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首页> 外文期刊>Materials and Manufacturing Processes >Welding of Duplex Stainless Steel Composite Plate: Influence on Microstructural Development
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Welding of Duplex Stainless Steel Composite Plate: Influence on Microstructural Development

机译：双相不锈钢复合板的焊接：对显微组织发展的影响

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摘要

In the present study, the duplex stainless steel (DSS) composite plate (SAF2205/16MnR) was welded by shielded metal arc welding, and the appropriate joint design and welding procedure were carried out. After welding, the mechanical behaviors and microstructure of welded joint were analyzed by using SEM and TEM. Results show that the tensile strength of welded joint satisfied the requirement, and the plate-like 7-phase was uniformly distributed in alpha-Fe based solution matrix at interface between the DSS and weld metal, a carbon-rich layer and decarburized layer formed in carbon steel-weld metal interface due to migration of the element carbon. However, there were only alpha and gamma phases in weld metal of the joint transition layer, which is advantageous to the properties of welded joint.
机译：在本研究中，通过屏蔽金属电弧焊焊接了双相不锈钢（DSS）复合板（SAF2205 / 16MnR），并进行了适当的接头设计和焊接程序。焊接后，用SEM和TEM分析了焊接接头的力学性能和显微组织。结果表明，焊接接头的抗拉强度满足要求，板状7相均匀分布在DSS与焊缝金属界面处的α-Fe基溶液基体中，形成了富碳层和脱碳层。碳钢-焊接金属界面由于元素碳的迁移。但是，在接头过渡层的焊接金属中仅存在α相和γ相，这对于焊接接头的特性是有利的。

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