On the low-cycle fatigue behavior of a multi-phase high entropy alloy with enhanced plasticity

Name: On the low-cycle fatigue behavior of a multi-phase high entropy alloy with enhanced plasticity
Author: Radi, Amin, Sajadifar, S., Seyedmohammadi, Seyedveghar, Krochmal, M., Bolender, A., Wegener, T., Niendorf, T., Yapıcı, Güney Güven

İsim	On the low-cycle fatigue behavior of a multi-phase high entropy alloy with enhanced plasticity
Yazar	Radi, Amin, Sajadifar, S., Seyedmohammadi, Seyedveghar, Krochmal, M., Bolender, A., Wegener, T., Niendorf, T., Yapıcı, Güney Güven
Basım Tarihi:	2023-08
Basım Yeri	- Elsevier
Konu	High entropy alloy (HEA), Low-cycle fatigue (LCF), Microstructure, Thermo-mechanical processing (TMP), Transformation induced plasticity (TRIP), Twinning induced plasticity (TWIP)
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0142-1123
Kayıt Numarası	40bede1a-7c68-441b-9d92-71a1c961986c
Lokasyon	Mechanical Engineering
Tarih	2023-08
Notlar	Deutsche Forschungsgemeinschaft
Örnek Metin	A multi-phase non-equiatomic FeCrNiMnCo high entropy alloy (HEA) was fabricated using vacuum induction melting. Thermo-mechanical treatments consisting of cold rolling and annealing at 750 °C and 850 °C were employed to improve the mechanical properties of the HEA in focus. Tensile experiments revealed that yield strength and ultimate tensile strength levels can be enhanced significantly after thermo-mechanical processing (TMP). At the same time, ductility remains at an adequate level. Strain-controlled low-cycle fatigue (LCF) experiments were carried out in order to assess the mechanical properties of this HEA under cyclic loading conditions. At the same strain amplitude, the stress levels of the processed samples were considerably higher than that of the as-received counterpart. Similarly, fatigue lives of the former could surpass the base condition at the strain amplitudes of 0.2% and 0.4%; however, at the higher strain amplitudes, cyclic softening was observed. Electron backscatter diffraction (EBSD) and X-ray diffraction (XRD) results revealed that phase transformation from face-centered cubic (FCC) to body-centered cubic (BCC/B2) took place at a higher occurrence with increasing strain amplitude (0.2% to 0.6%). Furthermore, transmission electron microscopy (TEM) studies confirm that upon tensile deformation additional plasticity mechanisms, i.e., deformation twinning and phase transformation, contribute to the overall mechanical behavior of the multi-phase HEA.
DOI	10.1016/j.ijfatigue.2023.107678
Cilt	173

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On the low-cycle fatigue behavior of a multi-phase high entropy alloy with enhanced plasticity

Yazar Radi, Amin, Sajadifar, S., Seyedmohammadi, Seyedveghar, Krochmal, M., Bolender, A., Wegener, T., Niendorf, T., Yapıcı, Güney Güven

Basım Tarihi 2023-08

Basım Yeri - Elsevier

Konu High entropy alloy (HEA), Low-cycle fatigue (LCF), Microstructure, Thermo-mechanical processing (TMP), Transformation induced plasticity (TRIP), Twinning induced plasticity (TWIP)

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0142-1123

Kayıt Numarası 40bede1a-7c68-441b-9d92-71a1c961986c

Lokasyon Mechanical Engineering

Tarih 2023-08

Notlar Deutsche Forschungsgemeinschaft

Örnek Metin A multi-phase non-equiatomic FeCrNiMnCo high entropy alloy (HEA) was fabricated using vacuum induction melting. Thermo-mechanical treatments consisting of cold rolling and annealing at 750 °C and 850 °C were employed to improve the mechanical properties of the HEA in focus. Tensile experiments revealed that yield strength and ultimate tensile strength levels can be enhanced significantly after thermo-mechanical processing (TMP). At the same time, ductility remains at an adequate level. Strain-controlled low-cycle fatigue (LCF) experiments were carried out in order to assess the mechanical properties of this HEA under cyclic loading conditions. At the same strain amplitude, the stress levels of the processed samples were considerably higher than that of the as-received counterpart. Similarly, fatigue lives of the former could surpass the base condition at the strain amplitudes of 0.2% and 0.4%; however, at the higher strain amplitudes, cyclic softening was observed. Electron backscatter diffraction (EBSD) and X-ray diffraction (XRD) results revealed that phase transformation from face-centered cubic (FCC) to body-centered cubic (BCC/B2) took place at a higher occurrence with increasing strain amplitude (0.2% to 0.6%). Furthermore, transmission electron microscopy (TEM) studies confirm that upon tensile deformation additional plasticity mechanisms, i.e., deformation twinning and phase transformation, contribute to the overall mechanical behavior of the multi-phase HEA.

DOI 10.1016/j.ijfatigue.2023.107678

Cilt 173