Low Cycle Mechanical and Fatigue Properties of AlZnMgCu Alloy

Pysz, S.; Czekaj, E.; Żuczek, R.; Maj, M.; Piekło, J.

doi:10.1515/afe-2016-0003

Cited by 6 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pysz et al also found that the liquidus and solidus temperatures of 7075 Al alloy were 637.0 °C and 475.5 °C, respectively. The initial solidification temperature and peak temperatures of solidification were 632.8 °C and 625.1 °C [ 25 ]. The gap between the liquidus and solidus temperatures was 161.5 °C, and the nucleation undercooling of 7075 Al alloy was 4.2 °C.…”

Section: Resultsmentioning

confidence: 99%

Refining Mechanism of 7075 Al Alloy by In-Situ TiB2 Particles

et al. 2017

View full text Add to dashboard Cite

The nucleation undercooling of TiB2/7075 Al matrix composites, the microstructure observed after solidification at different cooling rate, and the size and distribution of TiB2 particles were investigated. The experimental results have shown that the grain sizes of TiB2/7075 Al matrix composites firstly decreased, then increased, and finally decreased again with the increase of TiB2 content. The nucleation undercooling of TiB2/7075 Al matrix composites first increased, then decreased, and finally increased again with the increase of TiB2 content when the cooling rates was 5 and 10 °C/min respectively, but kept decreasing with the increase of TiB2 content at a cooling rate of 20 °C/min. The melting and solidification process showed no significant change with the decrease of cooling rate in 9.0% TiB2/7075 Al matrix composites. Most small particles can act as heterogeneous nucleus, which induced grain growth and were captured into the grain by the solid/liquid interface. At the same time, most of the larger particles and a minority of the small TiB2 particles are pushed into the grain boundary; locating in the grain boundary can hinder the Al atoms from diffusing during the solidification process and restrain α-Al phase growth. The influence of particles shifted from dominating by locating to dominating by nucleation as the quantity of TiB2 particles increased.

show abstract

Section: Resultsmentioning

confidence: 99%

Refining Mechanism of 7075 Al Alloy by In-Situ TiB2 Particles

et al. 2017

View full text Add to dashboard Cite

show abstract

“…This method description oriented towards problems concerning foundry alloys and their theoretical bases is presented in [13]. An example of this method of application in analyzing the casting of an automotive vehicle suspension (a so-called "rocker" made of an AlZnMgCu alloy) that allowed us to determine Parameters b and c resulting from the Manson-Coffin-Morrow dependence can be found in [14]:…”

Section: Modified Low-cycle Fatigue Testmentioning

confidence: 99%

Archives of Metallurgy and Materials

Zych¹,

Piekło²,

Maj³

et al. 2019

View full text Add to dashboard Cite

Fatigue investigations of two 4XXX0-series aluminum alloys (acc. PN-EN 1706) within a range of fewer than 10 4 cycles at a coefficient of cycle asymmetry of R = -1 were performed in the current paper. The so-called modified low-cycle test, which provided additional information concerning the fatigue life and strength of the tested alloys, was also performed. The obtained results were presented in the form of diagrams: stress amplitude σ a -number of cycles before damage N. On the basis of the microscopic images of sample fractures, the influence of the observed casting defects on the decrease of cycle numbers at a given level of stress amplitude were analyzed. Based on the images and dimensions of the observed defects, stress intensity factor K I was analytically determined for each. Their numerical models were also made, and stress intensity factor K I was calculated by the finite element method (FEM).

show abstract

“…[1,2,3,4,5,6] The 7xxx series as alloys used in the plastic forming are characterized by high strengths of over 500 MPa and good plasticity up to 20%. [7] The lack of metal forming (forging, rolling), eliminates one of the strengthening mechanisms which is squeeze hardening.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Microporosity on the Mechanical Properties of the AlZnMgCu Alloy, Based on the Numerical Analysis and Laboratory Trials

Pysz¹,

Żuczek²,

Piekło³

et al. 2017

Archives of Foundry Engineering

Self Cite

View full text Add to dashboard Cite

The ecological meanings clearly indicates the need of reducing of the concentration of the CO 2 in the atmosphere, which can be accomplished through the lowering of the fuel consumption. This fact implies the research for the new construction solutions regarding the reduction of the weight of vehicles. The reduced weight of the vehicle is also important in the case of application of the alternative propulsion, to extend the lifetime of the batteries with the reduction of recharge cycles. The use of cast alloy AlZnMgCu compliant of plastic forming class 7xxx alloy, are intended to significantly reduce the weight of the structures, while ensuring high strength properties. The wide range of the solidification temperature, which is more than 150°C, characterizes this alloy with a high tendency to create the micro and macro porosity. The study presents the relationship between the cooling rate and the area of occurrence and percentage of microporosity. Then the results were linked to the local tensile strength predicted in the simulation analysis. The evaluation of the microporosity was performed on the basis of the CT (computed tomography) and the analysis of the alloy microstructure. The microstructure analysis was carried out on test specimen obtained from the varying wall thickness of the experimental casting. The evaluation of the mechanical properties was prepared on the basis of the static tensile test and the modified low cycle fatigue test (MLCF).

show abstract

Low Cycle Mechanical and Fatigue Properties of AlZnMgCu Alloy

Cited by 6 publications

References 3 publications

Refining Mechanism of 7075 Al Alloy by In-Situ TiB2 Particles

Refining Mechanism of 7075 Al Alloy by In-Situ TiB2 Particles

Archives of Metallurgy and Materials

The Influence of the Microporosity on the Mechanical Properties of the AlZnMgCu Alloy, Based on the Numerical Analysis and Laboratory Trials

Contact Info

Product

Resources

About