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首页> 外文期刊>Journal of Manufacturing Processes >Surface residual stress in high speed cutting of superalloy Inconel718 based on multiscale simulation
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Surface residual stress in high speed cutting of superalloy Inconel718 based on multiscale simulation

机译：基于多尺度模拟的高温合金Inconel718高速切削中的表面残余应力

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摘要

inconel718 is one kind of nickel-based superalloy strengthened by body centered tetragonal gamma '' and face centered cubic gamma' precipitation, which has a high yield strength, high corrosion resistance and oxidation resistance at high temperature. Alloying elements exist in the form of high hardness compounds, such as TiC, NbC and other interphase hard point. These high hardness compounds result in the presence of high cutting temperature, large plastic deformation, especially the generation of residual stress in the machined surface. In this paper, the multi-scale finite element model of Inconel718 is established, and the cohesive element is added into the brittle phase particles to conduct the cutting simulation process. The accuracy of the established model is verified according to the chip morphology and the cutting force. The formation mechanism and distribution law of residual stress in the machined surface is studied deeply. The results show that the simulation results of the multi-scale finite element model which adds the brittle phase particles are closer to the experimental results. The larger the size of the brittle phase particles is, the smaller the residual stress of the workpiece is. Along the depth direction of workpiece, the influence of the brittle phase particles on the residual stress is getting smaller and smaller. This study provides a theoretical basis and reference for the further optimization of Inconel718 cutting performance and surface integrity. (C) 2017 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.
机译：inconel718是一种通过体心四方γ和面心立方γ'沉淀强化的镍基高温合金，在高温下具有高的屈服强度，高的耐腐蚀性和抗氧化性。合金元素以高硬度化合物的形式存在，例如TiC，NbC和其他相间硬点。这些高硬度化合物会导致切削温度高，塑性变形大，尤其是在机加工表面产生残余应力。本文建立了Inconel718的多尺度有限元模型，并将内聚元添加到脆性相颗粒中进行切削模拟。根据切屑的形态和切削力验证了建立模型的准确性。深入研究了机加工表面残余应力的形成机理和分布规律。结果表明，添加了脆性相颗粒的多尺度有限元模型的仿真结果更接近于实验结果。脆相颗粒的尺寸越大，工件的残余应力越小。沿工件的深度方向，脆性相颗粒对残余应力的影响越来越小。该研究为进一步优化Inconel718切削性能和表面完整性提供了理论依据和参考。 （C）2017年制造工程师学会。由Elsevier Ltd.出版。保留所有权利。

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  • 来源
    《Journal of Manufacturing Processes》 |2018年第1期|480-493|共14页
  • 作者

    Fan YiHang; Wang Tao; Hao ZhaoPeng; Liu XiaoYong; Gao Song; Li RongLi;

  • 作者单位

    ChangChun Univ Technol, Sch Mechatron Engn, Changchun 130012, Jilin, Peoples R China;

    ChangChun Univ Technol, Sch Mechatron Engn, Changchun 130012, Jilin, Peoples R China;

    ChangChun Univ Technol, Sch Mechatron Engn, Changchun 130012, Jilin, Peoples R China;

    ChangChun Univ Technol, Sch Mechatron Engn, Changchun 130012, Jilin, Peoples R China;

    ChangChun Univ Technol, Sch Mechatron Engn, Changchun 130012, Jilin, Peoples R China;

    ChangChun Univ Technol, Sch Mechatron Engn, Changchun 130012, Jilin, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Inconel718; Brittle phase particle; Multi-scale simulation; Residual stress;

    机译：Inconel718;脆性相颗粒;多尺度模拟;残余应力;

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