孙元, 秦鑫冬, 王诗洋, 侯星宇, 张洪宇, 谢君, 于金江. 高温合金熔化焊的研究现状及发展趋势[J]. 工程科学学报. DOI: 10.13374/j.issn2095-9389.2023.11.02.003
引用本文: 孙元, 秦鑫冬, 王诗洋, 侯星宇, 张洪宇, 谢君, 于金江. 高温合金熔化焊的研究现状及发展趋势[J]. 工程科学学报. DOI: 10.13374/j.issn2095-9389.2023.11.02.003
Research status and future perspectives on superalloy fusion welding[J]. Chinese Journal of Engineering. DOI: 10.13374/j.issn2095-9389.2023.11.02.003
Citation: Research status and future perspectives on superalloy fusion welding[J]. Chinese Journal of Engineering. DOI: 10.13374/j.issn2095-9389.2023.11.02.003

高温合金熔化焊的研究现状及发展趋势

Research status and future perspectives on superalloy fusion welding

  • 摘要: 高温合金具有独特的高温力学性能以及良好的高温抗氧化性能等特点,成为当今航空、航天、石油化工、冶金、电力、汽车等工业领域的关键材料。航空、舰船发动机以及燃气轮机的热端部件通常结构复杂,制造成本高,为满足其设计和维修要求,高温合金焊接技术的发展和实用化进程至关重要。本文综述了高温合金熔化焊的研究进展。对电弧焊、电子束焊和激光焊等常见高温合金熔化焊工艺技术的优势和应用范围进行了阐述;介绍了常见的焊接裂纹类型,并对凝固裂纹、晶界液化裂纹、应变时效裂纹和失塑裂纹的形成机理及影响因素进行了概括总结;此外,从热输入、材料的成分和微观结构以及焊接残余应力等方面探讨了提高熔化焊焊接性的主要技术方法。

     

    Abstract: Owing to the unique high-temperature mechanical properties and excellent high-temperature oxidation resistance, superalloys have been the key materials in aviation, aerospace, petrochemical, metallurgy, electric power, automotive and other industrial fields. Due to the structural complexity and high manufacturing cost of hot sections of aeroengine, vessel engine and gas turbines, the development and practicality of superalloy welding technology are crucial to meet the design and maintenance requirements of hot sections. In this paper, the research progress of superalloy fusion welding is described. The advantages and application scope of superalloy fusion welding technology such as arc welding, electron beam welding and laser welding are elaborated. The common types of welding cracks are introduced, and the mechanisms and influencing factors of solidification cracks, liquation cracks, strain-age cracks, and ductility-dip cracks are summarized. The main techniques for improving the weldability of fusion welding are also explored from the perspectives of heat input, material composition and microstructure, as well as welding residual stress.

     

/

返回文章
返回