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Influence of hot rolling on the deformation behavior of particle reinforced aluminum metal matrix composite

机译：热轧对颗粒增强铝金属基复合材料变形行为的影响

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摘要

This paper presents the development of a microstructure based finite element model to predict the effective mechanical response and study the failure mechanisms of a paniculate metal matrix composite (MMC) which explicitly accounts for changes in microstructure due to thermo-mechanical processing from the as-cast to rolled states. Experimental testing including macro-scale tension, in-situ SEM micro-scale tension, and nano-indentation were used to characterize the deformation behavior and active failure mechanisms. It was found that the damage mechanism transitions from being dominated by void nucleation and growth in the matrix in the as-cast state to interfacial decohesion and particle fracture in the rolled material. The numerical model is used to quantify the contribution of interfacial decohesion and particle fracture damage mechanisms to the local and global continuum response of a hot rolled A359/pSiC MMC.
机译：本文介绍了基于微观结构的有限元模型的开发，以预测有效的机械响应并研究颗粒状金属基复合材料（MMC）的失效机理，该模型明确考虑了铸态热机械加工导致的微观结构变化到滚动状态。实验测试包括宏观尺度张力，原位SEM微观尺度张力和纳米压痕，以表征变形行为和主动破坏机制。已经发现，破坏机理从以空态成核和铸态状态下的基体生长为主转变为轧制材料中的界面脱粘和颗粒破裂。该数值模型用于量化界面脱粘和颗粒断裂损伤机制对热轧A359 / pSiC MMC局部和全局连续响应的贡献。

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  • 来源
    《Materials Science and Engineering》 |2013年第10期|54-63|共10页
  • 作者

    B. McWilliams; T. Sano; J. Yu; A. Gordon; C. Yen;

  • 作者单位

    US Army Research Laboratory, Weapons and Materials Research Directorate, Aberdeen Proving Ground, MD 20015, USA;

    US Army Research Laboratory, Weapons and Materials Research Directorate, Aberdeen Proving Ground, MD 20015, USA;

    US Army Research Laboratory, Weapons and Materials Research Directorate, Aberdeen Proving Ground, MD 20015, USA;

    University of Central Florida, Department of Mechanical, Materials, and Aerospace Engineering, Orlando, FL 32816, USA;

    US Army Research Laboratory, Weapons and Materials Research Directorate, Aberdeen Proving Ground, MD 20015, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composites; Thermomechanical processing; Finite element method; Micromechanics;

    机译：复合材料;热机械加工;有限元法;微力学;

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