Effect of thermomechanical treatment and microstructure on pseudo-elastic behavior of Fe–Mn–Si–Cr–Ni-(V, C) shape memory alloy

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Maryam Mohri
  • Irene Ferretto
  • Christian Leinenbach
  • Dohyung Kim
  • Dimitrios G. Lignos
  • Elyas Ghafoori

Externe Organisationen

  • Laboratory for Air Pollution & Environmental Technology, Empa Dübendorf
  • Eidgenössische Technische Hochschule Lausanne (ETHL)
  • Korea Institute of Industrial Technology (KITECH)
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Details

OriginalspracheEnglisch
Aufsatznummer143917
FachzeitschriftMaterials Science and Engineering: A
Jahrgang855
Frühes Online-Datum5 Sept. 2022
PublikationsstatusVeröffentlicht - 10 Okt. 2022
Extern publiziertJa

Abstract

This study systematically investigated the effects of heat and thermomechanical treatments on the pseudo-elastic behavior of an Fe-based shape-memory alloy (Fe–17Mn–5Si–10Cr–4Ni-1(V, C) %wt.). First, samples were solution-annealed at 1000 °C for 2 h and aged at 760 °C for 6 h. A thermomechanical treatment was then applied to the heat-treated samples. The microstructure and mechanical properties (i.e., 0.1% yield stress and pseudo-elasticity) were characterized using X-ray diffraction, scanning and transmission electron microscopy, and uniaxial tensile tests. The results showed that decreasing the grain size and precipitation of VCs resulted in an improved pseudo-elasticity. The thermomechanical treatment decreased the number of thermal twins and developed a [111] texture in the austenite phase, which reduced the critical stress for inducing martensite. The presence of VC precipitates and texture formation in the thermomechanical-treated samples increased the pseudo-elastic strain more than twofold from 0.4 to 0.98%.

ASJC Scopus Sachgebiete

Zitieren

Effect of thermomechanical treatment and microstructure on pseudo-elastic behavior of Fe–Mn–Si–Cr–Ni-(V, C) shape memory alloy. / Mohri, Maryam; Ferretto, Irene; Leinenbach, Christian et al.
in: Materials Science and Engineering: A, Jahrgang 855, 143917, 10.10.2022.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Mohri M, Ferretto I, Leinenbach C, Kim D, Lignos DG, Ghafoori E. Effect of thermomechanical treatment and microstructure on pseudo-elastic behavior of Fe–Mn–Si–Cr–Ni-(V, C) shape memory alloy. Materials Science and Engineering: A. 2022 Okt 10;855:143917. Epub 2022 Sep 5. doi: 10.1016/j.msea.2022.143917
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title = "Effect of thermomechanical treatment and microstructure on pseudo-elastic behavior of Fe–Mn–Si–Cr–Ni-(V, C) shape memory alloy",
abstract = "This study systematically investigated the effects of heat and thermomechanical treatments on the pseudo-elastic behavior of an Fe-based shape-memory alloy (Fe–17Mn–5Si–10Cr–4Ni-1(V, C) %wt.). First, samples were solution-annealed at 1000 °C for 2 h and aged at 760 °C for 6 h. A thermomechanical treatment was then applied to the heat-treated samples. The microstructure and mechanical properties (i.e., 0.1% yield stress and pseudo-elasticity) were characterized using X-ray diffraction, scanning and transmission electron microscopy, and uniaxial tensile tests. The results showed that decreasing the grain size and precipitation of VCs resulted in an improved pseudo-elasticity. The thermomechanical treatment decreased the number of thermal twins and developed a [111] texture in the austenite phase, which reduced the critical stress for inducing martensite. The presence of VC precipitates and texture formation in the thermomechanical-treated samples increased the pseudo-elastic strain more than twofold from 0.4 to 0.98%.",
keywords = "Iron-based shape memory alloy (Fe-SMA), Superelasticity, Thermomechanical treatment",
author = "Maryam Mohri and Irene Ferretto and Christian Leinenbach and Dohyung Kim and Lignos, {Dimitrios G.} and Elyas Ghafoori",
note = "Funding information: This study was funded by the EMPAPOSTDOCS-II program , which received funding from the European Union Horizon 2020 research and innovation program under the Marie Sk?odowska-Curie grant agreement number 754364 . The contribution of re-fer AG in providing the test materials is also acknowledged. Any opinion and findings in this paper are those of the authors and do not necessarily reflect the view of the sponsors.",
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TY - JOUR

T1 - Effect of thermomechanical treatment and microstructure on pseudo-elastic behavior of Fe–Mn–Si–Cr–Ni-(V, C) shape memory alloy

AU - Mohri, Maryam

AU - Ferretto, Irene

AU - Leinenbach, Christian

AU - Kim, Dohyung

AU - Lignos, Dimitrios G.

AU - Ghafoori, Elyas

N1 - Funding information: This study was funded by the EMPAPOSTDOCS-II program , which received funding from the European Union Horizon 2020 research and innovation program under the Marie Sk?odowska-Curie grant agreement number 754364 . The contribution of re-fer AG in providing the test materials is also acknowledged. Any opinion and findings in this paper are those of the authors and do not necessarily reflect the view of the sponsors.

PY - 2022/10/10

Y1 - 2022/10/10

N2 - This study systematically investigated the effects of heat and thermomechanical treatments on the pseudo-elastic behavior of an Fe-based shape-memory alloy (Fe–17Mn–5Si–10Cr–4Ni-1(V, C) %wt.). First, samples were solution-annealed at 1000 °C for 2 h and aged at 760 °C for 6 h. A thermomechanical treatment was then applied to the heat-treated samples. The microstructure and mechanical properties (i.e., 0.1% yield stress and pseudo-elasticity) were characterized using X-ray diffraction, scanning and transmission electron microscopy, and uniaxial tensile tests. The results showed that decreasing the grain size and precipitation of VCs resulted in an improved pseudo-elasticity. The thermomechanical treatment decreased the number of thermal twins and developed a [111] texture in the austenite phase, which reduced the critical stress for inducing martensite. The presence of VC precipitates and texture formation in the thermomechanical-treated samples increased the pseudo-elastic strain more than twofold from 0.4 to 0.98%.

AB - This study systematically investigated the effects of heat and thermomechanical treatments on the pseudo-elastic behavior of an Fe-based shape-memory alloy (Fe–17Mn–5Si–10Cr–4Ni-1(V, C) %wt.). First, samples were solution-annealed at 1000 °C for 2 h and aged at 760 °C for 6 h. A thermomechanical treatment was then applied to the heat-treated samples. The microstructure and mechanical properties (i.e., 0.1% yield stress and pseudo-elasticity) were characterized using X-ray diffraction, scanning and transmission electron microscopy, and uniaxial tensile tests. The results showed that decreasing the grain size and precipitation of VCs resulted in an improved pseudo-elasticity. The thermomechanical treatment decreased the number of thermal twins and developed a [111] texture in the austenite phase, which reduced the critical stress for inducing martensite. The presence of VC precipitates and texture formation in the thermomechanical-treated samples increased the pseudo-elastic strain more than twofold from 0.4 to 0.98%.

KW - Iron-based shape memory alloy (Fe-SMA)

KW - Superelasticity

KW - Thermomechanical treatment

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DO - 10.1016/j.msea.2022.143917

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