ZHANG Wei,JIA Huapo,GUAN Rongxin,et al. Study on the effect of nitrogen ion implantation process on the bending fatigue strength of carburized and quenched gear[J]. Journal of Mechanical Strength,2025,47(8):91-100.
ZHANG Wei,JIA Huapo,GUAN Rongxin,et al. Study on the effect of nitrogen ion implantation process on the bending fatigue strength of carburized and quenched gear[J]. Journal of Mechanical Strength,2025,47(8):91-100. DOI: 10.16579/j.issn.1001.9669.2025.08.011.
Study on the effect of nitrogen ion implantation process on the bending fatigue strength of carburized and quenched gear
Aiming at optimizing the gear surface modification process
the influence of ion nitrogen implantation on the bending fatigue strength of carburized and quenched gears was studied.Using low-carbon alloy steel 18CrNiMo7-6 carburized and quenched gears as the matrix
nitrogen ion implantation treatment was carried out through a radio-frequency plasma-assisted ion implantation system. The root metallography
hardness gradient
residual stress distribution
and bending fatigue properties of ion-implanted gears and unimplanted gears were systematically compared. The results show that the ion nitrogen implantation process increases the root hardness from 695 HV0.1 to 780 HV0.1
an increase of 12.2%; the hardened layer depth decreases from 1.50 mm to 1.41 mm
a reduction of 6.0%; and the surface residual stress decreases from -400 MPa to -286 MPa
a reduction of 28.5%. Based on the R-S-N equation fitted by bending fatigue tests
under 99% reliability
the fatigue life of ion-implanted gears is only 12.3%-19.3% of that of the control gears
with the failure mode dominated by brittle fracture and accelerated crack propagation rate. The study indicates that although ion nitrogen implantation can delay crack initiation through surface strengthening
the excessively shallow hardened layer and reduced residual stress lead to insufficient crack propagation resistance
ultimately weakening the bending fatigue life of gears.
ZHAO Pengbo , CHEN Yong , YOU Hui , et al . Forecast of bending fatigue life for gears considering the influence of residual stress and hardness [J]. Journal of Mechanical Strength , 2025 , 47 ( 2 ): 53 - 60 . (In Chinese)
CHEN Weihao , XU Zikuan , GU Xuezhong , et al . High temperature fatigue behavior of carburized high-strength gear steel BG801 [J]. Heat Treatment of Metals , 2025 , 50 ( 3 ): 255 - 263 . (In Chinese)
CONRADO E , GORLA C , DAVOLI P , et al . A comparison of bending fatigue strength of carburized and nitrided gears for industrial applications [J]. Engineering Failure Analysis , 2017 , 78 : 41 - 54 .
XU C L , WANG X , ZHANG B , et al . Effect of the pre-shot peening and nitrogen ion implantation combined surface treatments on the surface structure and properties of gear steel 16Cr 3 NiWMoVNbE [J]. Metals , 2022 , 12 ( 9 ): 1509 .
CAO Z Y , HE W F , LUO S H , et al . Effect of combined laser shock peening and nitrogen implantation on the microstructure and tribology of M50 bearing steel [J]. Journal of Materials Research and Technology , 2024 , 30 : 5080 - 5095 .
RYABCHIKOV A , SIVIN D , ANANIN P , et al . High intensity,low ion energy implantation of nitrogen in AISI 5140 alloy steel [J]. Surface and Coatings Technology , 2018 , 355 : 129 - 135 .
LIU W M , MAN Q Y , LI J , et al . Microstructural evolution and vibration fatigue properties of 7075-T651 aluminum alloy treated by nitrogen ion implantation [J]. Vacuum , 2022 , 199 : 110931 .
PANDEY R K , MISHRA P , PANDEY A , et al . Effects of Si ion implantation on the surface and electrical characteristics of epitaxial GaSb [J]. Vacuum , 2022 , 198 : 110883 .
LI X M , CHEN L , HOU J , et al . Improving the sensitivity of LaMnO 3 NTC films by Al ion implantation [J]. Vacuum , 2023 , 208 : 111704 .
LEVINTANT-ZAYONTS N , STARZYŃSKI G , KUCHARSKI S . Effect of N ion implantation on tribological properties of spring steels [J]. Applied Surface Science , 2022 , 591 : 153117 .
XIE X Y , CHEN C , LUO J , et al . The microstructure and tribological properties of M50 steel surface after titanium ion implantation [J]. Applied Surface Science , 2021 , 564 : 150349 .
HUANG Yueshan , MENG Jilong , LIU Zhengyi . Study on surface modification of titanium allyoy by ion implantation [J]. Journal of Jinan University (Natural Science & Medicine Edition) , 1997 , 18 ( S1 ): 66 - 68 . (In Chinese)
ZHANG J F , PENG S X , ZHANG A L , et al . Nitrogen ion implantation on the mechanical properties of AISI 420 martensitic stainless steel [J]. Surface and Coatings Technology , 2016 , 305 : 132 - 138 .
VOORWALD H J C , BONORA R G , OLIVEIRA V M C A , et al . Increasing fatigue resistance of AISI 4340 steel by nitrogen plasma ion-implantation [J]. Engineering Failure Analysis , 2019 , 104 : 490 - 499 .
COLLINS G A , HUTCHINGS R , TENDYS J . Plasma immersion ion implantation of steels [J]. Materials Science and Engineering:A , 1991 , 139 : 171 - 178 .
JIA Chenfan , LU Zehua , WU Jizhan , et al . Study of the fundamental data of high-performance gears [J]. Scientia Sinica (Technologica) , 2024 , 54 ( 6 ): 1149 - 1170 . (In Chinese)
LIN Ruiyi , YIN Chaochao , SHI Lubing , et al . Residual stress in gear manufacturing and its influence on fatigue properties [J]. Journal of Mechanical Strength , 2024 , 46 ( 5 ): 1216 - 1227 . (In Chinese)
National Technical Committee of Gear Standardization . Calculation of load capacity of spur and helical gears:Part 3:Calculation of tooth bending strength : GB/T 3480.3—2021 [S]. Beijing : Standards Press of China , 2021 : 11 - 35 . (In Chinese)
WU Luji , YANG Shihao , YANG Linjie , et al . Study on the root crack propagation characteristics and residual life of case-hardened gears [J]. Journal of Mechanical Transmission , 2023 , 47 ( 11 ): 1 - 8 . (In Chinese)