Evolution of cementite morphology in pearlitic steel wire during wet wire drawing
- Advanced Materials Laboratory, Department of Materials Science and Engineering, Tsinghua University, 100084 (China)
- Center for Fundamental Research: Metal Structures in Four Dimensions, Materials Research Division, Riso National Laboratory for Sustainable Energy, DTU, DK-4000 Roskilde (Denmark)
- School of Materials Science and Engineering, Chongqing University, Chongqing, 400030 (China)
The evolution of the cementite phase during wet wire drawing of a pearlitic steel wire has been followed as a function of strain. Particular attention has been given to a quantitative characterization of changes in the alignment and in the dimensions of the cementite phase. Scanning electron microscope observations show that cementite plates become increasingly aligned with the wire axis as the drawing strain is increased. Measurements in the transmission electron microscope show that the cementite deforms plastically during wire drawing , with the average thickness of the cementite plates decreasing from 19 nm ({epsilon} = 0) to 2 nm ({epsilon} = 3.7) in correspondence with the reduction in wire diameter. The deformation of the cementite is strongly related to plastic deformation in the ferrite, with coarse slip steps, shear bands and cracks in the cementite plates/particles observed parallel to either {l_brace}110{r_brace}{sub {alpha}} or {l_brace}112{r_brace}{sub {alpha}} slip plane traces in the ferrite.
- OSTI ID:
- 22066172
- Journal Information:
- Materials Characterization, Vol. 61, Issue 1; Other Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
- Country of Publication:
- United States
- Language:
- English
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