X-ray diffraction (HT-XRD). For both, Invar 36 (Fe, Ni) and Invar 36 (Fe, Ni3Fe) powders, the lattice parameter values are constant up to about 350°C. The magnetic measurement also indicated that the Invar 36-type alloys are formed after 16 h of milling.

Disclosure statement

No potential conflict of interest was reported by the authors.

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