图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
国际能源材料和化学驱动期刊
ESCI SJR: 0.28 SNIP: 0.421 CiteScore™: 0.9

ISSN 打印: 2150-766X
ISSN 在线: 2150-7678

国际能源材料和化学驱动期刊

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v8.i6.80
pages 571-593

HMX POLYMORPHISM: VIRTUAL MELTING GROWTH MECHANISM, CLUSTER-TO-CLUSTER NUCLEATION MECHANISM AND PHYSICALLY BASED KINETICS

Valery I. Levitas
Iowa State University, Departments of Mechanical Engineering, Aerospace Engineering, and Material Science and Engineering, Ames, Iowa 50011 USA
Laura B. Smilowitz
Los Alamos National Laboratory, Los Alamos, NM 87545, USA
Bryan F. Henson
Los Alamos National Laboratory, Los Alamos, NM 87545, USA
Blaine W. Asay
Los Alamos National Laboratory, Los Alamos, NM 87545, USA

ABSTRACT

A fully physically-based thermodynamic and kinetic model of the β ↵ δ phase transformation in energetic crystal HMX crystal embedded in polymeric binder is developed. It is based on a new nucleation mechanism via melt mediated nano-cluster transformation and the recently formulated growth mechanism via internal stress-induced virtual melting. During the nucleation, nano-sized clusters of β phase dissolve in a molten binder and transform diffusionally into δ phase clusters. During the interface propagation, internal stresses induced by transformation strain cause the melting of the stressed δ phase much below (120K) the melting temperature and its immediate resolidification into the unstressed δ phase. These mechanisms explain numerous puzzles of HMX polymorphism and result in local and overall transformation kinetics that are in good agreement with experiments.


Articles with similar content:

Effect of extreme environmental temperature on the fracture resistance, and fatigue behavior of dual phase Ti-6Al-4V alloy
5th Thermal and Fluids Engineering Conference (TFEC), Vol.1, 2020, issue
Heshmat Aglan, F. Moon, Md Imdadul Islam
NANOSTRUCTURAL PREDICTION OF SHAPE MEMORY ALLOYS RESISTANCE ASYMMETRY
Nanoscience and Technology: An International Journal, Vol.10, 2019, issue 3
Andrey A. Movchan, Ilya V. Mishustin
DEVELOPMENT OF AN AXIAL GROOVED HEAT PIPE WITH LOWCOEFFICIENT OF THERMAL EXPANSION
Heat Pipe Science and Technology, An International Journal, Vol.1, 2010, issue 2
Reinhard Schlitt, Frank Bodendieck, Christoph Hoffmeister
AN EXPERIMENTAL INVESTIGATION OF TWO-PHASE FLOW INTERACTIONS IN HORIZONTAL ROD BUNDLE GEOMETRIES
International Heat Transfer Conference 7, Vol.12, 1982, issue
M. S. M. Shoukri, W. I. Midvidy, H. Tawfik
STOCHASTIC PROCESSES OF {1012} DEFORMATION TWINNING IN HEXAGONAL CLOSE-PACKED POLYCRYSTALLINE ZIRCONIUM AND MAGNESIUM
International Journal for Multiscale Computational Engineering, Vol.9, 2011, issue 4
Irene J. Beyerlein, R. J. McCabe, C. N. Tome