Investigation of shape memory characteristics and production of HfZrTiFeMnSi high entropy alloy by mechanical alloying method

Güler, Ömer; Şimşek, Tuncay; Özkul, İskender; Avar, Barış; Canbay, Canan Aksu; Chattopadhyay, Arun K.; Güler, Seval Hale

doi:10.1016/j.cap.2021.10.010

Cited by 14 publications

(3 citation statements)

References 32 publications

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“…For comparison, mechanical alloying (MA) can produce a very uniform solid solution structure, avoiding the formation of any adverse intermetallic phases. Gülera et al [69] first adopt the MA method to prepare TiHfZrFeMnSi high-entropy shape-memory alloys. It is found that the TiHfZrFeMnSi high-entropy shape-memory alloy powders show relatively uniform agglomerated particles after being ball milled for 60 h or more.…”

Section: Ti-based High-entropy Shape-memory Alloymentioning

confidence: 99%

Development of High-Entropy Shape-Memory Alloys: A Review

Liu

et al. 2023

Metals

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High-entropy shape-memory alloys (HESMAs) exhibit unique properties, including high yield strength, a wide temperature range of phase transformation, and excellent thermal cycling stability, among others. Hence, they have broad prospects for research and application. Currently, various new high-entropy shape-memory alloys have been developed based on TiNi, Fe-based, Ti-based, and NiMn-based alloys. This article focuses on summarizing and analyzing the research status of various types of high-entropy shape-memory alloys, including their microstructure characteristics, martensitic phase transformation, and functional properties. The advantages and disadvantages of high-entropy shape-memory alloys compared to traditional shape-memory alloys are briefly discussed. Finally, based on the analysis of existing problems, future research prospects are proposed, hoping to provide assistance for the development and application of high-entropy shape-memory alloys in the future.

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Section: Ti-based High-entropy Shape-memory Alloymentioning

confidence: 99%

Development of High-Entropy Shape-Memory Alloys: A Review

Liu

et al. 2023

Metals

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“…After sealing, powders were ball‐milled on a planetary ball mill at 450 r/min for 60 h, during which powders were taken out and pounded once every 20 h. This method could obtain TiB 1.5 powder. The TiB 1.5 powder obtained by mechanical alloying (MA) 20,21 for 60 h and the TaB 2 , NbB 2 , and VB 2 powders refined for 20 h were put into a carbide jar in equal moles, and the ball mill was mixed in a planetary ball mill. The rotating speed was 200 r/min for 2 h. The powder obtained by mixing put into a graphite mold for SPS 22,23 .…”

Section: Introductionmentioning

confidence: 99%

Characterization and analysis of high‐entropy boride ceramics sintered at low temperature

Zou

et al. 2023

J Am Ceram Soc.

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Multicomponent transition metal boride composite–sintered bodies were prepared by spark plasma sintering, and the composite sintered bodies prepared at different sintering temperatures (1500–1900°C) were characterized. The experimental results showed that several other compounds diffused into the TiBx phase at lower sintering temperatures under the combined effect of temperature and pressure due to the nonstoichiometric ratio of TiB1.5 vacancies. When the temperature reached 1900°C, only the hexagonal phase remained. With the continuous increase of sintering temperature, the Vickers hardness and fracture toughness of the sintered bodies had a trend of increasing first and then decreasing, due to the continuous reduction of the porosity of the cross section of the sintered bodies and the growth of the grain size. The Vickers hardness and fracture toughness of sintered body obtained at 1800°C are the best, which are 24.4 ± 1.8 GPa and 5.9 ± 0.2 MPa m1/2. At 1900°C, the sintered body was a single‐phase hexagonal high‐entropy diboride. Its Vickers hardness and fracture toughness were 21.9 ± 1.5 GPa and 5.4 ± 0.2 MPa m1/2, respectively; it showed a clear downward trend.

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“…Yeh et al [6] established a basic set of conditions for HEAs known as the four core effects: high-entropy effect, sluggish diffusion, severe lattice distortion, and cocktail effect [3,7]. Owing to the wide range and complexity of chemical composition and four core effects, HEAs have some superior properties, which include high hardness and strength [8,9], high-temperature strength [10], high corrosion resistance [11,12], impressive magnetic properties [13], and notable shape memory effect [14].…”

Section: Introductionmentioning

confidence: 99%

Alloying, phases and magnetic behaviour of mechanically alloyed FeNiMnCu-based high entropy alloys

Jahani

Reihanian

Gheisari

2023

Materials Science and Technology

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In the present work, FeNiMnCuX (X: Co, Cr, Mo, Ti, W) high entropy alloys are successfully fabricated by mechanical alloying. After 15 h of milling, FeNiMnCu and FeNiMnCuCo alloys form a single FCC structure, while other alloys formed an FCC + BCC mixture structure. All alloys contained homogeneous distributions of Fe and Ni, while Cu was segregated. Alloys FeNiMnCuTi and FeNiMnCuW exhibited homogeneous distributions of Mn, whereas others exhibited Mn-rich islands. Except for the FeNiMnCuTi alloy, all alloys exhibited a soft magnetic behaviour. The saturation magnetisation of the base FeNiMnCu alloy was increased by adding Co and decreased by adding Cr, Mo, Ti, and W.

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Investigation of shape memory characteristics and production of HfZrTiFeMnSi high entropy alloy by mechanical alloying method

Cited by 14 publications

References 32 publications

Development of High-Entropy Shape-Memory Alloys: A Review

Development of High-Entropy Shape-Memory Alloys: A Review

Characterization and analysis of high‐entropy boride ceramics sintered at low temperature

Alloying, phases and magnetic behaviour of mechanically alloyed FeNiMnCu-based high entropy alloys

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