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The influence of heat treatment atmosphere and maintaining period on the homogeneity degree of a Fe-Mn-Si-Cr-Ni shape memory alloy obtained through powder metallurgy

Domenii publicaţii > Stiinte ingineresti + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: I. P. Spiridon, B. Pricop, Marius-Gabriel SURU, A. L. Paraschiv, N. M. Lohan, L.-G. Bujoreanu

Editorial: Journal of Optoelectronics and Advanced Materials, Vol. 15, No. 7-8, p.730 – 733, 2013.


An Fe-14Mn-6Si-9Cr-5Ni (mass. %) shape memory alloy obtained through powder metallurgy, containing a mixture of 50%
commercial powders and 50% mechanical alloyed powders, was subjected to different heat treatments in order to increase
chemical homogeneity degree. The heat treatments consisted of using three types of treatment atmospheres (air, nitrogen
and argon) and three isothermal maintaining times (6 × 102 s, 24 × 102 s and 48 × 102 s). The obtained microstructures
were then analysed by optical and scanning electron microscopy.

Cuvinte cheie: Fe-Mn-Si shape memory alloys, Mechanical alloying, Powder metallurgy, Treatment atmosphere