Large Strain Behaviour of ZEK100 Magnesium Alloy at Various Strain Rates

The objective of this study is to investigate the hysteresis loss of ultra-large off-the-road (OTR) tire rubber compounds based on typical operating conditions at mine sites. Cyclic tensile tests were conducted on tread and sidewall compounds at six strain levels ranging from 10% to 100%, eight strain rates from 10% to 500% s−1 and 14 rubber temperatures from −30°C to 100°C. The test results showed that a large strain level (e.g. 100%) increased the hysteresis loss of tire rubber compounds considerably. Hysteresis loss of tire rubber compounds increased with a rise of strain rates, and the increasing rates became greater at large strain levels (e.g. 100%). Moreover, a rise of rubber temperatures caused a decrease in hysteresis loss; however, the decrease became less significant when the rubber temperatures were above 10°C. Compared with tread compounds, sidewall compounds showed greater hysteresis loss values and more rapid increases in hysteresis loss with the rising strain rate.

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Critical damage value of AZ31B magnesium alloy with different temperatures and strain rates

Rare Metals ◽

10.1007/s12598-014-0440-y ◽

2015 ◽

Cited By ~ 2

Author(s):

Jing-Ren Dong ◽

Ding-Fei Zhang ◽

Yu-Feng Dong ◽

Fu-Sheng Pan ◽

Sen-Sen Chai

Keyword(s):

Magnesium Alloy ◽

Strain Rates ◽

Az31b Magnesium Alloy ◽

Different Temperatures ◽

Critical Damage

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Simulation of large-strain behaviour of aluminium alloy under tensile loading using anisotropic plasticity models

Computers & Structures ◽

10.1016/j.compstruc.2015.05.016 ◽

2015 ◽

Vol 157 ◽

pp. 60-75 ◽

Cited By ~ 13

Author(s):

M. Khadyko ◽

S. Dumoulin ◽

T. Børvik ◽

O.S. Hopperstad

Keyword(s):

Aluminium Alloy ◽

Large Strain ◽

Tensile Loading ◽

Anisotropic Plasticity ◽

Strain Behaviour

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Dynamic Deformation Behavior of As-Extruded Mg-Gd-Y Magnesium Alloy and the Microstructural Evolution

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.284-286.1579 ◽

2011 ◽

Vol 284-286 ◽

pp. 1579-1583

Author(s):

Ping Li Mao ◽

Zheng Liu ◽

Chang Yi Wang ◽

Feng Wang

Keyword(s):

Magnesium Alloy ◽

Strain Rate ◽

Deformation Behavior ◽

High Strain ◽

Split Hopkinson Pressure Bar ◽

Dynamic Deformation ◽

Strain Rates ◽

Compression Axis ◽

Deformation Localization ◽

Dynamic Deformation Behavior

The dynamic deformation behavior of an as-extruded Mg-Gd-Y magnesium alloy was studied by using Split Hopkinson Pressure Bar (SHPB) apparatus under high strain rates of 102 s-1 to 103s-1 in the present work, in the mean while the microstructure evolution after deformation were inspected by OM and SEM. The results demonstrated that the material is not sensitive to the strain rate and with increasing the strain rate the yield stress of as-extruded Mg-Gd-Y magnesium alloy has a tendency of increasing. The microstructure observation results shown that several deformation localization areas with the width of 10mm formed in the strain rates of 465s-1 and 2140s-1 along the compression axis respectively, and the grain boundaries within the deformation localization area are parallel with each other and are perpendicular to the compression axis. While increasing the strain rate to 3767s-1 the deformation seems become uniform and all the grains are compressed flat in somewhat. The deformation mechanism of as-extruded Mg-Gd-Y magnesium alloy under high strain rate at room temperature was also discussed.

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