Volume 34 Issue 5
Oct.  2019
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ZHA Xiaoqin, REN Yongfeng, HEI Penghui, ZHAI Zhiliang. Causes and Control of Welding Problems of Duplex Stainless Steel[J]. Development and Application of Materials, 2019, 34(5): 59-65. DOI: 10.19515/j.cnki.1003-1545.2019.05.013
Citation: ZHA Xiaoqin, REN Yongfeng, HEI Penghui, ZHAI Zhiliang. Causes and Control of Welding Problems of Duplex Stainless Steel[J]. Development and Application of Materials, 2019, 34(5): 59-65. DOI: 10.19515/j.cnki.1003-1545.2019.05.013
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Causes and Control of Welding Problems of Duplex Stainless Steel

  • 1. Luoyang Ship Material Research Institute, Luoyang 471023, China;

  • 2. Henan University of Science and Technology, Luoyang 471023, China;

  • 3. Luoyang Sunrui Special Equipment Co., Ltd., Luoyang 47100, China

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  • Received Date: March 13, 2019
  • Available Online: March 15, 2024
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    • Abstract
  • The causes and control methods of weldability problems in the welding process of duplex stainless steel are reviewed. The results show that the chemical composition of base material/welding material, welding input line energy and cooling rate are the main factors affecting the two-phase ratio, harmful phase precipitation, hydrogen-induced cracking, residual stress and deformation of duplex stainless steel joints. A duplex stainless steel welded joint with good comprehensive performance can be obtained by reasonable material selection and control of process parameters. Another effective way to prevent hydrogen-induced cracking of duplex stainless steel is to avoid high hydrogen content in the surrounding environment during welding and use.
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