Microstructure, mechanical and electrochemical properties of wire-arc additively manufactured duplex stainless steel

IF 3.1 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science and Technology of Welding and Joining Pub Date : 2022-12-02 DOI:10.1080/13621718.2022.2151766

Aobo Liu, Bangzhao Yin, Di Zhang, Peng Wen

引用次数: 4

Abstract

Wire-arc additively manufactured (WAAM) super duplex stainless steels (DSS) 2594 walls were fabricated to investigate the microstructure of different regions, including top, body and root as well as the influence of microstructure on mechanical and electrochemical properties. The microstructure was composed of ferrite and austenite with a few nitride precipitates. The ferrite content decreased from top to root. The average hardness increased slightly from top to root. The ultimate tensile strength of different regions varied slightly, comparable to that of the hot-rolled plate. Compared with those in vertical direction, samples in the horizontal direction had higher strength and lower elongation. The corrosion resistance ranked as root ≈ body > hot-rolled > top.

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丝弧加成法制备双相不锈钢的组织、力学和电化学性能

制作了线弧加成法制备（WAAM）超双相不锈钢（DSS）2594壁，研究了不同区域（包括顶部、主体和根部）的微观结构，以及微观结构对力学和电化学性能的影响。显微组织由铁素体和奥氏体组成，并有少量氮化物沉淀。铁素体含量由上至下呈下降趋势。平均硬度从顶部到根部略有增加。不同区域的极限抗拉强度略有不同，与热轧板的极限抗拉性能相当。与垂直方向的样品相比，水平方向的样品具有更高的强度和更低的伸长率。耐腐蚀性等级为根部≈本体 > 热轧的 > 顶部

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

Science and Technology of Welding and Joining 工程技术-材料科学：综合

CiteScore

6.10

自引率

12.10%

发文量

审稿时长

1.7 months

期刊介绍： Science and Technology of Welding and Joining is an international peer-reviewed journal covering both the basic science and applied technology of welding and joining. Its comprehensive scope encompasses all welding and joining techniques (brazing, soldering, mechanical joining, etc.) and aspects such as characterisation of heat sources, mathematical modelling of transport phenomena, weld pool solidification, phase transformations in weldments, microstructure-property relationships, welding processes, weld sensing, control and automation, neural network applications, and joining of advanced materials, including plastics and composites.