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| Mechanism and application analysis on improved plasticity and toughness of 65Mn wire rod steel through low-temperature rolling |
| CHAO Yue-lin1,2，ZHANG Wei1，DENG Su-huai1，SUN Qi-song1，LIU Yang-bo1 |
（1. Special Steels Technology Department， Shougang Research Institute of Technology， Beijing 100043， China
2. Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production， Beijing 100043， China） |
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Abstract In the current article，the conventional process，open rolling and finish rolling at low temperature were studied， and influence ofthe rolling at low temperature on improved plasticity and toughness of 65Mn steel was analyzed. Microstructure， angle between grains， grain size and spacing between pearlite lamella were analyzed through optical microscope（OM）， scanning electron microscope（SEM） and electron back-scattered diffraction （EBSD）. The results showed that the area reduction （Z）of 65Mn steel increased and the circle fluctuations decreased through the process at low temperature. Angel between grains， small grain size and spacing between pearlite lamella were the key to affect the plasticity and toughness of 65Mn steel.
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Received: 23 November 2016
Published: 09 June 2017
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2017, Vol. 52 
