Inconel 690镍基合金焊接研究进展  

Research progress of Inconel 690 nickel base alloy welding

作　　者：熊丽 王晓南 张郑辉 XIONG Li;WANG Xiaonan;ZHANG Zhenghui(School of Iron and Steel,Soochow University,Suzhou 215002,Jiangsu pro.,China)

机构地区：[1]苏州大学沙钢钢铁学院,江苏苏州215021

出　　处：《焊接技术》2022年第3期12-18,I0007,共8页Welding Technology

基　　金：国家自然科学基金项目(51775102)。

摘　　要：Inconel 690镍基合金是一种面心立方结构的高温合金,具有优异的耐高温及耐腐蚀性能,被广泛应用于核电、石油化工和航空航天等领域。文中主要从焊接方法、凝固裂纹敏感性和高温失塑裂纹敏感性三个方面对Inconel 690镍基合金的焊接研究现状进行了总结和分析。传统熔化焊方法焊接Inconel 690镍基合金时易引起晶粒粗大、元素偏析并增加裂纹敏感性,而能量密度高的激光焊有望解决此类问题,然而相关研究较少;对铌的最佳含量范围存在很大分歧,析出相诱导机制的机理尚未明确,从工艺角度改善凝固裂纹和高温失塑裂纹的研究仍需进一步研究。Inconel 690 nickel-base alloy is a face-centered cubic superalloy with excellent high temperature and corrosion resistance.It is widely used in nuclear power,petrochemical and aerospace industries.In this paper,the research status of Inconel 690 Ni-based alloy welding was summarized and analyzed from three aspects:welding method,solidification crack sensitivity and high temperature deplastic crack sensitivity.The traditional fusion welding method for Inconel690 Ni-based alloy was easy to cause coarse grain,element segregation and increase crack sensitivity,while laser welding with high energy density was expected to solve this problem.The optimal range of niobium content was very different,and the mechanism of precipitating phase induction was not clear,so the improvement of solidification crack and high temperature deplastic crack need to be further studied.

关 键 词：Inconel 690镍基合金 焊接 凝固裂纹 高温失塑裂纹 

分 类 号：TG457.[金属学及工艺—焊接]