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首页> 外文期刊>Journal of Materials Research >Experimental analysis and thermodynamic calculations of an additively manufactured functionally graded material of V to Invar 36
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Experimental analysis and thermodynamic calculations of an additively manufactured functionally graded material of V to Invar 36

机译：V到Invar 36的V的增材制造的功能梯度材料的实验分析和热力学计算

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摘要

Functionally graded materials (FGMs) in which the elemental composition intentionally varies with position can be fabricated using directed energy deposition additive manufacturing (AM). This work examines an FGM that is linearly graded from V to Invar 36 (64 wt% Fe, 36 wt% Ni). This FGM cracked during fabrication, indicating the formation of detrimental phases. The microstructure, composition, phases, and microhardness of the gradient zone were analyzed experimentally. The phase composition as a function of chemistry was predicted through thermodynamic calculations. It was determined that a significant amount of the intermetallic sigma-FeV phase formed within the gradient zone. When the sigma phase constituted the majority phase, catastrophic cracking occurred. The approach presented illustrates the suitability of using equilibrium thermodynamic calculations for the prediction of phase formation in FGMs made by AM despite the nonequilibrium conditions in AM, providing a route for the computationally informed design of FGMs.
机译：可以使用定向能量沉积增材制造（AM）来制造元素成分有意随位置变化的功能梯度材料（FGM）。这项工作研究了从V到Invar 36（64 wt％Fe，36 wt％Ni）线性分级的FGM。该FGM在制造期间破裂，表明有害相的形成。实验分析了梯度区的微观结构，组成，相和显微硬度。通过热力学计算可以预测作为化学函数的相组成。已确定在梯度区内形成了大量的金属间σ-FeV相。当sigma相占多数时，发生灾难性的开裂。提出的方法说明了尽管AM中存在非平衡条件，但使用平衡热力学计算来预测AM制造的FGM中相形成的适用性，为FGM的计算信息化设计提供了一条途径。

著录项

  • 来源
    《Journal of Materials Research》 |2018年第11期|1642-1649|共8页
  • 作者

    Bobbio Lourdes D.; Bocklund Brandon; Otis Richard; Borgonia John Paul; Dillon Robert Peter; Shapiro Andrew A.; McEnerney Bryan; Liu Zi-Kui; Beese Allison M.;

  • 作者单位

    Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA;

    Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA;

    CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA;

    CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA;

    CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA;

    CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA;

    CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA;

    Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA;

    Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA;

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

    joining; laser; metal;

    机译：激光;金属;

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