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| Effects of rolling schedules on microstructures and mechanical properties of SUS430 ferritic stainless steel |
| LI Qiu-he1，WANG Gang1，CHEN Li-qing2 |
（1. Department of Mechanical and Electronic Engineering， Yingkou Institute of Technology， Yingkou 115014， Liaoning， China
2. State Key Laboratory of Rolling and Automation， Northeastern University， Shenyang 110819， Liaoning， China） |
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Abstract The effects of cold rolling schedules， synchronous and asynchronous cold rolling， on the microstructure， texture evolution， and mechanical property and formability of SUS430 ferritic stainless steel sheet were investigated by using X-ray diffraction （XRD） and optical microscopy. The results showed that in asynchronous cold rolling， the average grain size of the sheet is finer than that of synchronous cold rolling due to the introduction of shear deformation. In synchronous cold rolling， a complete γ-fiber recrystallization texture could be obtained by annealing after two-step synchronous cold rolling， resulting in superior property as compared with that after one-step synchronous cold rolling. In asynchronous cold rolling， γ-fiber recrystallization texture with strong orientation of {111}<[1][1]2> could be obtained by annealing after one-step asynchronous cold rolling， while recrystallization texture with nearly random orientation is achieved by annealing after two-step asynchronous cold rolling. As a result， the property of the ferritic stainless steel after one-step asynchronous cold rolling is better than that with two-step asynchronous cold rolling. A comprehensive analysis further indicates that the two-step synchronous cold rolling is much more beneficial to the mechanical behavior and formability of SUS430 ferritic stainless steel compared with that with two-step asynchronous cold rolling.
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Received: 29 February 2016
Published: 08 October 2016
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2016, Vol. 51 
