ASSESSING AT CRACK TOLERANCE OF TC17 ALLOY’S EB-JOINTS BY CTOD CURVE

摘要：

This report, according to the welding structure integrity request, both in 20℃ and 400℃ temperature, carried network analysis on the Crack Tip Opening Displacement (CTOD) and the fracture toughness of the TC17 alloy’s electron beam joints. Based on the CTOD test, crack tolerance of EB-joints has been studied. Through researching, we got the following conclusions. No matter what temperature it is , normal (20℃)or high temperature（400℃）, the average CTOD value of the materials is higher than that of the joints, and the average CTOD value of the joints is low, easy to be fractured. The result of calculating the crack tolerance shows, under the same stress level, the crack tolerance of the metal holds higher than that of the joint, and when the stress level increase, the difference decreases.

作者: Wu bing Li jinwei Suo hongbo Zhang yanhua

作者单位: Key laboratory for high energy density beam processing technology, Beijing ,100024 Beijing University of Aeronautics and Astronautics, Beijing 100083.

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）