Influence of Melting Amount of TZM on the Microstructure and Properties of TZM/CoCrFeNiMo0.2/Q235 Electron Beam Welded Joints

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

JOM Pub Date : 2025-09-03 DOI:10.1007/s11837-025-07658-8

Debin Song, Ting Wang, Ruofan Wang, Siyuan Jiang

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引用次数: 0

Abstract

The influence of TZM melting amount on microstructure and mechanical properties of TZM/CoCrFeNiMo_0.2/Q235 electron beam welded joints was studied by using different interlayer thicknesses and beam offset distances. TZM molybdenum alloy and Q235 steel were joined using a CoCrFeNiMo_0.2 high-entropy alloy as an interlayer. The study demonstrated that optimal welding parameters, including an interlayer thickness of 0.4 mm and a beam offset distance of 0.2 mm, resulted in joints with superior tensile strength and defect-free weld morphology. Adjustments to interlayer thickness and beam positioning effectively controlled the melting extent of the TZM base material, thereby regulating the Mo content within the weld and suppressing the formation of brittle intermetallic compounds. Detailed microstructural analysis revealed that fine eutectic structures within the reaction layer played a crucial role in improving the performance of the joints, while excessive interlayer thickness or improper beam offset compromised mechanical integrity. These findings provided valuable insights into the development of high-performance composite structures and innovative welding strategies for dissimilar material joints.

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TZM熔量对TZM/CoCrFeNiMo0.2/Q235电子束焊接接头组织和性能的影响

采用不同的夹层厚度和束偏移距离，研究了TZM熔化量对TZM/CoCrFeNiMo0.2/Q235电子束焊接接头组织和力学性能的影响。采用CoCrFeNiMo0.2高熵合金作为中间层连接TZM钼合金和Q235钢。研究表明，最佳焊接参数（层间厚度为0.4 mm，梁偏移距离为0.2 mm）可获得优异的抗拉强度和无缺陷焊缝形貌。调整层间厚度和光束定位有效地控制了TZM基材的熔化程度，从而调节了焊缝内Mo含量，抑制了脆性金属间化合物的形成。详细的显微组织分析表明，反应层内细小的共晶组织对提高接头的性能起着至关重要的作用，而过度的层间厚度或不当的梁偏移会损害接头的机械完整性。这些发现为高性能复合材料结构的发展和不同材料接头的创新焊接策略提供了有价值的见解。

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

JOM 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.80%

发文量

540

审稿时长

2.8 months

期刊介绍： JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.