Cooling rate effect on Young's modulus and hardness of a Zr-based metallic glass

Liu, Z. Y.; Yang, Yong; Guo, Sheng; Liu, X. J.; J, Lu; Liu, Y. H.; Liu, C. T.

doi:10.1016/j.jallcom.2010.12.095

Cited by 37 publications

(10 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the red dotted line shows the volume fraction of particle bandings (ϕ 0 +ϕ w ) increases with increasing pulling speeds, which also implies the particle packing density ϕ p in the particle bandings decreases with increasing pulling speeds according to Eq.(2). This speed-dependent particle packing density can be explained by the speed-dependent entropic ordering of particles [1,[18][19][20] and also confirmed by other independent experiments of mono-layer particles in Fig found that the atomic packing density will decrease as the freezing speed increases [21,22]. And particles are usually seen as big atoms [18].…”

Section: Speed-dependent Ice Bandingssupporting

confidence: 67%

Speed-dependent ice bandings in freezing colloidal suspensions

You

Wang

et al. 2018

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Formation mechanism of speed-dependent ice bandings in freezing colloidal suspensions, of significance in frost heaving and materials science, remains a mystery. With quantitative experiments, we propose a possible mechanism of speed-dependent ice bandings by focusing on the particle packing density and dynamic interface undercooling. The particle packing density ahead of the freezing interface decreases with increasing pulling speeds, attributed to the speed-dependent packing of particles. Through affecting the curvature undercooling of pore ices, the speed-dependent packing of particles can be used to explain speed-dependent thicknesses of ice bandings. The dynamic interface undercooling was obtained to explore curvature undercooling of pore ices and quantitative details of transient interface positions, speeds and undercooling were given. All the evidences imply that the speed-dependent particle packing and dynamic interface undercooling are responsible for speed-dependent ice bandings. (Xin Lin) 2 / 16 direction of the thermal gradient. These perpendicular segregated patterns are of great importance due to their effects on the dynamics of frost heaving [10-12] and mechanical properties of freeze casting porous materials [3,13].Recently, Anderson et al.[9] discovered pulling-speed-dependent ice bandings

show abstract

Section: Speed-dependent Ice Bandingssupporting

confidence: 67%

Speed-dependent ice bandings in freezing colloidal suspensions

You

Wang

et al. 2018

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

show abstract

“…These advantages offer great potential for applications of MGs [1,2]. Notably, Zr-rich alloys are important MGs due to their strong glass forming ability [3] and outstanding mechanical properties, such as high Young's modulus [4], fracture toughness [5] and elasticity [6]. The superconducting properties of the Zr-Rh system was proposed in 1955, and has subsequently attracted widespread interest [7].…”

Section: Introductionmentioning

confidence: 99%

Bergman-type medium range order in amorphous Zr77Rh23 alloy studied by ab initio molecular dynamics simulations

Guo

Qiao

Wang

et al. 2019

Journal of Alloys and Compounds

View full text Add to dashboard Cite

In recent years, some arguments about the existence of medium-range order (MRO) in the Zr-Rh system have been put forward. However, research on the structural features of the Zr-Rh binary alloy at the atomic level is still lacking. This study uses ab initio molecular dynamics simulations to systematically study the local structures of Zr77Rh23 from the liquid to the glassy states. Pair correlation function (PCF), coordination number (CN), Honeycutt-Anderson(HA) index, bond-angle distribution functions, and the Voronoi tessellation method are used to reveal a clear icosahedral-like configuration in the amorphous Zr77Rh23 alloy. It is noteworthy that the splitting in the second peak of the partial PDF implies the existence of a medium range order (MRO) in the Zr77Rh23 system. We obtain the local order in three-dimensional atomic density distributions by using a new atomistic cluster alignment (ACA) method. Interestingly, a Bergman-type MRO is observed in the glassy Zr77Rh23. Furthermore, the spatial distribution and connections of icosahedral-like clusters are shown to further demonstrate the MRO network. Our findings shed light on the nature of atomic local structures of amorphous Zr77Rh23 alloy and have important implications to understanding the formation of various MROs in metallic glasses.

show abstract

“…Note that one thermal effect on 879 • C, which corresponds to the invariant reaction L ↔ (Cu) + Cu 6 Ce, has been detected for samples 4, 5 ( Fig. 2c and d) and 6.…”

Section: Resultsmentioning

confidence: 93%

“…The bulk metallic glasses (BMGs) have attracted much attention due to the unique properties and potential applications as functional materials [1][2][3][4][5][6][7][8][9]. The Ce-Cu system is one of the sub-systems of the Ce-based bulk metallic glasses with an exceptionally low glass transition temperature [4,10].…”

Section: Introductionmentioning

confidence: 99%