李嘉玮,赵新浩,李炎军,吴吉展,魏沛堂,刘怀举.服役工况及喷丸强化对航空齿轮钢接触疲劳性能的影响[J].表面技术,2023,52(2):14-24, 54.
LI Jia-wei,ZHAO Xin-hao,LI Yan-jun,WU Ji-zhan,WEI Pei-tang,LIU Huai-ju.Effect of Service Condition and Shot Peening on Rolling Contact Fatigue Performance of Aviation Gear Steel[J].Surface Technology,2023,52(2):14-24, 54 |
| 服役工况及喷丸强化对航空齿轮钢接触疲劳性能的影响 |
| Effect of Service Condition and Shot Peening on Rolling Contact Fatigue Performance of Aviation Gear Steel |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.02.002 |
| 中文关键词: 航空齿轮钢 服役工况 滚动接触疲劳 接触应力 滑差率 喷丸强化 |
| 英文关键词:aviation gear steel service condition rolling contact fatigue contact stress slip ratio shot peening |
| 基金项目:国家科技重大专项(2019–Ⅶ–0017–0158);国家重点研发计划(2022YFB3402800) |
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| Author | Institution |
| LI Jia-wei | State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China |
| ZHAO Xin-hao | AECC Zhongchuan Transmission Machinery Co., Ltd., Changsha 410200, China |
| LI Yan-jun | AECC Sichuan Gas Turbine Research Establishment, Chengdu 610500, China |
| WU Ji-zhan | State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China |
| WEI Pei-tang | State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China |
| LIU Huai-ju | State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China |
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| 中文摘要: |
| 目的 针对不同服役工况和表面处理下航空齿轮钢接触疲劳性能不明确的问题，探究不同工况参数及喷丸强化对AISI 9310航空齿轮钢接触疲劳性能的影响。方法 基于双圆盘滚动接触疲劳试验台，对AISI 9310航空齿轮钢圆盘滚子试件在2种接触应力、3种滑差率的服役工况，以及渗碳磨削、喷丸强化2种工艺下开展滚动接触疲劳性能研究。使用白光干涉仪、X射线衍射应力仪和显微硬度仪对喷丸强化前后的表面形貌、残余应力和显微硬度进行表征，探究喷丸处理后的表面完整性与滚动接触疲劳性能之间的规律。结果 当接触应力由2.5 GPa增至3.0 GPa时，AISI 9310试件的滚动接触疲劳寿命降低了64.7%;当滑差率由10%增至20%、30%时，试件的滚动接触疲劳寿命分别下降了18.9%和42.8%，同时寿命分散性有所降低。此外，研究发现喷丸强化使试件表面残余压应力提升了104.3%，并形成了残余压应力层，表面显微硬度提升了4.8%，同时使试件的沟壑状刀痕转变为凹凸不平的弹坑，表面性状宽高比提升至0.931 0，更有利于润滑油的储存，从而使得试件的滚动接触疲劳寿命提升了87.8%。结论 获取了不同接触应力、滑差率和表面强化处理对AISI 9310航空齿轮钢滚动接触疲劳性能的影响规律，为我国航空齿轮抗疲劳设计制造提供了评价方法和基础数据。 |
| 英文摘要: |
| The working environment of aviation gears is complex. Its service performance is affected by various service conditions such as contact stress and slip ratio and surface integrity parameters such as surface morphology, residual stress and hardness introduced by different surface treatments represented by shot peening. The contact fatigue performance under different service conditions and surface treatments has not yet formed a quantitative conclusion, which seriously affects the forward design and development of a new generation of aviation systems. Aiming at this problem, the work aims to investigate the effect of different service condition parameters and shot peening treatment on the contact fatigue performance of the aviation gear steel. The twin-disk rolling contact fatigue test rig was used to carry out the experiments of AISI 9310 aviation gear steel disk rollers. The rolling contact fatigue lives of carburizing grinding rollers under the service conditions of two contact stresses and three slip ratios were investigated. In addition, the fatigue lives of the rollers under two different surface treatments, carburizing grinding and shot peening, were studied. The white light interferometer, X-ray diffractometer and micro hardness tester were used to measure the surface topography, residual stress and micro hardness of the two surface treatments. Thus, the relation between surface integrity parameters and rolling contact fatigue life was explored. As contact stress increased from 2.5 GPa to 3.0 GPa, the rolling contact fatigue life of the AISI 9310 rollers decreased from 5.30×106 to 1.87×106 by 64.7%. This was because the increase of contact stress aggravated the plastic deformation of the material and increased the crack growth rate. Moreover, it was found that when the slip ratio increased from 10% to 20% and 30%, the rolling contact fatigue life of decreased from 1.87×106 to 1.52×106 by 18.9% and 1.07×106 by 42.8%, respectively. At the same time, the dispersion of contact fatigue life was reduced. The increase of slip ratio increased the friction on the surface of the material, making it easier for the lubricating oil to penetrate into the crack and accelerating the further propagation of the crack, thereby promoting the formation of pits. Furthermore, it was found that shot peening treatment enhanced the surface residual compressive stress of the specimens by 104.3% and introduced a residual compressive stress layer. The surface microhardness was increased by 4.8% at the same time. The surface roughness Sa of the carburized grinding specimen was 0.53 μm, and it was increased to 1.16 μm after shot peening treatment, with an increase of 118.9%. Shot peening also converted the gully tool marks of the specimens into uneven craters and improved surface texture aspect ratio Str to 0.931 0, which facilitated the storage of lubricating oil. Therefore, the rolling contact fatigue life of shot peeing rollers increased from 1.52×106 to 2.76×106 by 87.8% compared to carburizing grinding rollers. In this work, the effect of contact stress, slip rate and surface treatments on the contact fatigue performance of AISI 9310 aviation gear steel is obtained, which provides basic data for the anti-fatigue design and manufacture of aviation gear in China. |
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