700℃先进超超临界电站用617和740镍基合金焊接研究进展  

Progress of welding technology of 617 and 740 Ni-based alloys for 700℃ advanced ultra-supercritical power plant

作　　者：叶建水[1] 董建新[1] 张麦仓[1] 姚志浩[1] 郑磊[1] 

机构地区：[1]北京科技大学,北京100083

出　　处：《世界钢铁》2013年第4期63-72,共10页World Iron & Steel

摘　　要：Inconel617和Inconel740及其改型合金是700℃以上先进超超临界电站用候选材料。合金的焊接性及焊接工艺是材料能否进入实际应用的关键之一,因此Inconel617和Inconel740及其改型合金焊接性的评估和焊接工艺的选择十分重要。介绍了Inconel617和Inconel740及其改型合金的特点及焊接方法。从结晶裂纹、液化裂纹、高温失塑裂纹和应变时效裂纹4个方面概述了Inconel617和Inconel740合金的焊接性,并且讨论了不同裂纹所对应的避免措施。最后综述了Inconel617和Inconel740H合金的焊接研究进展。Inconel617, Inconel740 and their modified alloys are candidate alloys of 700℃ advanced ultra - supercritical power plant. Weldability and welding technology of alloy are one of the key on whether the material can be applied to practical usage, so evaluation of weldability and selection of welding process of Inconel617, Inconel740 and their modified alloys are very important. This paper introduces Inconel617 and Inconel740＇ s characteristics and their welding methods. Weldability of Inconel617 and Incone1740 are discussed from the aspects of solidification crack, liquation crack, ductility -dip crack and strain -age crack, and measures for avoiding different crack are discussed. Finally progress of welding process of Inconel617 and Inconel740H are reviewed.

关 键 词：617 740 超超临界 焊接性 焊接工艺 

分 类 号：TG146.15[一般工业技术—材料科学与工程]