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<p>In this paper, we model the delamination of a brittle elastic material from a shape memory alloy substrate. We use a recently developed particle-based model to study the role of phase transformations and microstructure evolution in the substrate material on the crack path. We study two cases in which the substrate layer is in the austenite phase and in twinned martensite phase. We find that the stresses at the crack tip affect the formation and distribution of the twin boundaries in the substrate layer in both cases. The role of the elastic modulus of the top layer is also found to have a significant effect on the crack path.</p>

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Modelling Delamination of Elastic Layers from Shape Memory Alloy Substrates

  • 期刊论文

  • 发表日期：

    2025年1月9日

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  • Venkatesh Ananchaperumal,
  • Srikanth Vedantam,
  • Mahendaran Uchimali

摘要

In this paper, we model the delamination of a brittle elastic material from a shape memory alloy substrate. We use a recently developed particle-based model to study the role of phase transformations and microstructure evolution in the substrate material on the crack path. We study two cases in which the substrate layer is in the austenite phase and in twinned martensite phase. We find that the stresses at the crack tip affect the formation and distribution of the twin boundaries in the substrate layer in both cases. The role of the elastic modulus of the top layer is also found to have a significant effect on the crack path.