DIMPLE FORMATION ON FRACTURE SURFACE OF STEEL 55SiMnMo

金属学报(英文版), 1993, 6(2): 140-143.

DIMPLE FORMATION ON FRACTURE SURFACE OF STEEL 55SiMnMo

LIANG Sizu LIANG Yaoneng LIU Zhengyi South China University of Technology , Guangzhou , China Lecturer , Department of Mechanical Engineering No.2 , South China University of Technology , Guangzhou 510641 , China

Keywords： dimple , null , null , null

The fracture surface of the normalized steel 55SiMnMo was observed,under tensile device at- tached on the SEM,to be of ductile dimple feature on the bainite which is composed of lath ferrite and austenite platelet.The dimple is essentially nucleated in the ferrite.Because the austenitic plastic deformation is remarkable during fracturing,the tear ridge of dimple is very sharp.

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DIMPLE FORMATION ON FRACTURE SURFACE OF STEEL 55SiMnMo

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