Comparative studies on mechanical properties of novel lean duplex stainless steel S32001

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-06-14 DOI:10.1016/j.conbuildmat.2025.142065

Xin Yu , Bo-Yan Zhu , Yidu Bu , Xiang-Yong Xiao , Wei Liu

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引用次数: 0

Abstract

The recent successful mass production of S32001 has led to numerous engineering applications; however, there are limited studies specific to this grade. This study investigates its mechanical performance compared to traditional duplex stainless steel S32205 and carbon steel Q355, with special focus on anisotropy, cold-forming hardening, and welding characteristics. Experimental results show that S32001 has a dual-phase microstructure with balanced austenite and ferrite, offering competitive strength and improved plasticity over S32205. It exhibits anisotropic yield strength, a pronounced cold-forming effect enhancing strength but reducing ductility, and comparable welding performance to S32205, with a distinct heat-affected zone. Modifications to existing constitutive models were made to improve the prediction of stress-strain behaviour in both flat and cold-formed regions. Lastly, a life cycle cost (LCC) study confirms S32001’s cost-effectiveness in less corrosive environments.

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新型精益双相不锈钢S32001力学性能比较研究

最近S32001的成功批量生产已经导致了许多工程应用；然而，针对这个年级的研究有限。研究了其与传统双相不锈钢S32205和碳钢Q355的力学性能对比，重点研究了其各向异性、冷成形硬化和焊接特性。实验结果表明，S32001具有奥氏体和铁素体平衡的双相组织，具有较S32205更高的强度和塑性。其屈服强度呈各向异性，冷成形效应明显，强度提高但塑性降低，焊接性能与S32205相当，热影响区明显。对现有的本构模型进行了修改，以改进平弯和冷弯区域应力-应变行为的预测。最后，一项生命周期成本（LCC）研究证实了S32001在低腐蚀性环境中的成本效益。

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.