Characterization of adiabatic shear bands in the zirconium alloy impacted by split Hopkinson pressure bar at a strain rate of 6000s−1

Zou, Dongli; Luan, Baifeng; Liu, Q.; Chai, Linjiang; Chen, J.W.

doi:10.1016/j.msea.2012.08.038

Cited by 26 publications

(8 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Samples for microstructure observation were polished by abrasive papers to 1600 grit, then to 1 µm using a diamond suspension, detached by using a solution of HF [6][7][8][9][10]. The experimental device is mainly composed of the loading device, some of the bars and the data acquisition system [11,12].…”

Section: Methodsmentioning

confidence: 99%

Effect of Nb Additive on the Dynamic Compression Property of a Zr-Ta Alloy

Han

Wang

et al. 2019

Teh. vjesn.

View full text Add to dashboard Cite

In this paper, Ta50-Zr50 and Ta45-Zr45-Nb10 alloys were compounded by casting. Quasi-static and dynamic compression tests were applied for both alloys, and also the role of Nb additive on the mechanical property of Zr-Ta alloy, was studied. The microstructure characterization demonstrated that both alloys had relative homogeneous structure with micro-laminate structure inside grains. The Nb additives increased the strength of the alloy by various strain rates, while the ductility of the alloys was decreased. The various parameters of constitutive equations for both alloys were obtained by fitting data. The constitutive equations are applied in theoretical models, the simulation software helps to predict the strength of alloy through various strain rates.

show abstract

Section: Methodsmentioning

confidence: 99%

Effect of Nb Additive on the Dynamic Compression Property of a Zr-Ta Alloy

Han

Wang

et al. 2019

Teh. vjesn.

View full text Add to dashboard Cite

show abstract

“…In the service environment of these fields, magnesium alloy components including car doors and aircraft shells, often face high-speed impact, and the impact strain rate can even reach more than 10 4 s −1 [6][7][8]. The plastic deformation behavior and mechanical properties of magnesium alloy under high speed impact are more complicated than those under static load [9][10][11][12]. It is no longer just a dislocation glide deformation mode.…”

Section: Introductionmentioning

confidence: 99%

Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy

Wang

Yuan

Jin

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

An accurate prediction of high speed impact behavior of metals by considering the combined effects of strain, strain rate and temperature is essential for understanding dynamic impact deformation of metals. To understand the effect of strain, strain rate and temperature on the high-speed impact behavior of Mg-1Al-4Y alloy, the dynamic impact compression experiments for Mg-1Al-4Y alloy were carried out by split Hopkinson pressure bar (SHPB). The mechanical properties of Mg-1Al-4Y alloy specimens were studied at different strain rate and temperature. The number of {10-12} extension twins decreases with the strain rate increasing from the electron backscatter diffraction (EBSD) technology, because of the formation of extension twins is suppressed with the strain rate increases, and dislocations become the main mode of dominant deformation. It is also found that the increase of strain rate has a positive effect on the strength of the material. But, the temperatures have a negative impact on the strength of the material. A modified Johnson-cook model has been presented, which shows good predictions with experimental results at different strain rates and temperatures. Especially, the predictions of the Johnson-cook equation are completely consistent with experimental results in small deformation stage.

show abstract

“…However, only several references about microstructural characteristics of ASBs in zirconium alloy have been reported in recent years. The ultrafine and equiaxed grains in the ASBs characterized by electron backscatter diffraction (EBSD) have been reported by us [4,5], and beside the ultrafine and equiaxed grains, other microsstructural characteristics in TBs were not detected due to the spatial resolution limit of EBSD technology. Wang et al [6,7] investigated the microstructural characteristics of ASBs in zirconium alloy under dynamic deformation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic deformation evolution of the adiabatic shear bands in zirconium alloy formed at a strain rate of about 2300 s^-1

et al. 2018

View full text Add to dashboard Cite

Deformed microstructure of the adiabatic shear bands in zirconium alloy impacted by split Hopkinson pressure bar at a strain rate of about 2300 s-1 was characterized systemically. Four different strains of zirconium alloy subjected to impact loading at same strain rate were designed by means of strain stopper rings. At a strain of 0.30, the transformed bands were distinguished at the tip of crack. The transformed bands mainly composed of the ultrafine and equiaxed grains with the mean diameter of about 100~300 nm were found by a dual beam FIB/TEM system. Besides ultrafine grains in the transformed bands, nanometer fine grain was observed and confirmed by HRTEM. Thus, the transformed bands mainly composed of the mixed microstructure including nanometer and ultrafine grains were confirmed, and n phase transformation and amorphization in transformed bands take place.

show abstract

Characterization of adiabatic shear bands in the zirconium alloy impacted by split Hopkinson pressure bar at a strain rate of 6000s−1

Cited by 26 publications

References 50 publications

Effect of Nb Additive on the Dynamic Compression Property of a Zr-Ta Alloy

Effect of Nb Additive on the Dynamic Compression Property of a Zr-Ta Alloy

Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy

Dynamic deformation evolution of the adiabatic shear bands in zirconium alloy formed at a strain rate of about 2300 s^-1

Contact Info

Product

Resources

About

Characterization of adiabatic shear bands in the zirconium alloy impacted by split Hopkinson pressure bar at a strain rate of 6000s−1

Cited by 26 publications

References 50 publications

Effect of Nb Additive on the Dynamic Compression Property of a Zr-Ta Alloy

Effect of Nb Additive on the Dynamic Compression Property of a Zr-Ta Alloy

Study on modified Johnson-Cook constitutive material model to predict the dynamic behavior Mg-1Al-4Y alloy

Dynamic deformation evolution of the adiabatic shear bands in zirconium alloy formed at a strain rate of about 2300 s-1

Contact Info

Product

Resources

About

Dynamic deformation evolution of the adiabatic shear bands in zirconium alloy formed at a strain rate of about 2300 s^-1