| 涂层硬质合金刀具铣削粉末冶金镍基高温合金时的失效机理 |
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| 引用本文： | 乔阳,艾兴,赵军,刘战强.涂层硬质合金刀具铣削粉末冶金镍基高温合金时的失效机理[J].北京工业大学学报,2011,37(1):1-6. |
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| 作者姓名： | 乔阳 艾兴 赵军 刘战强 |
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| 作者单位： | 山东大学机械工程学院高效洁净机械制造教育部重点实验室,济南,250061;山东大学机械工程学院高效洁净机械制造教育部重点实验室,济南,250061;山东大学机械工程学院高效洁净机械制造教育部重点实验室,济南,250061;山东大学机械工程学院高效洁净机械制造教育部重点实验室,济南,250061 |
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| 基金项目： | 国家“九七三”计划资助项目(2009CB7244012009CB724402) |
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| 摘 要： | 使用涂层硬质合金刀具,对粉末冶金镍基高温合金进行了干式面铣试验.采用电子扫描显微镜(scan-ning electron microscopy,SEM)、数码显微镜(digital microscope,DM)和能谱探针(energy dispersive spectrometry,EDS)等工具,对硬质合金刀具前、后刀面的磨、破损形貌和失效机理进行了分析与研究.研究结果表明:涂层刀具的主要失效形式为崩刃和前刀面的剥落;失效机理为高温条件下磨粒磨损、粘结磨损、扩散磨损和疲劳磨损的综合作用.
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| 关 键 词： | 粉末冶金镍基高温合金 失效机理 涂层硬质合金 干式加工 |
Failure Mechanism of Coated Carbide Tools in Milling of Nickel-base Powder Metallurgy Superalloy |
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| QIAO Yang,AI Xing,ZHAO Jun,LIU Zhan-qiang.Failure Mechanism of Coated Carbide Tools in Milling of Nickel-base Powder Metallurgy Superalloy[J].Journal of Beijing Polytechnic University,2011,37(1):1-6. |
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| Authors: | QIAO Yang AI Xing ZHAO Jun LIU Zhan-qiang |
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| Affiliation: | QIAO Yang,AI Xing,ZHAO Jun,LIU Zhan-qiang(Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE,School of Mechanical Engineering,Shandong University,Jinan 250061,China) |
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| Abstract: | Dry face milling experiments on nickel-base PM superalloy,are conducted using coated carbide tools.By the use of SEM,digital microscope and energy spectrometer,the failure morphology and mechanisms of rake face and flank face wear of carbide tools are investigated.Experimental results indicate that under the conditions,the primary failure modes of coated carbide tools are chipping and peeling off in the rake face,the failure mechanisms are abrasive,adhesion,diffusion and fatigue failure. |
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| Keywords: | nickel-base powder metallurgy superalloy failure mechanism coated carbide tool dry milling |
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