金属热处理 ›› 2020, Vol. 45 ›› Issue (12): 114-119.DOI: 10.13251/j.issn.0254-6051.2020.12.022

• 工艺研究 • 上一篇    下一篇

固溶处理对DSS2205激光焊焊缝性能的影响

王维东1,2, 毕宗岳1,2, 鲜林云1,2, 汪海涛1,2, 李小龙1,2, 刘玉栋1,2, 于晨阳1,2, 徐学利3   

  1. 1.国家石油天然气管材工程技术研究中心, 陕西 宝鸡 721008;
    2.宝鸡石油钢管有限责任公司, 陕西 宝鸡 721008;
    3.西安石油大学 材料科学与工程学院, 陕西 西安 710065
  • 收稿日期:2020-06-02 出版日期:2020-12-25 发布日期:2021-01-14
  • 作者简介:王维东(1995—),男,硕士,主要研究方向为管材开发及焊接技术,E-mail:1052916008@qq.com
  • 基金资助:
    国家科技重大专项(2016ZX05023-006)

Effect of solution treatment on properties of DSS2205 laser weld seam

Wang Weidong1,2, Bi Zongyue1,2, Xian Linyun1,2, Wang Haitao1,2, Li Xiaolong1,2, Liu Yudong1,2, Yu Chenyang1,2, Xu Xueli3   

  1. 1. Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods, Baoji Shaanxi 721008, China;
    2. Baoji Petroleum Steel Pipe Co., Ltd., Baoji Shaanxi 721008, China;
    3. School of Materials Science and Engineering, Xi'an Shiyou University, Xi'an Shaanxi 710065, China
  • Received:2020-06-02 Online:2020-12-25 Published:2021-01-14

摘要: 针对双相不锈钢激光焊接后焊缝铁素体和奥氏体两相所占比例不平衡的问题,通过Gleeble-1300热模拟试验机对DSS2205激光焊焊缝进行不同温度和时间的固溶处理,并对固溶处理焊缝的组织和性能进行了分析。结果显示:在不同的固溶条件下,奥氏体形态和两相比例变化较大。随着温度和保温时间的增加,合金元素在两相中充分扩散迁移,奥氏体形态呈逐渐长大趋势,含量先增加再降低。在1050 ℃下保温5 min的试样组织均匀,可得到合适的铁素体和奥氏体相比例,焊缝硬度梯度均匀,冲击性能最好。

关键词: 固溶处理, DSS2205, 焊缝, 组织, 性能

Abstract: Aiming at the problem of disproportionate of ferrite and austenite of duplex stainless steel weld seam after laser welding, the DSS2205 laser weld seam was solution treated at different temperatures and time through the Gleeble-1300 thermal simulation tester. The results show that under different solid solution conditions, the austenite morphology and the two phase ratios change greatly. With the increase of temperature and holding time, the alloying elements fully diffuse and migrate in the two phases, and the austenite grain gradually grows, the content first increases and then decreases. After solution treated at 1050 ℃ for 5 min, the microstructure of the specimen is uniform, the proper proportion of ferrite and austenite phase can be obtained, the hardness gradient of weld seam is uniform, and the impact property becomes the best.

Key words: solution treatment, DSS2205, weld seam, microstructure, properties

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