| 预调质处理对商用车后桥半轴疲劳性能影响的研究 |
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| 引用本文： | 鹿云,张英健,杨福平,惠卫军,邓飞.预调质处理对商用车后桥半轴疲劳性能影响的研究[J].汽车技术,2012(3):49-53. |
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| 作者姓名： | 鹿云 张英健 杨福平 惠卫军 邓飞 |
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| 作者单位： | 1. 中国第一汽车股份有限公司技术中心
2. 钢铁研究总院结构材料研究所 |
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| 摘 要： | 针对中碳非调质钢后桥半轴和预调质处理的42CrMoH钢后桥半轴进行了半轴表面硬化层微观组织结构和疲劳性能对比试验研究。试验结果表明,预调质处理对后桥半轴组织细化、晶界钉扎和形核过程产生不利影响,使疲劳性能恶化;非调质钢后桥半轴的静态扭转强度和疲劳强度均比预调质处理后桥半轴显著提高,其中疲劳寿命提高1倍以上。指出,取消调质处理工艺,可节约能耗,降低生产成本。
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| 关 键 词： | 商用车 后桥半轴 预调质处理 疲劳性能 |
Influence of Quenching and Tempering Treatment on the Fatigue Performance of Heavy Truck Half Shaft |
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| Lu Yun
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Zhang Yingjian
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Yang Fuping
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Hui Weijun
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Deng Fei.Influence of Quenching and Tempering Treatment on the Fatigue Performance of Heavy Truck Half Shaft[J].Automobile Technology,2012(3):49-53. |
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| Authors: | Lu Yun Zhang Yingjian Yang Fuping Hui Weijun Deng Fei |
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| Institution: | 1(1.China FAW Co.,Ltd R&D Center;2.Central Iron & Steel Research Institute) |
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| Abstract: | Comparative test and research were made to the microstructure and fatigue performance of the surface hardened layer of driving axle half shaft subjected to non-quenched and tempered medium carbon and 42CrMoH steel driving axle half shaft which is subjected to pre-quenching treatment.Test results show that pre-quenching treatment has adverse impact to structure refinement,grain boundary pinning and nucleation process,and deteriorate fatigue performance.Static torsion strength and fatigue strength of non-quenched steel driving axle half shaft are much better than that of pre-quenched driving axle half shaft,its fatigue life is improved by more than one time.The results indicates that elimination of quenching treatment can save energy consumption and reduce production cost. |
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| Keywords: | Commercial vehicle driving axle half shaft quenching and tempering treatment fatigue performance |
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