| 磁场作用下2205双相不锈钢焊缝成形与组织特征 |
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| 引用本文： | 孙清洁,李富祥,冀永壮,刘一搏,靳鹏,任惠圣. 磁场作用下2205双相不锈钢焊缝成形与组织特征[J]. 焊接学报, 2022, 43(4): 26-31+49+114. DOI: 10.12073/j.hjxb.20211121001 |
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| 作者姓名： | 孙清洁 李富祥 冀永壮 刘一搏 靳鹏 任惠圣 |
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| 作者单位： | 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), 山东省特种焊接技术重点实验室, 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 |
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| 基金项目： | 国家自然科学基金资助项目(52175299,U1960102)；;山东省自然科学基金项目(ZR2020KE010)； |
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| 摘 要： | 采用摆动电弧GTAW对2205双相不锈钢进行了自熔焊接.研究了不同励磁电流下焊缝截面的特征以及其对焊缝组织的影响.结果表明，摆动电弧可以促进接头的熔合，但随着励磁电流增加，熔合效果逐渐变差.摆动电弧可促进2205双相不锈钢焊缝中奥氏体的析出并可使铁素体得到细化，在励磁电流1 A下，效果最佳.奥氏体含量的增加缓解了由于相比例失衡所致的硬度值升高，使得焊缝硬度更加接近母材.
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| 关 键 词： | 励磁电流 双相不锈钢 熔合 相比例 |
| 收稿时间： | 2021-11-21 |
Weld forming and microstructure characteristics of 2205 duplex stainless steel via an assisted magnetic field |
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| Affiliation: | 1.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, China2.Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, China |
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| Abstract: | 2205 duplex stainless steel (DSS) was welded by autogenous GTAW with arc oscillation. The characteristics of welds section under different excitation currents and its influence on the weld microstructure were studied. The results show that the oscillating arc can promote the penetration of the joint, but the degree of penetration becomes worse with the increase of the excitation current. The oscillating arc can also contribute to austenite precipitation and refine ferrite in the weld of the 2205 DSS joint. The austenite content is the highest when the excitation current is 1A. The increase of austenite content alleviates the increase of hardness value caused by the unbalance of phase proportion and makes the weld hardness closer to the base metal. |
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