Transformation hardening of Mn13 under impact rolling load

Time:2021-1-23

The results show that the hot-rolled high manganese steel Mn13 has a good anti rolling abrasive wear performance under high rolling load; there is a certain thickness of hardened layer on the surface of rolling abrasive wear, and with the increase of rolling load, the hardness of wear surface increases and the thickness of hardened layer increases.
Deformation twins and martensitic transformation are the main reasons for the improvement of work hardening and wear resistance; under low load impact, the wear mechanism is mainly chiseling wear accompanied by furrow cutting wear; under high load impact, the wear mechanism is chiseling wear and furrow scratch transition to fatigue spalling and chiseling wear.
Wear performance of Mn13 on M2000 friction and wear tester
Transformation hardening of Mn13 under impact rolling load
The results show that the wear weight loss and wear rate of impact abrasive wear of Mn13 steel plate decrease with the increase of impact energy, the work hardening degree increases with the increase of impact energy, and the martensite transformation in the hardened layer also increases with the increase of impact energy. The martensite transformation is the main reason for the work hardening of Mn13 steel plate
Transformation hardening of Mn13 under impact rolling load
The wear mechanism of Mn13 steel plate is fatigue fracture caused by multiple plastic deformation
The results show that the wear resistance of Mn13 steel is better under the conditions of high load dry friction and low load coal powder. The wear mechanism of Mn13 steel under dry friction is mainly furrow and fatigue spalling wear. The wear mechanism of Mn13 steel with coal powder and quartz sand as abrasives is mainly furrow cutting and chiseling cutting. There is also rolling adhesive film of coal powder under high load.
The wear resistance of Mn13 steel is better when hard particles (coal gangue, quartz sand) are used as abrasives, and the work hardening effect is obvious.

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