ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
A series of high yielding strength (90–180 ksi) and high-elongation (30%–45%) FeAlMnC steels have been made. The magnetic, microstructural, and thermal expansion properties of these steels have been studied. Basically, their magnetic transitions on cooling can be classified into three groups according to their microstructures: (i) For fully austenitic (γ) steels, the transition is from paramagnetic to antiferromagnetic. TN is lowered with the addition of Al; (ii) for α+γ phase steel (volume fraction of α≤0.3%), the transition is from superparamagnetic to antiferromagnetic, and (iii) for the mixed phase steel, whose α phase has percolated, it is ferromagnetic with TC(approximately-equal-to)200 C. The susceptibility of austenitic steels is low. Their nonmagnetic properties are comparable to commercial 304 or 25/12 stainless steel. An Invar-like property in the thermal expansion was observed around TN. Their volume magnetostriction values are in the range of 10−6–10−5.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.346053
