Research output: Contribution to journal › Conference article › peer-review
The investigation of Fe-Mn-based alloys with shape memory effect by small-angle scattering of polarized neutrons. / Kopitsa, G. P.; Runov, V. V.; Grigoriev, S. V.; Bliznuk, V. V.; Gavriljuk, V. G.; Glavatska, N. I.
In: Physica B: Condensed Matter, Vol. 335, No. 1-4, 07.2003, p. 134-139.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - The investigation of Fe-Mn-based alloys with shape memory effect by small-angle scattering of polarized neutrons
AU - Kopitsa, G. P.
AU - Runov, V. V.
AU - Grigoriev, S. V.
AU - Bliznuk, V. V.
AU - Gavriljuk, V. G.
AU - Glavatska, N. I.
PY - 2003/7
Y1 - 2003/7
N2 - The small-angle polarized neutron scattering (SAPNS) technique has been used to study a nuclear and magnetic homogeneity in the distribution of both substituent (Si, Cr, Ni) and interstitial (C, N) alloying elements on the mesoscopic range in Fe-Mn-based alloys with shape memory effect (SME). The four groups of alloys with various basic compositions: FeMn18 (wt%), FeMn20Si6, FeMn20Cr9N0.2 and FeMn17Cr9Ni4Si6 were investigated. It was found that the small-angle scattering of neutrons and depolarization on these alloys are very small altogether. The scattering did not exceed 1.5% from the incident beam and depolarization ∼2% for all samples. It means that these alloys are well nuclear and magnetically homogeneous on the scale of 10-1000Å. However, the difference in the homogeneity depending on the compositions still takes place. Thus, the adding of Si in FeMn18 and FeMn20Cr9N0.2 alloys improves the homogeneity pronouncedly. At once, the effect of the doping by C or N atoms on the homogeneity in FeMn20Si6 and FeMn17Cr9Ni4Si6 alloys is multivalued and depend on the presence of substitutional atoms (Ni and Cr). The capability of SAPNS as a method for the study of mesoscopic homogeneity in materials with SME and testing of the quality of their preparation is discussed.
AB - The small-angle polarized neutron scattering (SAPNS) technique has been used to study a nuclear and magnetic homogeneity in the distribution of both substituent (Si, Cr, Ni) and interstitial (C, N) alloying elements on the mesoscopic range in Fe-Mn-based alloys with shape memory effect (SME). The four groups of alloys with various basic compositions: FeMn18 (wt%), FeMn20Si6, FeMn20Cr9N0.2 and FeMn17Cr9Ni4Si6 were investigated. It was found that the small-angle scattering of neutrons and depolarization on these alloys are very small altogether. The scattering did not exceed 1.5% from the incident beam and depolarization ∼2% for all samples. It means that these alloys are well nuclear and magnetically homogeneous on the scale of 10-1000Å. However, the difference in the homogeneity depending on the compositions still takes place. Thus, the adding of Si in FeMn18 and FeMn20Cr9N0.2 alloys improves the homogeneity pronouncedly. At once, the effect of the doping by C or N atoms on the homogeneity in FeMn20Si6 and FeMn17Cr9Ni4Si6 alloys is multivalued and depend on the presence of substitutional atoms (Ni and Cr). The capability of SAPNS as a method for the study of mesoscopic homogeneity in materials with SME and testing of the quality of their preparation is discussed.
KW - Polarized neutrons
KW - Shape memory effect
KW - Small-angle neutron scattering
UR - http://www.scopus.com/inward/record.url?scp=0038382916&partnerID=8YFLogxK
U2 - 10.1016/S0921-4526(03)00224-2
DO - 10.1016/S0921-4526(03)00224-2
M3 - Conference article
AN - SCOPUS:0038382916
VL - 335
SP - 134
EP - 139
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1-4
T2 - Proceedings of the Fourth International Workshop on PNCMI 2002
Y2 - 16 September 2002 through 19 September 2002
ER -
ID: 86435116