Abstract This paper studies the fatigue crack growth rate of GDL-1 bainite steel with high strength and toughness in different heat treatment conditions by fatigue crack propagation tests.

• 摘要 通过疲劳裂纹扩展试验，研究了不同热处理状态下GDL-1型高强韧贝氏体钢的疲劳裂纹扩展速率和疲劳裂纹扩展门槛值，得出了有价值有意义的结论。