基于AISI 316L不锈钢桥梁曲率法的扫描策略参数对选择性激光熔化工艺残余应力的影响

Influence of Scanning Strategy Parameters on Residual Stress in the SLM Process According to the Bridge Curvature Method for AISI 316L Stainless Steel.

作者信息

Hajnys Jiri, Pagáč Marek, Měsíček Jakub, Petru Jana, Król Mariusz

机构信息

Department of Machining, Faculty of Mechanical Engineering, Technical University of Ostrava, Ostrava 708 00, Czech Republic.

Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Gliwice 44-100, Poland.

出版信息

Materials (Basel). 2020 Apr 3;13(7):1659. doi: 10.3390/ma13071659.

DOI:10.3390/ma13071659

PMID:32260108

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7178378/

Abstract

The present paper deals with the investigation and comparison of the influence of scanning strategy on residual stress in the selective laser melting (SLM) process. For the purpose of the experiment, bridge geometry samples were printed by a 3D metal printer, which exhibited tension after cutting from the substrate, slightly bending the samples toward the laser melting direction. Samples were produced with the variation of process parameters and with a change in scanning strategy which plays a major role in stress generation. It was evaluated using the Bridge Curvature Method (BCM) and optical microscopy. At the end, a recommendation was made.

摘要

本文探讨了扫描策略对选择性激光熔化（SLM）过程中残余应力的影响，并进行了相关研究和比较。为了进行实验，采用3D金属打印机打印了桥形几何形状的样品，这些样品从基板上切割下来后呈现出拉伸状态，样品略微向激光熔化方向弯曲。通过改变工艺参数和扫描策略来制作样品，扫描策略在应力产生中起着重要作用。使用桥曲率法（BCM）和光学显微镜进行了评估。最后，给出了相关建议。