Duplex stainless steel 2209 with excellent properties deposited by plasma arc additive manufacturing without post heat-treatment: favorable phase ratio and no σ-phase

IF 4.4 3区工程技术 Q1 ENGINEERING, CIVIL Archives of Civil and Mechanical Engineering Pub Date : 2024-06-11 DOI:10.1007/s43452-024-00907-8

Haoquan Zhang, Kang Peng, Xizhang Chen

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Abstract

This paper utilizes the plasma arc as the heat source to successfully fabricate well-formed thin-walled parts using combined cable wire duplex stainless steel 2209. Microstructure of parts exhibited the favorable two-phase ratio and the absence of σ-phase. It was found that appropriate heat input (1.68 kJ/cm) and cooling rate (5 °C/s) can effectively avoid the precipitation of σ-phase. Furthermore, the properties of the as-deposited samples were comparable to those of the samples heat-treated at 1300 °C, proving that no subsequent heat treatment was required for 2209 stainless steel fabricated by plasma arc additive manufacture. The samples showed excellent properties, in which the ultimate tensile strength and yield strength were improved by about 7% and 24% compared with GB/T4237-2015. The impact toughness meets the requirements of EN10028-7-2016, which is about 35% higher than that of the cold metal transfer samples, and the corrosion resistance is comparable to that of hot rolled 2205.

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通过等离子弧增材制造技术沉积出具有优异性能的双相不锈钢 2209，无需后热处理：相比值良好且无σ相

本文利用等离子弧作为热源，成功地使用组合电缆线双相不锈钢 2209 制成了成型良好的薄壁零件。零件的微观结构显示出良好的两相比例，且没有σ相。研究发现，适当的热输入（1.68 kJ/cm）和冷却速度（5 °C/s）可有效避免σ相的析出。此外，沉积样品的性能与在 1300 ℃ 下热处理的样品相当，证明等离子弧添加剂制造的 2209 不锈钢无需后续热处理。样品表现出优异的性能，其中极限抗拉强度和屈服强度与 GB/T4237-2015 相比分别提高了约 7% 和 24%。冲击韧性符合 EN10028-7-2016 的要求，比冷金属转移样品高出约 35%，耐腐蚀性与热轧 2205 相当。

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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.