Volume 37 Issue 3
Mar.  2022
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Article Navigation >  Journal of Aerospace Power  > 2022  >  37(3): 589-599
TANG Xin, ZHU Rupeng, YANG Maosheng, TANG Peng, LI Fajia, XIONG Xingbo. Bending fatigue failure mechanism of the new high temperature carburizing stainless aviation steel gear[J]. Journal of Aerospace Power, 2022, 37(3): 589-599. doi: 10.13224/j.cnki.jasp.20210155
Citation: TANG Xin, ZHU Rupeng, YANG Maosheng, TANG Peng, LI Fajia, XIONG Xingbo. Bending fatigue failure mechanism of the new high temperature carburizing stainless aviation steel gear[J]. Journal of Aerospace Power, 2022, 37(3): 589-599. doi: 10.13224/j.cnki.jasp.20210155
shu

Bending fatigue failure mechanism of the new high temperature carburizing stainless aviation steel gear

doi: 10.13224/j.cnki.jasp.20210155
  • 1.

    Science and Technology on Helicopter Transmission Laboratory，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

  • 2.

    Science and Technology on Helicopter Transmission Laboratory，Hunan Aviation Powerplant Research Institute，Aero Engine Corporation of China，Zhuzhou Hunan 412002，China

  • 3.

    Institute of Special Steel，Central Iron and Steel Research Institute，Beijing 100081，China

  • 4.

    School of Mechanical Engineering，University of Jinan，Jinan 250022，China

  • Received Date: 2021-04-07
  • Publish Date: 2022-03-28
    Abstract
  • The fracture failure mechanism for new high temperature carburizing stainless aviation steel cylindrical gears was studied.The bending fatigue test for gear was carried out using“B test method”based on the stipulated GB/T 14230-1993.The results showed that the carbides in surface carburizing layer，the surface machining defects and interior carbides were main inducement factors in the tooth fracture failure.The carbides in surface carburizing layer were the most serious reason.When the carbides and surface machining defects did not exist in the surface，the interior carbides could be generated under alternating stresses，resulting in initiation and propagation for crack.The smaller size carbides generated the rough “fish-eye” zone morphology.In order to obtain the higher service life of new high temperature carburizing stainless aviation steel cylindrical gears，the size，amount，shape factor of the carbides and surface machining defects on the tooth surface should be controlled during the whole surface machining.The crack initiation in surface should be avoided.

     

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