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首页> 外文期刊>Materials Science and Engineering >Mechanical bonding properties and interfacial morphologies of austenitic stainless steel clad plates
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Mechanical bonding properties and interfacial morphologies of austenitic stainless steel clad plates

机译：奥氏体不锈钢复合板的机械结合性能和界面形态

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摘要

The current paper focuses on the correlation between microstructure and mechanical properties in low-carbon steel/austenitic stainless steel clad composite fabricated by hot-roll bonding. For this reason, the morphology and interfacial characteristics, tensile properties shear strength and fracture toughness of the cladded material were evaluated. From the main results, it was found that carbon element diffusion caused the forming of a decarburized ferrite zone (DFZ) of the parent metal and a carburized austenite zone (CAZ) of the clad layer, and between these two area, a thin diffusion layer with rapid element component change are formed in the hot-roll cladding process. Stress-strain curves obtained from tensile testing of parent metal and clad layer can predict the bi-material tensile behavior. The shear test proved that the stainless steel clad plate presents an acceptable shear bond strength at the interface joint. Impact test toughness results confirm that fracture took place only in the parent metal side of cladded specimens; the clad layer was bent but without obvious fracture. Fractography was carried out using scanning electron microscope in the tensile, shear bond test specimens and Charpy impact ones. It reveals the presence of predominantly dimpled fracture. Charpy impact specimens of the interface failed in mixed mode while impact specimens of the base plate failed in ductile mode.
机译：本文着重研究了通过热轧粘结制备的低碳钢/奥氏体不锈钢复合材料的组织与力学性能之间的关系。因此，评价了包覆材料的形貌和界面特性，拉伸性能，剪切强度和断裂韧性。从主要结果发现，碳元素的扩散导致母体金属的脱碳铁素体区（DFZ）和覆层的渗碳奥氏体区（CAZ）的形成，并且在这两个区域之间形成了薄的扩散层。在热轧熔覆过程中形成元素成分变化快的材料。从母体金属和覆层的拉伸试验获得的应力-应变曲线可以预测双材料的拉伸行为。剪切试验证明，不锈钢复合板在界面处具有可接受的剪切粘结强度。冲击试验韧性结果证实，断裂仅发生在覆层试样的母体金属侧。覆层弯曲但无明显断裂。使用扫描电子显微镜在拉伸，剪切粘结测试样品和夏比冲击测试样品上进行分形术。它显示出主要为凹陷的骨折。界面的夏比冲击试样在混合模式下失效，而基板的冲击试样在延性模式下失效。

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  • 来源
    《Materials Science and Engineering》 |2017年第1期|374-386|共13页
  • 作者

    Zina Dhib; Noamen Guermazi; Ahmed Ktari; Monique Gasperini; Nader Haddar;

  • 作者单位

    Laboratoire Genie des Materiaux et Environnement (LGME), Ecole Nationale dlnginieurs de Sfax (ENIS), Universite de Sfax, BP 1173-3038 Sfax, Tunisia;

    Laboratoire Genie des Materiaux et Environnement (LGME), Ecole Nationale dlnginieurs de Sfax (ENIS), Universite de Sfax, BP 1173-3038 Sfax, Tunisia,Institut Superieur des Sciences Appliquees et de Technolgie de Kasserine, Universite de Katrouan, BP 471-1200 Kasserine, Tunlsie;

    Laboratoire Genie des Materiaux et Environnement (LGME), Ecole Nationale dlnginieurs de Sfax (ENIS), Universite de Sfax, BP 1173-3038 Sfax, Tunisia;

    Universite Paris 13, Sorbonne Paris Cite, Laboratoire des Sciences des Procedes et des Materiaux (LSPM), CNRS(UPR3407), 99 av. J.B. CUment, F-93430 Vilktaneuse,France;

    Laboratoire Genie des Materiaux et Environnement (LGME), Ecole Nationale dlnginieurs de Sfax (ENIS), Universite de Sfax, BP 1173-3038 Sfax, Tunisia;

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  • 正文语种 eng
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  • 关键词

    Stainless steel clad plate; Carbon diffusion; Diffusion layer; Tensile shear test; Charpy impact test; Fracture mode;

    机译：不锈钢复合板;碳扩散扩散层;拉伸剪切试验;夏比冲击试验;断裂模式;

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