Czasopismo | INŻYNIERIA MATERIAŁOWA | Rocznik 2013 - zeszyt 3

Effect of deformation temperature on the microstructure of hard magnetic FeCr30Co8 alloy subjected to tension combined with torsion

Anna Korneva

nr katalogowy: 78028

The development of new generation of high-speed electrical devices requires high strength characteristics of magnetic materials used. Most magnetic materials of today reveal high magnetic characteristics but are brittle and have low ultimate rupture strength. The highest level of mechanical properties is realized in magnetically hard alloys of Fe-Cr-Co system. Fe-Cr-Co based alloys belong to the deformable magnetic materials of the precipitation-hardening class. Due to their good ductility, excellent magnetic properties and low cost, they are used for the production of permanent magnets of various sizes and shapes, such as wire, tube, bar, strip magnets, etc [1ˇŇ3]. A high-coercive state is obtained by a magnetic treatment and multistage tempering. This leads to the decomposition of the solid solution into the isomorphous Ł\1 and Ł\2 phases, containing ordered and coherent precipitates [4, 5]. The formation of such structures, in which each precipitate of the Ł\1 phase is a single magnetic domain, provides superior magnetic properties. However, internal stress fields, which originate from the formation of coherent boundaries between the precipitates of the Ł\1 and Ł\2 phases, cause a reduction in ductility and strength. It is known, that the structure of material and its mechanical properties can be changed using severe deformation techniques [6, 7]. Complex loading by compression, strength and torsion at an elevated temperature is rather a new method of severe plastic deformation [8]. It ensures a substantially refined microstructure without changing the shape of the specimen. Depending on the mode of the deformation chosen, this method allows localizing strain in specific regions and ensures the formation of gradient microstructure with different combination of magnetic and mechanical properties [9, 10]. The aim of the present work is to present the results of the microstructure and hardness investigations of the FeCr30Co8 a[...]

Jeśli masz wykupiony/przyznany dostęp - zaloguj się. Skorzystaj z naszych propozycji zakupu!

Publikacja


e-Publikacja (format pdf) - nr 78028 "Effect of deformation tem..." licencja: Osobista Produkt cyfrowy	10.00 zł

Zeszyt


INŻYNIERIA MATERIAŁOWA - e-zeszyt (pdf) 2013-3 licencja: Osobista Produkt cyfrowy	65.00 zł

Prenumerata

INŻYNIERIA MATERIAŁOWA - prenumerata cyfrowa
licencja: Osobista

Produkt cyfrowy
Nowość

402.00 zł

INŻYNIERIA MATERIAŁOWA - papierowa prenumerata roczna + wysyłka
licencja: Osobista

Szczegóły pakietu

Nazwa
INŻYNIERIA MATERIAŁOWA - papierowa prenumerata roczna	492.00 zł brutto 455.56 zł netto 36.44 zł VAT (stawka VAT 8%)
INŻYNIERIA MATERIAŁOWA - pakowanie i wysyłka	21.00 zł brutto 17.07 zł netto 3.93 zł VAT (stawka VAT 23%)

513.00 zł

INŻYNIERIA MATERIAŁOWA - PAKIET prenumerata PLUS
licencja: Osobista

Szczegóły pakietu

Nazwa
INŻYNIERIA MATERIAŁOWA - PAKIET prenumerata PLUS (Prenumerata papierowa + dostęp do portalu sigma-not.pl + e-prenumerata)	600.00 zł brutto 555.56 zł netto 44.44 zł VAT (stawka VAT 8%)

600.00 zł

Zeszyt

2013-3

Twój Koszyk

Publikacja

Zeszyt

Prenumerata

Zeszyt

Czasopisma