Evaluation of delamination mechanisms from Charpy impact test in API-X70 steel
In this article was investigated the mechanisms of delamination phenomena occurs in the X70 steel during fracture process from the Charpy impact testing.Microtexture and Taylor factor map analysis were performed by electron backscatter diffraction (EBSD) technique in two fractured surface regions,namely,in the perpendicular and parallel regions to the propagation fracture direction where delamination occurred.As result,was observed two types of delaminations during fracture process,the crack arrester-type delamination and crack divider-type delamination.The main microtexture components obtained in the perpendicular and parallel regions to the direction of fracture propagation from orientation distribution function (ODF) were (221) 1-10 (223) 1-10 (112) 1-3-2 (332) 023 and (223) 0-32 and (332) 1-10 orientations,respectively.It was also observed the presence of the (100) planes and Taylor factor value close to 2.7 in the respective regions investigated,consequently,a smaller stored energy was observed.
Delamination Charpy impact test crystallography orientation
Hudison Haskel Ederson Pauletti Juliana P.Martins André L.M.Carvalho
Department of Materials Engineering,States University of Ponta Grossa-UEPG Department of Chemical Engineering,Federal Technological University of Paraná-UTFPR
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）