| Inconel 718镍基合金与304不锈钢电子束焊接 |
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| 引用本文： | 李宁,王刚,王廷,蒋思远,冯吉才.Inconel 718镍基合金与304不锈钢电子束焊接[J].焊接学报,2019,40(2):82-85. |
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| 作者姓名： | 李宁 王刚 王廷 蒋思远 冯吉才 |
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| 作者单位： | 哈尔滨工业大学(威海) 先进焊接与连接国家重点实验室, 威海 264209;哈尔滨工业大学(威海) 山东省特种焊接技术重点实验室, 威海 264209;哈尔滨工业大学 先进焊接与连接国家重点实验室,哈尔滨,150001;哈尔滨工业大学(威海) 先进焊接与连接国家重点实验室, 威海 264209;哈尔滨工业大学(威海) 山东省特种焊接技术重点实验室, 威海 264209;哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001 |
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| 基金项目： | 国家自然科学基金航天先进制造技术研究联合基金(U1637104)；山东省重点研发计划(2017GGX30110) |
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| 摘 要： | 对Inconel 718镍基合金与304不锈钢进行了电子束焊接试验，分析了接头显微组织及力学性能. 结果表明，焊缝区中部由枝晶及细小的等轴晶组成，在近镍侧及近钢的熔合线，都由向焊缝中心方向生长的树枝晶组成. 各特征区域显微硬度值各不相同，焊缝区高于镍基合金侧，高于不锈钢侧. 当焊接束流为8 mA，焊接速度为700 mm/min时，接头的抗拉强度最高为722 MPa. 拉伸试样断裂发生于焊缝区内部，呈典型的延性断裂，断口可观察到明显等轴状韧窝.
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| 关 键 词： | 电子束焊接 镍基合金 不锈钢 微观组织 力学性能 |
| 收稿时间： | 2018/7/5 0:00:00 |
Weldability of Inconel 718 and 304 stainless steel by electron beam welding |
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| LI Ning,WANG Gang,WANG Ting,JIANG Siyuan,FEN Jicai.Weldability of Inconel 718 and 304 stainless steel by electron beam welding[J].Transactions of The China Welding Institution,2019,40(2):82-85. |
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| Authors: | LI Ning WANG Gang WANG Ting JIANG Siyuan FEN Jicai |
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| Affiliation: | 1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology at Weihai, Weihai 264209, China;2. Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China;3. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The electron beam welding test of Inconel 718 nickel-based superalloy and 304 stainless steel was carried out, and the microstructure and mechanical properties of the joint were analyzed. The results show that the middle of the weld zone is composed of fine equiaxed grains, and in the near-nickel side and near-steel fusion lines, there are some growth directions. The hardness of the joints is different among WZ 304 stainless and Inconel 718 and the handless of WZ is higher than that of Inconel 718 and 304 stainless steel. When the welding beam is 8 mA and the welding speed is 700 mm/min, the tensile strength of the joint is 722 MPa. Tensile studies showed that the fracture occurred at the weld zone. The fracture featured a typical ductile fracture, consisting of the dimple of the isoaxial shape. |
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| Keywords: | electron beam welding|Ni-based alloy|stainless steel|microstructures|mechanical properties |
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