New Developments of Al-Zn Cast Alloys

Krajewski, W.; Buraś, J.; Krajewski, Paweł; Greer, A.L.; Faerber, Katharina; Schumacher, Peter

doi:10.1016/j.matpr.2015.10.078

Cited by 24 publications

(16 citation statements)

References 10 publications

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“…Especially the high damping capacity of ZA alloys is useful to attenuate the undesirable noise and mechanical vibration under dynamic working condition [4,5].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Effect of combined addition of Al-Ti-B ribbon and Zr element on the microstructure, mechanical and damping properties of ZA22 alloy

Liu

Wang

et al. 2017

Materials & Design

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“…Especially the high damping capacity of ZA alloys is useful to attenuate the undesirable noise and mechanical vibration under dynamic working condition [4,5].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Effect of combined addition of Al-Ti-B ribbon and Zr element on the microstructure, mechanical and damping properties of ZA22 alloy

Liu

Wang

et al. 2017

Materials & Design

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“…4. Influence of the grain refinement on the attenuation coefficient [7] As mentioned above the grain refinement is aimed mainly at improving ductility. Figures 5 and 6 show strength properties of the cast samples of initial non-modified Al-20Zn alloy (Fig.…”

Section: Resultsmentioning

confidence: 99%

Ultrasound Wave Attenuation of Grain Refined High – Zinc Aluminium Sand-cast Alloys

Krajewski¹,

Buraś²,

Krajewski³

et al. 2015

Archives of Foundry Engineering

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The paper presents results of measuring attenuation coefficient of the Al-20 wt.% Zn alloy (AlZn20) inoculated with different grain refiners. During experiments the melted alloys were doped with Al-Ti3-C0.15 refining master alloy. Basing on measurements performed by Krautkramer USLT2000 device with 1MHz ultrasound wave frequency it was stated that grain refinement reduces the attenuation coefficient by about 20-25%. However, the examined alloys can be still classified as the high-damping ones of attenuation greater than 150 dB/m.

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“…15 causes intensive structure refinement, while the intensity of reaction of both master alloys is comparable. The inoculation with the master alloy AlTi3C0.15, selected for further studies, causes approximately twenty times decrease in size of grains of the alloy AlZn20 in the case of 100 ppm Ti addition.…”

Section: Tensile Properties Of Alloy Alzn20 Inoculated With Alti3c01mentioning

confidence: 98%

“…Experimental results showed that the inoculation of high zinc aluminium alloy AlZn20 with the master alloys AlTi5B1 and AlTi3C0. 15 causes intensive structure refinement, while the intensity of reaction of both master alloys is comparable. The AlTi3C0.15 master alloy addition, selected for further studies, introducing about 100 ppm Ti, enhances the tensile properties of the alloy; the elongation increases about 20% and tensile strength increases about 10% against the initial values (uninoculated alloy).…”

mentioning

confidence: 98%

Strength properties examination of high zinc aluminium alloys inoculated with Ti addition

et al. 2017

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Male, born in 1971, Ph.D., Assistant Professor, a member of Polish Foundrymen Association. His research mainly focuses on the structure and properties of nonferrous castings. To date, he has published more than 30 papers. C astings are present in almost all machines and appliances. At present, among the materials used for castings, aluminium alloys are particularly important as they have the continual tendency to weight reduction within the final product and reductions in energy consumption in the production of castings, which in turn has a strong link to environmental protection. In general, most aluminium alloys after being cast have relatively low strength properties. However, the exception is a group of high zinc aluminium alloys with the composition of Al-(10-30)wt.%Zn, which features high tensile strength, acquired both in the sand and metal moulds, e.g. tensile strength of the Al-20wt.%Zn alloy exceeds 200 MPa, while physical elongation reaches relatively low values, usually below 4% [1,2] .High zinc aluminium alloys, similarly to high aluminium zinc alloys, feature coarse-grained structure of sand mould castings and therefore a series of treatments Abstract: This paper includes studies on the influence of grain refinement treatment with respect to the composition and structure of high zinc aluminium casting alloys on the changes of their tensile properties. The Al20wt.%Zn alloy was inoculated with master alloys AlTi5B1 and AlTi3C0.15 to determine the impact of a variable titanium addition on the tensile properties of AlZn20 alloy, and determine on this basis an optimal addition of Ti that would ensure the improvement of elongation of alloys cast in the sand mould, at the same time maintaining high tensile strength. Within the studies, light microscopy (LM) and strength tests were applied. Experimental results showed that the inoculation of high zinc aluminium alloy AlZn20 with the master alloys AlTi5B1 and AlTi3C0.15 causes intensive structure refinement, while the intensity of reaction of both master alloys is comparable. The AlTi3C0.15 master alloy addition, selected for further studies, introducing about 100 ppm Ti, enhances the tensile properties of the alloy; the elongation increases about 20% and tensile strength increases about 10% against the initial values (uninoculated alloy). Further increase of the Ti addition up to 500-600 ppm leads to the "overinoculation" effect that is accompanied by the decrease of elongation. Therefore,the Ti addition should be reduced to the level of about 100 ppm which ensures obtaining a set of optimal properties.

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New Developments of Al-Zn Cast Alloys

Cited by 24 publications

References 10 publications

Effect of combined addition of Al-Ti-B ribbon and Zr element on the microstructure, mechanical and damping properties of ZA22 alloy

Effect of combined addition of Al-Ti-B ribbon and Zr element on the microstructure, mechanical and damping properties of ZA22 alloy

Ultrasound Wave Attenuation of Grain Refined High – Zinc Aluminium Sand-cast Alloys

Strength properties examination of high zinc aluminium alloys inoculated with Ti addition

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