华东交通大学学报2016，Vol.33Issue(6)：1-14,14.
焊接接头与结构疲劳延寿技术研究进展综述
Research Review on Fatigue Life Improvement of Welding Joint and Structure
摘要
Abstract
The current status and development of fatigue life improvement technology of welding joint and struc-ture was reviewed in this paper. The specifications for the practical use of the traditional welding improvement methods such as weld toe grinding, TIG dressing, hammer peening and needle peening were introduced accord-ing to the international guidelines. The recent development about the methods of ultrasonic peening and low transformation temperature welding material were also discussed in details. It is thought that the fatigue life im-provement technology of welding structure is still the international focus for a quite long period in future. More researches need to be conducted in the following areas:the mechanism and influencing factors of defects forming during hammer peening and ultrasonic peening process; the toughness increase of welding metal, the stability of retained austenite and the effect of base metal dilution on the microstructure of weld metal for low transformation temperature welding material;the design and evaluation of the structure treated by the improvement methods;the stability of the fatigue life improvement under complex load. It maintains that fatigue life improvement technolo-gy can be more widely used in high-end manufacturing industries.关键词
焊接结构/疲劳延寿/超声冲击/TIG熔修/磨削Key words
welding structure/fatigue life/ultrasonic peening/TIG dressing/grinding分类
矿业与冶金引用本文复制引用
王东坡,龚宝明,吴世品,张海,冯延焉..焊接接头与结构疲劳延寿技术研究进展综述[J].华东交通大学学报,2016,33(6):1-14,14.基金项目
国家自然科学基金项目(51275343,51375331) （51275343,51375331）
