Abstract��Defects in 37CrMnMo4 drill pipe joints are investigated by using optical microscope (OM), scan electron microscope (SEM), energy-dispersive X-ray spectrometry (EDS) and wave-dispersive X-ray spectrometry (WDS). Results show that structure of the drill pipe joints presents over-burnt status, and there are some segregations of P��Mo��Cr around the free crystallization interfaces and in remelted grain boundaries. It is considered that the segregation of Mo��Cr elements should cause deformation burnt in drill pipe joints.
������ ������ ������. 37CrMnMo4��˽�ͷȱ�ݷ���[J]. �й������ڿ���, 2009, 27(6): 58-58.
WANG Guo-dong Zuogui ZHANG Junliang LIU. Defects Analysis on 37CrMnMo4 Drill Pipe Joints. Chinese Journal of Iron and Steel, 2009, 27(6): 58-58.
2009, Vol. 27 
