Fluctuations of chemical composition of austenite and their consequence on shape memory effect in Fe-Mn-(Si, Cr, Ni, C, N) alloys

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Fluctuations of chemical composition of austenite and their consequence on shape memory effect in Fe-Mn-(Si, Cr, Ni, C, N) alloys. / Bliznuk, V. V.; Gavriljuk, V. G.; Kopitsa, G. P.; Grigoriev, S. V.; Runov, V. V.

In: Acta Materialia, Vol. 52, No. 16, 20.09.2004, p. 4791-4799.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{6dfb85ac5f45494db29da882e6701e0f,

title = "Fluctuations of chemical composition of austenite and their consequence on shape memory effect in Fe-Mn-(Si, Cr, Ni, C, N) alloys",

abstract = "Polycrystalline samples of shape memory iron-based alloys containing 17, and 30 mass% Mn and alloyed with Si, Cr, Ni, C, N were studied by means of small angle scattering of polarized neutrons (SAPNS). A direct correlation between chemical homogeneity of the Fe-Mn, Fe-Mn-Si, Fe-Mn-Si-Cr, Fe-Mn-Si-Cr-Ni solid solutions and the values of reversible strain caused by the γ → ε → γ martensitic transformation was found. The addition of silicon to the Fe-Mn alloys significantly improves chemical homogeneity of the fee solid solution on the scale of larger than several nm, which correlates with the essential increase of reversible strain. A similar to silicon but weaker effect was observed in the case of nitrogen addition to the Fe-Mn-Si-Cr, Fe-Mn-Si-Cr-Ni alloys. Based on the obtained experimental data and in consistency with the previously expressed idea by Sade et al., the positive effect of silicon and nitrogen on chemical homogeneity and SME in Fe-Mn alloys is attributed to the short-range atomic ordering induced by these elements.",

keywords = "Chemical homogeneity, Fe-Mn-Si alloys, Shape memory, Small angle polarised neutron scattering",

author = "Bliznuk, {V. V.} and Gavriljuk, {V. G.} and Kopitsa, {G. P.} and Grigoriev, {S. V.} and Runov, {V. V.}",

note = "Funding Information: This work has been carried out within the framework of Project INTAS No: 97-30921, Russian Fund for Fundamental Research (Projects: L-00-15-96814 and 01-02-17286) and Russian Federal Program “Neutron Investigation of Matter”.",

year = "2004",

month = sep,

day = "20",

doi = "10.1016/j.actamat.2004.06.036",

language = "English",

volume = "52",

pages = "4791--4799",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier",

number = "16",

}

RIS

TY - JOUR

T1 - Fluctuations of chemical composition of austenite and their consequence on shape memory effect in Fe-Mn-(Si, Cr, Ni, C, N) alloys

AU - Bliznuk, V. V.

AU - Gavriljuk, V. G.

AU - Kopitsa, G. P.

AU - Grigoriev, S. V.

AU - Runov, V. V.

N1 - Funding Information: This work has been carried out within the framework of Project INTAS No: 97-30921, Russian Fund for Fundamental Research (Projects: L-00-15-96814 and 01-02-17286) and Russian Federal Program “Neutron Investigation of Matter”.

PY - 2004/9/20

Y1 - 2004/9/20

N2 - Polycrystalline samples of shape memory iron-based alloys containing 17, and 30 mass% Mn and alloyed with Si, Cr, Ni, C, N were studied by means of small angle scattering of polarized neutrons (SAPNS). A direct correlation between chemical homogeneity of the Fe-Mn, Fe-Mn-Si, Fe-Mn-Si-Cr, Fe-Mn-Si-Cr-Ni solid solutions and the values of reversible strain caused by the γ → ε → γ martensitic transformation was found. The addition of silicon to the Fe-Mn alloys significantly improves chemical homogeneity of the fee solid solution on the scale of larger than several nm, which correlates with the essential increase of reversible strain. A similar to silicon but weaker effect was observed in the case of nitrogen addition to the Fe-Mn-Si-Cr, Fe-Mn-Si-Cr-Ni alloys. Based on the obtained experimental data and in consistency with the previously expressed idea by Sade et al., the positive effect of silicon and nitrogen on chemical homogeneity and SME in Fe-Mn alloys is attributed to the short-range atomic ordering induced by these elements.

AB - Polycrystalline samples of shape memory iron-based alloys containing 17, and 30 mass% Mn and alloyed with Si, Cr, Ni, C, N were studied by means of small angle scattering of polarized neutrons (SAPNS). A direct correlation between chemical homogeneity of the Fe-Mn, Fe-Mn-Si, Fe-Mn-Si-Cr, Fe-Mn-Si-Cr-Ni solid solutions and the values of reversible strain caused by the γ → ε → γ martensitic transformation was found. The addition of silicon to the Fe-Mn alloys significantly improves chemical homogeneity of the fee solid solution on the scale of larger than several nm, which correlates with the essential increase of reversible strain. A similar to silicon but weaker effect was observed in the case of nitrogen addition to the Fe-Mn-Si-Cr, Fe-Mn-Si-Cr-Ni alloys. Based on the obtained experimental data and in consistency with the previously expressed idea by Sade et al., the positive effect of silicon and nitrogen on chemical homogeneity and SME in Fe-Mn alloys is attributed to the short-range atomic ordering induced by these elements.

KW - Chemical homogeneity

KW - Fe-Mn-Si alloys

KW - Shape memory

KW - Small angle polarised neutron scattering

UR - http://www.scopus.com/inward/record.url?scp=4344596242&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2004.06.036

DO - 10.1016/j.actamat.2004.06.036

M3 - Article

AN - SCOPUS:4344596242

VL - 52

SP - 4791

EP - 4799

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

IS - 16

ER -

ID: 86432971