Abstract��To reduce losses of fracture separation of Q345B low alloy steel, microstructure and stress distribution are analyzed and discussed using optical microscope and scanning electron microscope (SEM) and in-situ analyzer. The result indicates that: the internal reason of fracture separation is long strip sulfide and center segregation, however the stress in samples in tension test is the inducement of fracture; several countermeasures such as controlling sulfide, casting machine maintenance, slab slow cooling were put forward and remarkable result was obtained.
������. Q345B�ְ�����Ͽڷ���ԭ�������Ľ���ʩ[J]. �й������ڿ���, 2013, 31(1): 37-40.
HAN Qi-biao. Analysis on Tension Fracture Separation of Q345B and Countermeasures. Chinese Journal of Iron and Steel, 2013, 31(1): 37-40.
2013, Vol. 31 
