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极端条件下非晶态材料及结构的力学行为
  • 项目名称：极端条件下非晶态材料及结构的力学行为
  • 项目类别：重点项目
  • 批准号：10732010
  • 申请代码：A020602
  • 项目来源：国家自然科学基金
  • 研究期限：2008-01-01-2011-12-31
  • 项目负责人：刘凯欣
  • 负责人职称：教授
  • 依托单位：北京大学
  • 批准年度：2007
中文摘要：

本项目采用理论分析、实验和数值计算相结合的方法研究极端条件下非晶合金材料及结构的力学行为。采用新型SHPB实验系统结合气炮、电炮、激光驱动飞片等动态加载装置和VISAR、位移干涉等精密测试技术，获取典型非晶合金材料在不同应变率和温度、高速冲击载荷下所伴生的高压、高应变率和高温等复杂极端条件下的力学特性。通过总结典型非晶态合金在冲击载荷作用下变形、相变、损伤及破坏的机理和规律,并通过观察其细观组织演变研究剪切带的演化与上述宏观特性描述之间的关系。在此基础上，归纳其本构方程、状态方程和损伤/破坏准则，进而构建能反映剪切带增殖等细观力学机制的流体弹塑性模型。开发可以局部加密网格并可处理有材料内部裂纹形成和扩展的CE/SE方法、以及能够模拟冲击载荷作用下块体非晶合金及其结构的力学行为的具有自主知识产权的专用软件，并对其有效性进行评估和验证。探索改善和控制非晶合金在极端条件下力学性能的力学途径。

中文主题词： 块体非晶合金；极端条件；动力学行为；流体弹塑性；性能优化
成果综合统计
成果类型
数量
  • 期刊论文
  • 会议论文
  • 专利
  • 获奖
  • 著作
  • 71
  • 9
  • 0
  • 2
  • 0
期刊论文
二级电炮加载技术研究
冲击加载下Zr51Ti5Ni10Cu25Al9金属玻璃的塑性行为
Deformation behaviors of a TiZrNiCuBe bulk metallic glass under shock loading.
High temperature deformation behaviors of Ti40Zr25Ni3Cu12Be20 bulk metallic glass
Mechanical performance of metallic glasses during nanoscratch tests.
Shock compression response of a Zr-based bulk metallic glass up to 110 GPa
Indentation Creep of an Fe-based Bulk Metallic Glass,
Indentation Creep of a Ti-based Metallic Glass,
Thermodynamic Characteristics of Ti-based Glass-Forming Alloys,
铝-金属玻璃-铝复合板的抗破甲性能研究
地下防护结构在冲击载荷作用下的动态破坏过程
动高压加载下锆基金属玻璃强度测量
In situ TEM observations of unusual nanocrystallization in a Ti-based bulk metallic glass.
New numerical algorithms in SUPER CE/SE and their applications in explosion mechanics SUPER CE/SE的新
Inhomogeneous Structure and Glass-Forming Ability in Zr-Based Bulk Metallic Glasses
Cooling rate effect of nanomechanical response for a Ti-based bulk metallic glass.
Dynamic Buckling of Double-Walled Carbon Nanotubes under Step Axial Load
Influence of strain-rate on compressive-deformation behavior of a Zr–Cu–Ni–Al bulk metallic glass at
New Zr-Cu-Ni-Al Bulk Metallic Glasses With Superhigh Glass-Forming Ability
Atomic Structure and Diffusion in Cu60Zr40 Metallic Liquid and Glass: Molecular Dynamics Simulations
Dynamic Column Buckling of Multi-Walled Carbon Nanotubes under Axial Impact Load
Mechanical behavior of a Zr-based metallic glass at elevated temperature under high strain rate
Improved CE/SE scheme with particle level set method for numerical simulation of spall fracture due
Inhomogeneous structure and glass-forming ability in Zr-based bulk metallic glasses.
Indentation size effect of hardness of metallic glasses
Temperature influence on sintering with concurrent crystallization behavior in Ti-based metallic gla
Compressive fracture characteristics of Ni42Cu5Ti19Zr22.5Al8Si3.5 bulk metallic glass
Enhanced strength and plasticity of a Ti-based metallic glass at cryogenic temperatures
Metastable nanocrystallization behavior of Ti-based metallic glassy powders during post-heating
An Improved CE/SE Scheme for Multi-Material Elastic-Plastic Flows and its Applications
New Discrete Element Models for 3-D Impact Problems
Metallic glass coating on metals plate by adjusted explosive welding technique
Mechanical Property of a New Zr-based Bulk Metallic Glass with Certain Plasticity at Low Temperature
Tuning the mechanical performance of a Ti-based bulk metallic glass by pre-deformation.
New Discrete Element Models for Elastoplastic Problems
Influence of Strain Rate on Compressive Deformation Behavior of a Zr-Cu-Ni-Al Bulk Metallic Glass at
Hypervelocity impact on Zr51Ti5Ni10Cu25Al9 bulk metallic glass.
On the Atomic Anisotropy of Thermal Expansion in Bulk Metallic Glass.
Dynamic behavior of a Zr-based metallic glass at cryogenic temperature
Experimental research on dynamic mechanical properties of PZT ceramic under hydrostatic pressure, Ma
A Void Growth Model Considering the Bauschinger Effect and Its Application to Spall Fracture
Micro-nano scale ripples on metallic glass induced by laser pulse
Three-dimensional simulation of detonation propagation in a rectangular duct by an improved CE/SE sc
Shear stability of metallic glasses.
A high-resolution Eulerian method for numerical simulation of shaped charge jet including solid–flui
New Approaches to the Computer Simulation of Amorphous Alloys: A Review
时—空守恒元解元(CE/SE)方法综述
预压载荷下Zr51Ti5Ni10Cu25Al9块体非晶合金快速加热时的变形与破坏
An Improved CE/SE Scheme for Numerical Simulation of Gaseous and Two-Phase Detonations
Numerical Study on Critical Wedge Angle of Cellular Detonation Reflections
The failure stress of bulk metallic glasses under very high strain rate
Dynamic torsional buckling of multi-walled carbon nanotubes embedded in an elastic medium
时一空守恒元解元（CE／SE）方法综述
Tuning of band-gap of phononic crystals with initial confining pressure
高速冲击问题的离散元法数值模拟
预压下锆基块体非晶合金的热冲击变形与破坏
纳秒脉冲激光辐照金属玻璃表面结构形成机制
会议论文
Nanoindentation creep of a Fe-based bulk metallic glass
The effect of cooling rate on microstructure and mechanical properties of Zr-based bulk metallic gla
Powder metallurgy processed bulk metallic glasses based on Ti
Glass forming ability and mechanical behaviors of Zr-based bulk metallic glasses
Modeling of Nonlinear Behaviors of Continua Including Elastoplastic Deformations and Severe Damages
Glass-forming ability and properties of ZrCuNiAl alloys
Dynamic process of ring systems as energy absorber subjected to lateral end impact
High temperature deformation behaviors of Ti40Zr25Ni3Cu12Be20 bulk metallic glass
A New Combined Scheme of Discrete Element Method and Meshless Method for Numerical Simulation of Imp
获奖
大块非晶合金制备过程的基础科学问题研究
大块非晶合金制备过程的基础科学问题研究
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刘凯欣的项目
冲击动力学
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时—空守恒元算法及其软件的开发与应用
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