Directed energy deposition of metals: processing, microstructures, and mechanical properties

IF 16.8 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Materials Reviews Pub Date : 2022-07-13 DOI:10.1080/09506608.2022.2097411

Shi-Hao Li, Punith Kumar, S. Chandra, U. Ramamurty

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引用次数: 21

Abstract

ABSTRACT Amongst the many additive manufacturing (AM) techniques, directed energy deposition (DED) is a prominent one, which can also be used for the repair of damaged components. In this paper, we provide an overview on it, with emphasis on the typical microstructures of DED alloys and discuss the processing-microstructure-mechanical property correlations. Comparison is made with those manufactured using the conventional techniques and those obtained with laser beam powder bed fusion (LB-PBF). The characteristic solidification rates and thermal histories in DED result in distinct micro- and meso-structural features and mechanical performance, which are succinctly summarized. The potential of DED for manufacturing graded materials and for component repair is elaborated while highlighting the key-associated challenges and possible solutions. Modelling and simulation studies that facilitate an in-depth understanding of the DED technique are summarized. Finally, some critical issues and research directions that would help develop DED further and extend its application potential are identified.

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金属定向能沉积:加工、微观结构和机械性能

摘要在众多增材制造（AM）技术中，定向能量沉积（DED）是一种突出的技术，它也可用于修复损坏的部件。本文对其进行了概述，重点介绍了DED合金的典型微观结构，并讨论了加工微观结构与力学性能的相关性。将其与使用传统技术制造的那些和使用激光束粉末床融合（LB-PBF）获得的那些进行比较。DED中的特征凝固速率和热历史导致了不同的微观和细观结构特征以及力学性能，并对其进行了简要总结。详细阐述了DED在制造分级材料和部件维修方面的潜力，同时强调了关键的相关挑战和可能的解决方案。总结了有助于深入理解DED技术的建模和模拟研究。最后，确定了一些关键问题和研究方向，这些问题和方向将有助于进一步发展DED并扩大其应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Materials Reviews 工程技术-材料科学：综合

CiteScore

28.50

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： International Materials Reviews (IMR) is a comprehensive publication that provides in-depth coverage of the current state and advancements in various materials technologies. With contributions from internationally respected experts, IMR offers a thorough analysis of the subject matter. It undergoes rigorous evaluation by committees in the United States and United Kingdom for ensuring the highest quality of content. Published by Sage on behalf of ASM International and the Institute of Materials, Minerals and Mining (UK), IMR is a valuable resource for professionals in the field. It is available online through Sage's platform, facilitating convenient access to its wealth of information. Jointly produced by ASM International and the Institute of Materials, Minerals and Mining (UK), IMR focuses on technologies that impact industries dealing with metals, structural ceramics, composite materials, and electronic materials. Its coverage spans from practical applications to theoretical and practical aspects of material extraction, production, fabrication, properties, and behavior.