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Brittle-to-ductile transition in high temperature pre-stretched polycarbonate

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Abstract

The brittle-to-ductile transition is investigated in polycarbonate (PC) after different types of thermomechanical treatment. In addition to the stress versus strain curves in uniaxial stretching to fracture of the original, preheated, shape recovered and high temperature pre-stretched samples, photoelasticity is applied to reveal the internal stress field in the fracture samples and high temperature pre-stretched samples. The change in microstructure after pre-deformation is concluded to be the reason behind the brittle-to-ductile transition. However, the type of subsequent loading to fracture is also important to determine if there is any transition. The magnitude of pre-deformation, the temperature of pre-deformation and the maximum deformation capability of the original material are three major parameters that affect the significance of brittle-to-ductile transition.

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Authors and Affiliations

  1. School of Mechanical Engineering, Jiangsu University, 301 Xuefu Road, 212013, Zhenjiang, China

    Xuelian Wu

  2. Jiangsu Key Laboratory of Advanced Structural Materials & Application Technology, School of Material Science and Engineering, Nanjing Institute of Technology, 211167, Nanjing, China

    Changchun Wang

  3. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore

    Jia Xi Pek & Wei Min Huang

Authors
  1. Xuelian Wu
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  2. Changchun Wang
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  3. Jia Xi Pek
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  4. Wei Min Huang
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Correspondence to Wei Min Huang.

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Wu, X., Wang, C., Pek, J.X. et al. Brittle-to-ductile transition in high temperature pre-stretched polycarbonate. J Polym Res 29, 435 (2022). https://doi.org/10.1007/s10965-022-03282-1

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  • DOI: https://doi.org/10.1007/s10965-022-03282-1

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