Three-Dimensional Microstructures and Tensile Properties of Pure Iron During Equal Channel Angular Pressing

Commercial pure iron billets having diameter of 60 mm and length of 180 mm were subjected to equal channel angular pressing（ECAP） at 350 ℃ for 1 to 4 passes via route Bc.Microstructural evolutions on three planes（X,Y,Z planes） were characterized by optical microscopy and transmission electron micros...

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Bibliographic Details
Published inJournal of iron and steel research, international Vol. 18; no. 12; pp. 40 - 44
Main Authors YANG, Gang, YANG, Mu-xin, LIU, Zheng-dong, WANG, Chang
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.12.2011
Springer Singapore
Subjects
Applied and Technical Physics
Billets
ECAP
Engineering
Equal channel angular pressing
iron
Iron and steel industry
Machines
Manufacturing
Materials Engineering
Materials Science
Mechanical properties
mechanical property
Metallic Materials
Microstructure
Physical Chemistry
Planes
Processes
Steels
Three dimensional
UFG
光学显微镜
拉伸性能
立体
等通道转角挤压
纯铁
组织演变
透射电子显微镜
iron
mechanical property
microstructure
ECAP
UFG
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Summary:Commercial pure iron billets having diameter of 60 mm and length of 180 mm were subjected to equal channel angular pressing（ECAP） at 350 ℃ for 1 to 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.
Bibliography:11-3678/TF
iron; ECAP; UFG; microstructure; mechanical property
Commercial pure iron billets having diameter of 60 mm and length of 180 mm were subjected to equal channel angular pressing（ECAP） at 350 ℃ for 1 to 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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ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(12)60007-7