TY - JOUR

T1 - Effect of heat treatment on structure and magnetic properties of Ni36Co37Al27 alloy produced by laser powder bed fusion

AU - Mazeeva, A.k.

AU - Kim, A.

AU - Shamshurin, A.i.

AU - Razumov, N.g.

AU - Nazarov, D.v.

AU - Borisov, A.n.

AU - Popovich, A.a.

PY - 2023/3/1

Y1 - 2023/3/1

N2 - In this paper the effect of heat treatment on the structure and magnetic properties of Ni36Co37Al27 alloyobtained by laser powder bed fusion from powders synthesized by mechanical alloying and plasmaspheroidization was studied. This alloy is promising to exhibit a magnetically controlled shape memoryeffect at room temperature. It was shown that the base of the alloy was two-phase (β + γ). Sizes of thestructural elements increases with a rise in annealing temperature (Tann), however, the ratio of γ- to β-phasedecreases from Tann = 900 °С to Tann= 1300 °С, which agrees well with the observed monotonic decrease insaturation magnetization. It was also found that Hc of the alloy increases from 74.9 Oe in non-heat-treatedstate to about 120 Oe after the heat treatment, which is due to a decreased content of γ-phase in combination with the precipitation of γ'-phase inclusions. The results obtained can be used in the future tomanipulate the high-coercivity properties of Ni-Co-Al alloys at different stages of additive manufacturing

AB - In this paper the effect of heat treatment on the structure and magnetic properties of Ni36Co37Al27 alloyobtained by laser powder bed fusion from powders synthesized by mechanical alloying and plasmaspheroidization was studied. This alloy is promising to exhibit a magnetically controlled shape memoryeffect at room temperature. It was shown that the base of the alloy was two-phase (β + γ). Sizes of thestructural elements increases with a rise in annealing temperature (Tann), however, the ratio of γ- to β-phasedecreases from Tann = 900 °С to Tann= 1300 °С, which agrees well with the observed monotonic decrease insaturation magnetization. It was also found that Hc of the alloy increases from 74.9 Oe in non-heat-treatedstate to about 120 Oe after the heat treatment, which is due to a decreased content of γ-phase in combination with the precipitation of γ'-phase inclusions. The results obtained can be used in the future tomanipulate the high-coercivity properties of Ni-Co-Al alloys at different stages of additive manufacturing

KW - Heat treatment

KW - Laser powder bed fusion

KW - Selective laser melting

KW - Additive manufacturing

KW - Ferromagnetic shape memory alloy

KW - Coercivity

KW - Additive manufacturing

KW - Coercivity

KW - Ferromagnetic shape memory alloy

KW - Heat treatment

KW - Laser powder bed fusion

KW - Selective laser melting

UR - https://www.mendeley.com/catalogue/eaf4db03-e294-33b1-b895-fd11ec850802/

U2 - 10.1016/j.jallcom.2022.168461

DO - 10.1016/j.jallcom.2022.168461

M3 - Article

VL - 938

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

M1 - 168461

ER -