Suppressing heating rate-dependent martensitic stabilization in ductile Cu-Al-Mn shape memory alloys by Ni addition: An experimental and first-principles study

Yang, Qin; Yin, Deqiang; Ge, Jiqiang; Chen, Jie; Wang, S.L.; Peng, Huabei; Wen, Yuhua

doi:10.1016/j.matchar.2018.09.002

Cited by 11 publications

(3 citation statements)

References 32 publications

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“…There are some studies in the literature about the production of Cu-Al-Mn alloys with the PM method and the relationship between the microstructure and mechanical properties [31,32]. For example, Yu-Yang Gao et al [33,34] in their study, they made a characterization study by adding different ratios of SiC to Al-Cu-Mg-Si-Mn composites by using PM method. They determined that the particles were dispersed homogeneously and the tensile strength increased.…”

Section: Introductionmentioning

confidence: 99%

Effect of Wc Reinforced on Microstructure and Mechanical Properties of Cualmn Alloys Produced by Hot Pressing Method

Çetin

Akkaş

2020

European Journal of Technic

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In this study, the effect of WC reinforcing particles on the microstructure and mechanical properties of CuAlMn and CuAlMn-WC alloy produced by powder metallurgy method was investigated by adding 5 %, 10 % and 15 % by volume WC to CuAlMn alloy. Cu, Al, Mn and WC powders of approximately 99.9 % purity with a grain size of 325 mesh were used in the production of the alloys. The samples were produced by hot pressing method at 900 ℃ temperatures under 35 MPa pressure for 6 minutes. Microstructure, phase formation, hardness and corrosion properties of the samples were investigated in detail. Scanning electron microscopy (SEM) was used for microstructure analysis and X-ray diffractogram (XRD) was used for phase formation detection. The hardness measurements of the samples were measured by microhardness measuring device. The corrosion tests were performed potentiodynamic polarization curves of the composite materials in 3.5% NaCl solution. As a result, it has been determined that the mechanical properties of WC reinforcing particles added to CuAlMn matrix increase with increasing volume ratio.

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Section: Introductionmentioning

confidence: 99%

Effect of Wc Reinforced on Microstructure and Mechanical Properties of Cualmn Alloys Produced by Hot Pressing Method

Çetin

Akkaş

2020

European Journal of Technic

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“…The best wear resistance and erosion resistance of Cu-Al alloy are achieved when the aluminum content is between 15.625 at.% and 18.750 at.% (at.% refers to atomic percent). Yang et al [11] examined the role of Ni in Cu-Al-Mn alloy through a combination of first-principles calculations and experiments, showing that Ni not only significantly improves the shape memory effect of the alloy but also suppresses the temperature-dependent martensitic stabilization. He et al [12] investigated the corrosion interface and characteristics of the Cu-C alloy in liquid Ga at temperatures ranging from 100 °C to 180 °C.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Influence of Alloy Atomic Doping on the Properties of Cu-Sn Alloys Based on First Principles

Wei,

Chen,

Xue

et al. 2024

Metals

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In order to design Cu-Sn alloys with excellent overall performance, the structural stability, mechanical properties, and electronic structure of X-doped Cu-Sn alloys were systematically calculated using first-principles calculations. The calculation results of the cohesive energy indicate that the Cu-Sn-X structures formed by X atoms (X = Ag, Ca, Cd, Mg, Ni, Zr) doping into Cu-Sn can stably exist. The Cu-Sn-Ni structure is the most stable, with a cohesive energy value of −3.84 eV. Doping of X atoms leads to a decrease in the bulk modulus, Possion’s ratio and B/G ratio. However, doping Ag and Ni atoms can improve the shear modulus, Young’s modulus, and strain energy of the dislocation. The doping of Ni has the highest enhancement on shear modulus, Young’s modulus, and strain energy of the dislocation, with respective values as follows: 63.085 GPa, 163.593 GPa, and 1.689 W/J·m−1. The analysis of electronic structure results shows that the covalent bond between Cu and X is the reason for the performance differences in Cu-Sn-X structures.

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“…The results of microalloying with nickel showed that there is a decrease in grain size and an improvement in the shape memory effect, but at the same time there is a decrease in the ductility of the alloy and a shift in the martensitic transformation to lower values [23][24][25][26]. Moreover, the nickel is completely soluble in the β-phase, as are the microalloying elements Zn, Sn, and Au, forming a single-phase system, in contrast to Cu-Al-Mn microalloys with Fe, Ti, Cr, V, Co, and Si, which exhibit lower solubility in the matrix and a tendency to precipitate [25,27].…”

Section: Introductionmentioning

confidence: 99%

Influence of Manganese Content on Martensitic Transformation of Cu-Al-Mn-Ag Alloy

Liverić,

Holjevac Grgurić,

Mandić

et al. 2023

Materials

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The influence of manganese content on the formation of martensite structure and the final properties of a quaternary Cu-Al-Mn-Ag shape memory alloy (SMA) was investigated. Two alloys with designed compositions, Cu- 9%wt. Al- 16%wt. Mn- 2%wt. Ag and Cu- 9%wt. Al- 7%wt. Mn- 2%wt. Ag, were prepared in an electric arc furnace by melting of high-purity metals. As-cast and quenched microstructures were determined by optical microscopy and scanning electron microscopy equipped with EDS. Phases were confirmed by high-energy synchrotron radiation and electron backscatter diffractions. Austenite and martensite transformations were followed by differential scanning calorimetry and hardness was determined using the Vickers hardness test. It was found that the addition of silver contributes to the formation of the martensite structure in the Cu-Al-Mn-SMA. In the alloy with 7%wt. of manganese, stable martensite is formed even in the as-cast state without additional heat treatment, while the alloy with 16%wt. of manganese martensite transforms only after thermal stabilization and quenching. Two types of martensite, β1′ and γ1′, are confirmed in the Cu-9Al-7Mn-2Ag specimen. The as-cast SMA with 7%wt. Mn showed significantly lower martensite transformation temperatures, Ms and Mf, in relation to the quenched alloy. With increasing manganese content, the Ms and Mf temperatures are shifted to higher values and the microhardness is lower.

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Suppressing heating rate-dependent martensitic stabilization in ductile Cu-Al-Mn shape memory alloys by Ni addition: An experimental and first-principles study

Cited by 11 publications

References 32 publications

Effect of Wc Reinforced on Microstructure and Mechanical Properties of Cualmn Alloys Produced by Hot Pressing Method

Effect of Wc Reinforced on Microstructure and Mechanical Properties of Cualmn Alloys Produced by Hot Pressing Method

Investigation of the Influence of Alloy Atomic Doping on the Properties of Cu-Sn Alloys Based on First Principles

Influence of Manganese Content on Martensitic Transformation of Cu-Al-Mn-Ag Alloy

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