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首页> 外文期刊>Materials Science and Engineering >Numerical analysis of the deformation behavior of 2205 duplex stainless steel TIG weld joint based on the microstructure and micro-mechanical properties
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Numerical analysis of the deformation behavior of 2205 duplex stainless steel TIG weld joint based on the microstructure and micro-mechanical properties

机译：基于微观结构和微机械性能的2205双相不锈钢TIG焊接接头变形行为的数值分析

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摘要

The microstructure-based finite element model is developed to investigate the microscale strain and macroscopic deformation response in different regions of the 2205 duplex stainless steel weld joint produced by tungsten inert gas welding. In this model, the microstructure images are obtained from the electron backscattered diffraction measurement. The strain-stress curves of constituent phases are calculated according to the instrumented indentation test. The microscopic strain distributions of weld metal zone, high-temperature heat affected zone, low-temperature heat affected zone and base metal are analyzed respectively with considering the microstructure morphology, phase proportion and stress-strain curves of the constituent phases. The calculated macroscopic stress-strain curve agrees well with the experimental result in the base metal. It is proved that the location and quantity of strain localization bands are mainly determined by the microstructure morphology. The simulated results show that there are a lot of strain localization bands occur in austenite phase especially in LT-HAZ and base metal. It is found that the high-temperature heat affected zone is strengthened obviously, followed by the weld metal zone.
机译：开发了基于微观结构的有限元模型，以研究通过钨惰性气体焊接生产的2205双相不锈钢焊接接头的不同区域中的微观应变和宏观变形响应。在该模型中，从电子背散射衍射测量获得微结构图像。根据仪表化凹口测试计算成分相的应变曲线。考虑到构成相的微观结构形貌，相比例和应力 - 应变曲线，分别分别分别分析焊接金属区，高温热影响区，低温热影响区和贱金属的微观应变分布。计算出的宏观应力 - 应变曲线与基础金属的实验结果吻合良好。事实证明，应变局部条带的位置和数量主要由微观结构形态决定。模拟结果表明，奥氏体相中存在很多应变局部化带，特别是在LT-HAZ和基础金属中发生。发现高温热影响区域明显加强，其次是焊接金属区。

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  • 来源
    《Materials Science and Engineering》 |2021年第20期|141303.1-141303.14|共14页
  • 作者

    Song Gao; Shaoning Geng; Ping Jiang; Gaoyang Mi; Chu Han; Liangyuan Ren;

  • 作者单位

    The State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science & Technology 430074 Wuhan PR China;

    The State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science & Technology 430074 Wuhan PR China;

    The State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science & Technology 430074 Wuhan PR China;

    School of Materials Science and Engineering Huazhong University of Science & Technology 430074 Wuhan PR China;

    The State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science & Technology 430074 Wuhan PR China;

    The State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science & Technology 430074 Wuhan PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Microstructure-based finite element model; 2205 DSS TIG weld joint; Strain localization band; Plastic strain localization factor;

    机译：基于微观结构的有限元模型;2205 DSS TIG焊接接头;应变局部频段;塑料应变定位因子;

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