Dynamic probing of structural evolution for Co50Ni50 metallic glass during pressurized cooling using atomistic simulation

Deshmukh, A. A.; Pal, Snehanshu

doi:10.1007/s00894-020-04468-4

“…Some VPs, including < 0,3,6,4 > , < 0,3,6,5 > , and < 0,3,6,6 > , exhibit a trend of increasing firstly and then decreasing with the decreasing temperature. These are predominating VPs in face-centered cubic (FCC) crystals, [62][63] suggesting undercooled liquid Nb 82.7 Si 17.3 alloy inhibits the formation of FCC-like structures.…”

Section: Methodsmentioning

confidence: 99%

Metastable Liquid Properties and Surface Flow Patterns of Ultrahigh Temperature Alloys Explored in Outer Space

Wang,

Hu,

Xie

et al. 2024

Angewandte Chemie

1

0

View full text Add to dashboard Cite

The metastable liquid properties and chemical bonds beyond 2000 K remain a huge challenge for ground‐based research on liquid materials chemistry. We show the strong undercooling capability, metastable liquid properties and surface wave patterns of refractory Nb‐Si and Zr‐V binary alloys explored in space environment. The floating droplet of Nb82.7Si17.3 eutectic alloy superheated up to 2388 K exhibited an extreme undercooling of 437 K, approaching the 0.2TE threshold for homogenous nucleation of liquid‐solid reaction. The microgravity state endowed alloy droplets with nearly perfect sphericity and thus ensured the high accuracy to determine metastable undercooled liquid properties. A special kind of swirling flow was induced for liquid alloy owing to Marangoni convection, which resulted in the spiral microstructures on Zr64V36 alloy surface during liquid‐solid phase transition. The coupled impacts of surface nucleation and surface flow brought in a novel olivary shape for these binary alloys. Furthermore, the chemical bonds and atomic structures of high temperature liquids were revealed to understand the liquid properties in outer space circumstances.

show abstract

Metastable Liquid Properties and Surface Flow Patterns of Ultrahigh Temperature Alloys Explored in Outer Space

Wang,

Hu,

Xie

et al. 2024

View full text Add to dashboard Cite

The metastable liquid properties and chemical bonds beyond 2000 K remain a huge challenge for ground‐based research on liquid materials chemistry. We show the strong undercooling capability, metastable liquid properties and surface wave patterns of refractory Nb‐Si and Zr‐V binary alloys explored in space environment. The floating droplet of Nb82.7Si17.3 eutectic alloy superheated up to 2388 K exhibited an extreme undercooling of 437 K, approaching the 0.2TE threshold for homogenous nucleation of liquid‐solid reaction. The microgravity state endowed alloy droplets with nearly perfect sphericity and thus ensured the high accuracy to determine metastable undercooled liquid properties. A special kind of swirling flow was induced for liquid alloy owing to Marangoni convection, which resulted in the spiral microstructures on Zr64V36 alloy surface during liquid‐solid phase transition. The coupled impacts of surface nucleation and surface flow brought in a novel olivary shape for these binary alloys. Furthermore, the chemical bonds and atomic structures of high temperature liquids were revealed to understand the liquid properties in outer space circumstances.

show abstract

Modelling of thermal behaviour in niobium during electron beam welding

Jain,

Das,

Chaudhuri

et al. 2023

Materials Today Communications

2

0

View full text Add to dashboard Cite

Dynamic probing of structural evolution for Co50Ni50 metallic glass during pressurized cooling using atomistic simulation

Cited by 5 publications

References 84 publications

Metastable Liquid Properties and Surface Flow Patterns of Ultrahigh Temperature Alloys Explored in Outer Space

Metastable Liquid Properties and Surface Flow Patterns of Ultrahigh Temperature Alloys Explored in Outer Space

Metastable Liquid Properties and Surface Flow Patterns of Ultrahigh Temperature Alloys Explored in Outer Space

Modelling of thermal behaviour in niobium during electron beam welding

Contact Info

Product

Resources

About