700℃先进超超临界电站用高温合金焊接研究进展  

Research Progress of Welding of Superalloys for 700℃ Advanced Ultra-supercritical Power Plant

作　　者：尹宏飞[1] 袁勇[1] 严靖博[1] 党莹樱[1] YIN Hongfei;YUAN Yong;YAN Jingbo;DANG Yingying(Xi'an Thermal Research Institute Co., Ltd., Xi'an 710032, China)

机构地区：[1]西安热工研究院有限公司

出　　处：《热加工工艺》2019年第19期12-19,共8页Hot Working Technology

基　　金：中国华能集团有限公司重点科技项目(HNKJ17-H10)

摘　　要：综述了现有的700℃先进超超临界电站用主要候选高温合金材料焊接技术的研究现状,总结了近期在焊接研究及工程中发现的新问题,并提出了需要进一步优化及改进的方向。从工艺焊接性和使用焊接性两方面分别介绍了CCA 617合金、Inconel 740及其改型740H合金、Haynes 282合金的焊接性能以及存在的问题,并为材料的进一步工程应用提供了一定的参考价值。The research status of welding technology of main candidate superalloys for 700℃advanced ultra-supercritical power plant were reviewed,new problems found in the welding research and engineering were summarized and further optimization and improvement direction were put forward.Weldability and the problems of CCA 617 alloy,Inconel 740 and 740H alloy,Haynes 282 alloy were discussed from the aspects of fabrication weldability and service weldability,which could provide references for further engineering application of these materials.

关 键 词：先进超超临界 高温合金 焊接 焊接强度因子 

分 类 号：TG457.19[金属学及工艺—焊接]