Role of layer thickness on the damage mechanism in the LPBFed copper alloy

IF 4.4 3区工程技术 Q1 ENGINEERING, CIVIL Archives of Civil and Mechanical Engineering Pub Date : 2024-06-07 DOI:10.1007/s43452-024-00983-w

M. Saravana Kumar, N. Jeyaprakash, Che-Hua Yang

引用次数: 0

Abstract

Parts with interior voids created by the LPBF process are known to have the potential to cause fracture when subjected to mechanical loading. In this research, the key process parameters such as laser thickness (LT), scanning speed (SS), and laser power (LP) were taken into consideration to avoid the void formations which was the major reason for affecting the structural integrity. So, void formations (V), ultimate tensile strength (UTS) and reduced modulus (RM) were considered as the response parameters in this study. The entropy-associated weighted aggregated sum product assessment (WASPAS) approach was implemented to examine the favorable conditions which substantiated that the LT is the most influential parameter in nucleation of voids. The verification experiments prove that the void formation was reduced by 98.6% and the UTS and RM were enhanced by 52.17 and 31.7%.

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层厚度对 LPBFed 铜合金损伤机制的影响

众所周知，LPBF 工艺产生内部空隙的零件在承受机械载荷时有可能导致断裂。在这项研究中，激光厚度（LT）、扫描速度（SS）和激光功率（LP）等关键工艺参数被纳入考虑范围，以避免出现空洞，因为空洞是影响结构完整性的主要原因。因此，本研究将空洞形成（V）、极限拉伸强度（UTS）和降低模量（RM）作为响应参数。采用熵相关加权聚合乘积评估（WASPAS）方法对有利条件进行检验，结果表明，LT 是对空洞成核影响最大的参数。验证实验证明，空洞的形成减少了 98.6%，而 UTS 和 RM 则分别提高了 52.17% 和 31.7%。

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来源期刊

Archives of Civil and Mechanical Engineering 工程技术-材料科学：综合

CiteScore

6.80

自引率

9.10%

发文量

201

审稿时长

4 months

期刊介绍： Archives of Civil and Mechanical Engineering (ACME) publishes both theoretical and experimental original research articles which explore or exploit new ideas and techniques in three main areas: structural engineering, mechanics of materials and materials science. The aim of the journal is to advance science related to structural engineering focusing on structures, machines and mechanical systems. The journal also promotes advancement in the area of mechanics of materials, by publishing most recent findings in elasticity, plasticity, rheology, fatigue and fracture mechanics. The third area the journal is concentrating on is materials science, with emphasis on metals, composites, etc., their structures and properties as well as methods of evaluation. In addition to research papers, the Editorial Board welcomes state-of-the-art reviews on specialized topics. All such articles have to be sent to the Editor-in-Chief before submission for pre-submission review process. Only articles approved by the Editor-in-Chief in pre-submission process can be submitted to the journal for further processing. Approval in pre-submission stage doesn''t guarantee acceptance for publication as all papers are subject to a regular referee procedure.