Customized preparation of super martensitic stainless steel from duplex stainless steel and low alloy steel through double-wire arc additive manufacturing

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-29 DOI:10.1016/j.tws.2025.113252

Weiyao Tian , Haoyu Kong , Chencun Zhu , Chunyu Wang , Qi Sun , Yibo Liu , Qingjie Sun

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引用次数: 0

Abstract

Super martensitic stainless steel (SMSS), known for its excellent properties, was widely used in marine engineering, hydropower, and petrochemical fields. This study employed double-wire arc additive manufacturing, utilizing ER2209 and ER70-G welding wires as raw materials to fabricate a thin-walled structure with SMSS composition instead of traditional martensitic stainless steel welding wire or powder. This objective of this study was to explore a convenient material preparation method that reduced dependence on raw materials, thereby enhancing production efficiency and lowering costs. The produced SMSS exhibited a well-formed appearance with a uniform composition and no macro defects. The microstructure of the top layer consisted of δ-ferrite and fresh martensite, while other areas displayed a microstructure of martensite and austenite due to thermal cycle effects. The average microhardness of the prepared SMSS was 377.9 ± 15.5 HV, with a tensile strength of 1235.5 ± 11.4 MPa and an elongation of 16.7 ± 1.0 %, demonstrating a favorable combination of mechanical properties. During the deformation of the fabricated SMSS, a phase transformation from austenite to martensite occurred, resulting in material strengthening. This innovative material processing method may facilitate the customized preparation of high-performance SMSS thin-walled structures.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.