• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Investigation of the Nb element segregation for laser additive manufacturing of nickel-based superalloys
【24h】

Investigation of the Nb element segregation for laser additive manufacturing of nickel-based superalloys

机译：镍基超合金激光添加剂制造的Nb元素偏析研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

During additive manufacturing process of alloys, element segregation is vital in determines the solidification structure and mechanical properties of components. In this work, the solute trapping behavior and Nb segregation during laser additive manufacturing of a nickel-based superalloy are studied via a multi-scale model. The temperature evolution of the molten pool is estimated by the macro-scale mass and heat transfer simulation, and the solute dynamics during solidification and the distribution of Nb element during terminal solidification are predicted by the micro-scale phase-field simulation. The results show that Nb concentration is closely related to the molten pool site-specific solidification conditions. From the bottom to the top of the molten pool, the average Nb concentration of the interdendritic region decreases gradually with the increase of the cooling rate. The droplet-like Nb distribution is found in the interdendritic region of the long-chain Laves phase. The above simulation results are consistent with the experimental results. This work contributes to understand and control the element segregation and formation of Laves phase during laser additive manufacturing.
机译：在添加剂制造过程中，元素偏析对于确定组分的凝固结构和机械性能至关重要。在这项工作中，通过多尺度模型研究了基于镍的超合金的激光添加剂制造期间的溶质捕获行为和Nb偏析。通过宏观级别和传热模拟估计熔池的温度演变，并且通过微级相场模拟预测了凝固过程中的溶质动力学和Nb元素的分布。结果表明，Nb浓度与熔融池位点特异性凝固条件密切相关。从熔池的底部到顶部，随着冷却速率的增加，跨牙凝区域的平均Nb浓度逐渐降低。液滴状Nb分布在长链熔化阶段的植物间区域中发现。以上模拟结果与实验结果一致。这项工作有助于理解和控制激光添加剂制造期间疏浚液相的元素隔离和形成。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第12期|121800.1-121800.12|共12页
  • 作者

    Wenjia Xiao; Yuxiang Xu; Hui Xiao; Simeng Li; Lijun Song;

  • 作者单位

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan Provincial Key Laboratory of Intelligent Laser Manufacturing Hunan University Changsha 410082 China School of Mechatronics Engineering and Automation Foshan University Foshan 528225 China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan Provincial Key Laboratory of Intelligent Laser Manufacturing Hunan University Changsha 410082 China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan Provincial Key Laboratory of Intelligent Laser Manufacturing Hunan University Changsha 410082 China School of Mechatronics Engineering and Automation Foshan University Foshan 528225 China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan Provincial Key Laboratory of Intelligent Laser Manufacturing Hunan University Changsha 410082 China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan Provincial Key Laboratory of Intelligent Laser Manufacturing Hunan University Changsha 410082 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Laser additive manufacturing; Multi-scale modeling; Nickel-based superalloys; Solute trapping; Segregation;

    机译：激光添加剂制造;多尺度建模;镍基超合金;腐败;偏见;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号