TP2: Thermomechanical characterization and microstructural analysis of the interaction of shear bands with elements of the microstructure

TP2:剪切带与微观结构元素相互作用的热机械表征和微观结构分析

基本信息

项目摘要

Adiabatic shear band formation occurs as a deformation process in metallic materials particularly at high deformation rates. Shear band formation is characterized by energy dissipation during plastic deformation, which is associated with a local temperature increase that leads to local softening and, finally, to an increasingly pronounced localization of the subsequent deformation. A detailed understanding of shear band formation is interesting from the point of view of materials science, experimentally challenging and also highly relevant from a technological point of view, especially in the context of high-speed blanking. A key objective of this research project is to investigate the influence of different initial microstructures on the formation and growth of different types of shear bands in unalloyed and low-alloyed steels, respectively, as well as in a non age-hardenable aluminum alloy. The project furthermore aims at developing criteria for the evaluation of the shear tendency of the investigated materials during high-speed blanking, with a special focus on strain rate sensitivity, strength and thermal conductivity of the materials. In particular, the aim is to understand the relationships between the initial microstructures and the resulting shear band properties. The focus is not only on the macroscopic investigation of the mechanical behavior but also on the microstructural and micromechanical characterization of shear bands, with additional consideration of the influence of different stress states. Moreover, the cutting surfaces produced by high-speed blanking will be systematically characterized, and conditions for tailoring well-defined surface properties will be identified. Consequently, a significant contribution will be made to the central research goals of the Research Unit by the development of a clear understanding of the relevant microstructural mechanisms – from the initiation of an adiabatic shear band, via its growth and interaction with microstructural features, to the functional surface generated during high-speed blanking.
绝热剪切带的形成是金属材料的一个变形过程,特别是在高变形速率下。剪切带形成的特征在于塑性变形期间的能量耗散,这与导致局部软化的局部温度升高以及最终导致后续变形的日益明显的局部化相关。从材料科学的角度来看,对剪切带形成的详细了解是有趣的,从技术的角度来看,特别是在高速冲裁的背景下,具有实验挑战性和高度相关性。本研究项目的一个关键目标是研究不同的初始微观结构对非合金钢和低合金钢以及非时效硬化铝合金中不同类型剪切带的形成和生长的影响。该项目还旨在制定高速冲裁过程中所研究材料剪切趋势的评估标准,特别关注材料的应变率敏感性、强度和导热性。特别是,其目的是了解初始微观结构和所得剪切带性能之间的关系。重点不仅是宏观的力学行为的调查,但也对剪切带的微观结构和微观力学特性,与不同的应力状态的影响的额外考虑。此外,高速冲裁产生的切削表面将被系统地表征,并将确定定制定义良好的表面特性的条件。因此,一个显着的贡献,将作出研究单位的中心研究目标的发展,明确理解相关的微观结构机制-从绝热剪切带的启动,通过其增长和与微观结构特征的相互作用,在高速冲裁过程中产生的功能表面。

项目成果

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Professor Dr.-Ing. Martin Franz-Xaver Wagner其他文献

Professor Dr.-Ing. Martin Franz-Xaver Wagner的其他文献

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{{ truncateString('Professor Dr.-Ing. Martin Franz-Xaver Wagner', 18)}}的其他基金

Mechanical and microstructural investigations of the biaxial Bauschinger effect in sheet metals
金属板材中双轴鲍辛格效应的机械和微观结构研究
  • 批准号:
    318682861
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Heat treatments, microstructures and properties of TRIP steels without hold time during the Bainite transformation
贝氏体转变过程中无保温时间的 TRIP 钢的热处理、显微组织和性能
  • 批准号:
    281456923
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Local microstructural evolution, interfacial integrity and rate effects associated with modern joining processes using plastic deformation
与使用塑性变形的现代连接工艺相关的局部微观结构演变、界面完整性和速率效应
  • 批准号:
    227758514
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Einfluss der Ausgangsgefüge auf die Werkstoffeigenschaften von Stählen nach dem Minithixoforming
初始组织对微触变成形后钢材材料性能的影响
  • 批准号:
    191272416
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Offene Fragen zur Zwillingsbildung in funktionellen und strukturellen Ingenieurwerkstoffen
关于功能和结构工程材料孪生的开放问题
  • 批准号:
    40116301
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Independent Junior Research Groups
Effect of multi-phase microstructures on rate-dependent shear band formation in the meta-stable beta-titanium alloy Ti-10V-2Fe-3Al
多相微观结构对亚稳β钛合金Ti-10V-2Fe-3Al中速率相关剪切带形成的影响
  • 批准号:
    438934157
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Quantitative analysis of local deformation and direct correlation with microstructural and mechanical parameters during equal channel angular pressing in tools with variable geometries
可变几何形状工具等通道角冲压过程中局部变形的定量分析以及与微观结构和机械参数的直接相关性
  • 批准号:
    465563128
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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职业:精加工表面层的热机械响应和疲劳性能:原位表征和数字工艺孪生
  • 批准号:
    2143806
  • 财政年份:
    2022
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Thermomechanical Characterization of Shape Memory Alloys for Hybrid Composite Structures
混合复合结构形状记忆合金的热机械表征
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    526305-2018
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    2018
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    --
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D1: Characterization and modelling of the thermomechanical material behavior of 3D textilereinforced aluminium matrix composites (3D DF/Al-MMC)
D1:3D 织物增强铝基复合材料 (3D DF/Al-MMC) 热机械材料行为的表征和建模
  • 批准号:
    57157254
  • 财政年份:
    2008
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    --
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Fabrication and Thermomechanical Characterization of NiTi Shape Memory Alloy Nanowires
NiTi 形状记忆合金纳米线的制备和热机械表征
  • 批准号:
    0825435
  • 财政年份:
    2008
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    --
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    Standard Grant
Characterization and modification of chemi-thermomechanical pulp fibres for custom-made pulp properties
用于定制纸浆性能的化学热机械纸浆纤维的表征和改性
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    326205-2005
  • 财政年份:
    2006
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    Collaborative Research and Development Grants
Characterization and modification of chemi-thermomechanical pulp fibres for custom-made pulp properties
用于定制纸浆性能的化学热机械纸浆纤维的表征和改性
  • 批准号:
    326205-2005
  • 财政年份:
    2005
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Carbon-containing refractory materials: thermomechanical and structural characterization
含碳耐火材料:热机械和结构表征
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    3520-2001
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    2004
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Mechanical characterization of textile-reinforced composites under short- and long-term thermomechanical loading (C 01)
短期和长期热机械载荷下纺织增强复合材料的机械表征 (C 01)
  • 批准号:
    5424171
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    2004
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    Collaborative Research Centres
Carbon-containing refractory materials: thermomechanical and structural characterization
含碳耐火材料:热机械和结构表征
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    3520-2001
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