Comparative studies on microstructures and properties of Cu–Ni–M alloys controlled by strong interaction between elements

Li, Z.M.; Li, X.N.; Wang, C.Y.; Zheng, Yuehong; Yu, Qun; Cheng, Xinquan; Li, N.J.; Bi, Linxia; Wang, Q.; Chen, Dong

doi:10.1016/j.jallcom.2019.07.073

Cited by 17 publications

(4 citation statements)

References 59 publications

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“…Under the traditional smelting process, alloying is often used to improve the microstructure and properties of Cu-Ni-Sn alloy [13][14][15]. It has been reported that the microalloying elements in Cu-Ni-Sn alloy has a positive effect on the inhibition of DP [16,17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

Zhang

Shu³

et al. 2022

Materials

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In the present study, Mo was added to Cu–15Ni–8Sn alloy as the fourth element to solve the limitation of service performance of the alloy by composition design. The phase composition, microstructure transformation and mechanical properties of Cu–15Ni–8Sn–xMo (x = 0.3, 0.9, 1.5 wt.%) alloy were systematically studied by simulation calculation and experimental characterization. The results show that the addition of Mo can improve the as-cast structure of Cu–15Ni–8Sn alloy and reduce segregation and Cu–Mo phase precipitates on the surface with the increase in Mo contents. During solution treatment, Mo can partially dissolve into the matrix, which may be the key to improving the properties of the alloy. Furthermore, the discontinuous precipitation of Sn can be effectively inhibited by adding the appropriate amount of Mo to Cu–15Ni–8Sn alloy, and the hardness of alloy does not decrease greatly after a long-time aging treatment. When Mo content is 0.9 wt.%, the alloy reaches the peak hardness of 384 HV at 4 h of aging. These results provide new ideas for composition optimization of Cu–15Ni–8Sn alloy.

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Section: Introductionmentioning

confidence: 99%

Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

Zhang

Shu³

et al. 2022

Materials

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“…Пігментна система листя є одним з найважливіших показників фотосинтетичної діяльності рослин. Її основними компонентами є зелені пігменти -хлорофіли a і b. Їх накопичення в листках, як і в усій рослині, надалі впливає на синтез біомаси і формування врожаю дерев [7,8].…”

Section: білоцерківський національний аграрний університетunclassified

Components of photosynthetic activity of cherry trees in the Right-Bank Forest-Steppe of Ukraine

et al. 2022

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The article presents the results of research on the photosynthetic activity of cherry trees. The aim of the research was to study the morphological, growth and biochemical characteristics of the leaf cover of cherry trees depending on the time of fruit ripening. Observations, analysis and laboratory studies reveal morphological and biochemical features of annual tree growth, total leaf surface and content of green pigments in the leaves which is one of the main indicators of photosynthetic potential of fruit trees. It was established that Dar Mlieva was characterized by the largest total length of annual increments among early ripening varieties, Melitopolʹsʹka krapchasta variety – among medium ripening varieties, and Drogana zhovta variety among late ripening varieties. Aborehenka variety had the largest average length of shoots, and Mirage variety had the smallest length. The number of shoots on the tree and the activity of annual new ramules make the shoot-forming ability. Cherry varieties are divided into groups according to the obtained data: with a high degree of shoot formation – Dar Mlieva, Zoryana, Mirage, Melitopolʹsʹka krapchasta and Drogana zhovta; middle degree – Mliivsky zhovta, Aboriginal, Meotida, Amazon and low degree – varieties Alyonushka, Biryuza, Donetsky uholʹok. Low leaf area of cherry plantations negatively affected the activity of the processes of photosynthesis and productivity of plantations aged 6–8 years and made 14–35 % of the optimal. The content of chlorophyll in the leaves depended largely on the characteristics of the pomological variety, while for the maturity of the fruit, the dependence was not detected. The middle maturity cherry varieties of Mirage and Meotida diﬀered favorably in the content in the leaf of pigments of photosynthesis of carotenoids, chlorophyll a, b, as well as the sum of a + bchlorophylls . The content of these indicators exceeded the indicators of other studied varieties by 25 % on average. Key words: sweet cherry, photosynthesis, total leaf surface, length of annual increments, chlorophyll content.

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“…Cu-Ni alloy is a simple binary alloy. High strength Cu-Ni alloys can be realised through additional alloying elements to its binary alloys [9,10,11]. Cu-Ni alloys containing other alloying elements outperform single binary Cu-Ni alloys in terms of mechanical properties, alloy's ability to resist corrosion in aqueous environments, low sensitivity to hydrogen embrittlement, and good anti-biofouling capabilities [8].…”

Section: Introductionmentioning

confidence: 99%

TITANIUM ADDITION AND AGEING INFLUENCE ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Cu-10Ni ALLOY

Nwaeju¹,

Edoziuno²,

Nnuka³

2022

IJEAST

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— The need to develop alloys with enhanced properties that will perform efficiently has continually become the major concern. In this study, the influence of Ti addition on the microstructure and mechanical properties of Cu-10Ni alloy was investigated. Cu-10Ni alloy was altered by adding Ti in the concentrations of 0.1, 0.2, 0.3, and 0.4wt%. The as-cast samples of Cu-10Ni alloy were solution treated at 900oC for 2 hr, quenched in water, and then aged at three different temperatures (400oC, 450oC and 500o ) for 2hr. Microstructural characteristics were observed using metallurgical microscope, and scanning electron microscope equipped with EDS, while tensile strength, hardness, impact strength and ductility as a function of mechanical properties were determined. Adding Ti contents in Cu-10Ni alloy and ageing at different temperatures greatly increased the properties and grain refinement of the alloy. The improvement in properties were due to slight promotion of precipitation and occurrence of enhanced TiNi3 particles after ageing treatment. The as-cast Cu-10Ni alloy had a peak value of 163MPa tensile strength, 127BHN hardness, and 142J impact strength at 0.1%Ti. Under the ageing condition, the samples with 0.4%Ti had peak tensile strength, hardness, and impact strength values of 574MPa, 193BHN, and 138j, respectively. The variation in the values of the tested properties of the alloys was measured on the role of the ageing temperature. The Ti addition promotes the growth of precipitates, which refines the microstructure during the ageing process and results in an excellent improvement of the properties of the Cu-Ni alloys.

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Comparative studies on microstructures and properties of Cu–Ni–M alloys controlled by strong interaction between elements

Cited by 17 publications

References 59 publications

Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

Components of photosynthetic activity of cherry trees in the Right-Bank Forest-Steppe of Ukraine

TITANIUM ADDITION AND AGEING INFLUENCE ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Cu-10Ni ALLOY

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