The fatigue crack growth rate has been investigated for SS400 and its welded joint based on the ASTM E647-83 specification. In the test the compact tension (CT) specimens were used.

• 笔者参照美国材料试验学会标准ASTME647 83的规定,采用紧凑拉伸CT试件对SS400钢及其焊接接头CT试件的疲劳裂纹扩展速率进行了测试。