电弧增材制造制备的ER50-6钢的微观组织与性能

Microstructure and Properties of ER50-6 Steel Fabricated by Wire Arc Additive Manufacturing.

作者信息

Hu Qingxian, Miao Junyan, Wang Xiaoli, Li Chengtao, Fang Kewei

机构信息

School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China.

Suzhou Nuclear Power Research Institute, Suzhou 215004, China.

出版信息

Scanning. 2021 Aug 4;2021:7846116. doi: 10.1155/2021/7846116. eCollection 2021.

DOI:10.1155/2021/7846116

PMID:34408807

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8360717/

Abstract

In this paper, ER50-6 steel was fabricated by wire arc additive manufacturing (WAAM) with an A-W GTAW system. The microstructure, mechanical properties, and corrosion behaviors of ER50-6 steel by WAAM were studied. The results showed that, with the GMAW current increased, from the bottom to the top of the sample, the microstructure was fine ferrite and granular pearlite, ferrite equiaxed grains with fine grains at grain boundaries, and columnar ferrite, respectively. The average hardness in the vertical direction of samples 1# and 2# was 146 and 153 HV, respectively. The hardness of sample 2# increased because of the refinement of grain. The pores in the sample increased as the bypass current increased. The higher bypass current also has a deterioration effect on the corrosion behavior of ER50-6 steel.

摘要

在本文中，采用A-W GTAW系统通过电弧增材制造（WAAM）制备了ER50-6钢。研究了通过WAAM制备的ER50-6钢的微观结构、力学性能和腐蚀行为。结果表明，随着熔化极气体保护电弧焊（GMAW）电流增加，从样品底部到顶部，微观结构分别为细小铁素体和粒状珠光体、晶界处具有细晶粒的等轴铁素体晶粒以及柱状铁素体。1#和2#样品在垂直方向的平均硬度分别为146和153 HV。2#样品的硬度因晶粒细化而增加。随着旁路电流增加，样品中的气孔增多。较高的旁路电流对ER50-6钢的腐蚀行为也有恶化作用。