Investigation on Three-Dimensional Microstructures and Tensile Properties of Pure Iron during Equal-Channel Angular Pressing

Gang Yang; Mu Xin Yang; Zheng Dong Liu; Chang Wang; Chong Xiang Huang

doi:10.4028/www.scientific.net/MSF.667-669.791

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HomeMaterials Science ForumMaterials Science Forum Vols. 667-669Investigation on Three-Dimensional Microstructures...

Investigation on Three-Dimensional Microstructures and Tensile Properties of Pure Iron during Equal-Channel Angular Pressing

Abstract:

Commercial pure iron billets having diameter of 60 mm and length of 180 mm were subjected to equal channel angular pressing (ECAP) at 350 °C for 1-4 passes via route BC. Microstructural evolutions on three planes (X, Y, Z planes) were characterized by optical microscopy and transmission electron microscopy (TEM). It was found that after four passes an ultrafine microstructure could be formed on the X plane, but a band structure remained on the Z plane. Accordingly, the mechanical properties exhibited apparent dependence on the orientations. The strength in the X and Y directions was higher than that in the Z direction. The microstructural refinement and mechanical properties were discussed in terms of experimental results.

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Periodical:

Materials Science Forum (Volumes 667-669)

Pages:

791-796

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.667-669.791

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Online since:

December 2010

Authors:

Gang Yang, Mu Xin Yang, Zheng Dong Liu, Chang Wang, Chong Xiang Huang

Keywords:

Equal-Channel Angular Pressing (ECAP), Iron, Mechanical Property, Microstructure, UFG

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