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首页> 外文期刊>Journal of Materials Engineering and Performance >Microstructure and Mechanical Properties of 10CrNi3MoV Steel-SS304L Composite Bimetallic Plates Butt Joint by Shielded Metal Arc Welding
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Microstructure and Mechanical Properties of 10CrNi3MoV Steel-SS304L Composite Bimetallic Plates Butt Joint by Shielded Metal Arc Welding

机译：10CrNi3Mov钢-SS304L复合双金属板对接接头的微观结构和力学性能通过屏蔽金属弧焊

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摘要

In the present study, composite bimetallic plates of 10CrNi3MoV steel-304L stainless steel were butt welded by shielded metal arc welding (SMAW). A transition layer was designed to compensate for the dilution of Cr and Ni in stainless steel layer during the welding of dissimilar metals. From the results, it was seen that the lowest hardness of fusion weld was located in transition layer, followed by 304L stainless steel side, and the highest hardness occurred at 10CrNi3MoV steel area. The minimum hardness was related to high Cr and Ni in transition layer welded by E309L welding rod, and a uniform dendritic austenite structure was formed in the fusion weld. The formation of high-hardness carbides and vanadium-containing phases enhanced the hardness of the fusion weld. Butt welded joints had excellent tensile strength and toughness. The maximum tensile strength of the joint was about 694 MPa, and the tensile specimens fractured in ductile at matrix of the bimetallic plates. The impact energy of the weld joint was about 98 J at - 20 degrees C. When the number of loading cycles was set to 2 x 10(6) times, the maximum load limit of the bimetallic plate welded joint in 10CrNi3MoV steel was between 600 MPa and 625 MPa.
机译：在本研究中，采用手工电弧焊（SMAW）对焊了10CrNi3MoV钢-304L不锈钢复合双金属板。设计了过渡层，以补偿异种金属焊接过程中不锈钢层中铬和镍的稀释。从结果可以看出，熔焊的最低硬度位于过渡层，其次是304L不锈钢侧，最高硬度出现在10CrNi3MoV钢区域。E309L焊条焊接的过渡层中的铬和镍含量较高，焊缝中形成了均匀的枝晶奥氏体组织，硬度最低。高硬度碳化物和含钒相的形成提高了熔焊的硬度。对接焊接头具有优异的抗拉强度和韧性。接头的最大抗拉强度约为694MPa，拉伸试样在双金属板基体上呈韧性断裂。在-20℃下，焊接接头的冲击能量约为98 J。当加载循环次数设置为2 x 10（6）次时，10CrNi3MoV钢双金属板焊接接头的最大载荷极限在600 MPa和625 MPa之间。

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