Martensitic transformation behaviour and mechanical property of dual-phase Ni-Co-Mn-Sn-Fe ferromagnetic shape memory alloys

Zhang, Yajiu; Guo, Jinpei; Zhong, Minting; Xiang, Wanwan; Wu, Zhigang

doi:10.1016/j.jmmm.2020.167540

Cited by 12 publications

(5 citation statements)

References 31 publications

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“…In contrast, the observed energy reduction by forming the

{(X \overset{false¯}{2})}_{2}

stacking directly suggested that the lowest‐energy phase should consist only of twins with the preferred width, which means it should be the 4O orthorhombic martensite with

{(2 \overset{false¯}{2})}_{2}

stacking. This conclusion attracted considerable attention in the community, especially because the 4O martensite was indeed observed in related Ni–Mn–Fe‐based and Ni–Co–Mn‐based alloys [ 67,68 ] and was even shown to be the most stable phase in Mn‐rich Ni–Mn–X (X = Sn, In, Sb) alloys. [ 69–73 ] However, no experimental evidence has been reported for the existence of 4O martensites in Ni–Mn–Ga, which was rationalized either by the easy austenite → 10M transition path [ 48 ] or, in line with the adaptive concept, by unmet compatibility conditions between austenite and 4O.…”

Section: Search For the Ground State Of Ni2mngamentioning

confidence: 99%

Experimental Observations versus First‐Principles Calculations for Ni–Mn–Ga Ferromagnetic Shape Memory Alloys: A Review

Seiner

Zelený

Sedlák

et al. 2022

Physica Rapid Research Ltrs

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This review summarizes recent advances in first‐principles simulations of the structural, mechanical, and magnetomechanical properties of Ni–Mn–Ga‐based ferromagnetic shape memory alloys from the perspective of experimental characterization. It focuses on calculations that can capture the main features of the low‐temperature phases, particularly the appearance of spatial modulations, the occurrence of intermartensitic transitions, and the high mobility of the twin boundaries, which allows for magnetically induced reorientation. Although the calculations can only be used to interpret some of these features and are not yet ready to be used as a tool for designing new alloys with the required properties, the gap between experimental observations and simulations is narrowing. When experiments and theory are discussed together, new challenges arise for both. In addition, new results on first‐principles‐determined elastic constants of the 10M martensite of Ni–Mn–Ga are presented and discussed with respect to the high mobility of the twin boundaries.

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“…In contrast, the observed energy reduction by forming the

{(X \overset{false¯}{2})}_{2}

stacking directly suggested that the lowest‐energy phase should consist only of twins with the preferred width, which means it should be the 4O orthorhombic martensite with

{(2 \overset{false¯}{2})}_{2}

Section: Search For the Ground State Of Ni2mngamentioning

confidence: 99%

Experimental Observations versus First‐Principles Calculations for Ni–Mn–Ga Ferromagnetic Shape Memory Alloys: A Review

Seiner

Zelený

Sedlák

et al. 2022

Physica Rapid Research Ltrs

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“…It was discovered via research on NiMnGa-Co-based Heusler alloys that the microstructure of the alloys may be determined by employing Marble's reagent as an etchant. Additionally, the Marble's reagent was used to analyse the principal makeup of numerous additional works including one in which the major composition of Heusler alloys was Ni-Mn-Sn [16][17][18][19][20][21][22][23].…”

Section: See Equation (1) Belowmentioning

confidence: 99%

Vickers micro-hardness variation during change in concentration of constituent elements in Ni_50–xFe_xMn₃₀Sn_20–yIn_y, Heusler alloys

B.R.N.

Sharma

et al. 2022

Manufacturing Rev.

