| Q345R/316L复合板镍基焊接接头性能 |
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| 引用本文： | 张侠洲,王凤会,陈延清,张熹,刘宏,杨建炜.Q345R/316L复合板镍基焊接接头性能[J].电焊机,2017,47(8). |
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| 作者姓名： | 张侠洲 王凤会 陈延清 张熹 刘宏 杨建炜 |
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| 作者单位： | 首钢技术研究院,北京,100043 |
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| 摘 要： | 采用TIG和SMAW焊焊接Q345R/316L双金属复合板。利用光学显微镜、电子显微探针、力学性能测试等分析手段研究复合板焊接接头显微组织、主要化学元素分布和力学性能。结果表明,采用THNi317焊条所获得的焊接接头组织主要为奥氏体和少量δ铁素体。基层焊缝熔合线处无明显合金元素稀释,同时未形成脱碳层。焊接接头力学性能良好,无缺陷,平均抗拉强度为519 MPa,焊缝、熔合线与热影响区的冲击功分别为77 J、116 J、69 J,焊道硬度均低于350 HV_(10),满足性能要求。
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| 关 键 词： | Q345R/316L复合板 显微组织 元素分布 力学性能 |
Properties of Ni-base welding joint of Q345R/316L clad plate |
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| ZHANG Xiazhou,WANG Fenghui,CHEN Yanqing,ZHANG Xi,LIU Hong,YANG Jianwei.Properties of Ni-base welding joint of Q345R/316L clad plate[J].Electric Welding Machine,2017,47(8). |
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| Authors: | ZHANG Xiazhou WANG Fenghui CHEN Yanqing ZHANG Xi LIU Hong YANG Jianwei |
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| Abstract: | Q345R/316L clad plate was welded through TIG and SMAW.Microstructure,main alloying elements distribution and mechanical properties were analyzed and investigated by optical microscope (OM),EMPA and mechanics apparatus.The results showed that microstructure of the THNi317 welding joint was austenite and a small amount of δ-ferrite.The chemical composition did not dilute apparently,and decarburized layer did not generate near the weld interface of base weld.The tensile strength of the welding joint was up to 519 MPa,the impact energy of welding joint,weld interface and HAZ were 77 J,116 J and 69 J.The hardness of welding joint was not higher than 350 HV1-The defect free joint was produced and performed well,could meet the requirements of the relevant technical standards. |
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| Keywords: | Q345R/316L clad plate microstructure element distribution mechanical properties |
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