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Present work is on Heusler alloys of the sequence Ni50–xFexMn30Sn20–yIny, were prepared in order to investigate the relationship between microstructure and mechanical property. The work represents the variations in the hardness of the alloy when the component elements are changed. Alloys show Vickers hardness HV = 3.5 GPa at x = 2 and y = 4. At x = 4 and y = 8, alloy exhibits an L10 tetragonal structure, whereas at x = 3 and y = 6 L21 austenite phase structure is observed. Interface piling up occurs which greatly reduces fracture propagation and dislocation at neighboring interfaces. Large piled-up interfaces available in the martensite phase due to the sub-strips significantly contribute this process resulting in large hardness value. In spite of thicker laminates in the austenite phase, the alloy exhibits higher hardness than martensite phase or even the composite. Hardness is particularly low in the martensitic phase (x = 4, y = 8), which is produced owing to interfacial motion. The hardness value falls as the Sn concentration increases due to weak pinning between the strips. A drastic increase in hardness of 3.5 GPa has been observed when x = 2 and y = 4.

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“…Ni 2 MnGa is a representative and the most investigated member of this class of materials, which shows a huge magnetic-field-induced strain (MFIS) below the austenite–martensite transformation, of the order of several percent, as evidenced by Ullakko et al [ 12 ]. However, the compound’s brittleness makes it difficult to be used in applications, and for this reason the search for new Heusler alloys that undergo an MT was extended comprising Co-Ni-Ga [ 13 , 14 , 15 ] and Ni-Mn-(Al, In, Sn) [ 16 , 17 , 18 , 19 , 20 , 21 ]. Ni-Fe-Ga alloys [ 22 , 23 , 24 , 25 , 26 ] have emerged as good candidates for replacing the brittle Ni-Mn-Ga in applications [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Processing Effects on the Martensitic Transformation and Related Properties in the Ni55Fe18Nd2Ga25 Ferromagnetic Shape Memory Alloy

et al. 2022

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The influence of processing on the martensitic transformation and related magnetic properties of the Ni55Fe18Nd2Ga25 ferromagnetic shape memory alloy, as bulk and ribbons prepared by the melt spinning method and subjected to different thermal treatments, is investigated. Structural, calorimetric, and magnetic characterizations are performed. Thermal treatment at 1173 K induces a decrease in both the Curie and the martensitic transformation temperatures, while a treatment at 673 K produces the structural ordering of the ribbons, hence an increase in TC. A maximum value of the magnetic entropy variation of −5.41 J/kgK was recorded at 310 K for the as quenched ribbons. The evaluation of the magnetoresistive effect shows a remarkable value of −13.5% at 275 K on the bulk sample, which is much higher than in the ribbons.

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Martensitic transformation behaviour and mechanical property of dual-phase Ni-Co-Mn-Sn-Fe ferromagnetic shape memory alloys

Cited by 12 publications

References 31 publications

Experimental Observations versus First‐Principles Calculations for Ni–Mn–Ga Ferromagnetic Shape Memory Alloys: A Review

Experimental Observations versus First‐Principles Calculations for Ni–Mn–Ga Ferromagnetic Shape Memory Alloys: A Review

Vickers micro-hardness variation during change in concentration of constituent elements in Ni_50–xFe_xMn₃₀Sn_20–yIn_y, Heusler alloys

Processing Effects on the Martensitic Transformation and Related Properties in the Ni55Fe18Nd2Ga25 Ferromagnetic Shape Memory Alloy

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Martensitic transformation behaviour and mechanical property of dual-phase Ni-Co-Mn-Sn-Fe ferromagnetic shape memory alloys

Cited by 12 publications

References 31 publications

Experimental Observations versus First‐Principles Calculations for Ni–Mn–Ga Ferromagnetic Shape Memory Alloys: A Review

Experimental Observations versus First‐Principles Calculations for Ni–Mn–Ga Ferromagnetic Shape Memory Alloys: A Review

Vickers micro-hardness variation during change in concentration of constituent elements in Ni50–xFexMn30Sn20–yIny, Heusler alloys

Processing Effects on the Martensitic Transformation and Related Properties in the Ni55Fe18Nd2Ga25 Ferromagnetic Shape Memory Alloy

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Vickers micro-hardness variation during change in concentration of constituent elements in Ni_50–xFe_xMn₃₀Sn_20–yIn_y, Heusler alloys