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High-Speed Rubbing Behavior of Abrasive Coating Coated on Titanium Alloy Blade Tips

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Acta Metallurgica Sinica(English Letters) 2024年第4期37卷 749-762页

作者： Wenshuang Gu Shuai Yang Shiyi Zhang Zhiliang Pei weihai xue Deli Duan Jun Gong Chao Sun Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China

In aero-engines, abrasive coatings are typically utilized to protect the blade tip from excessive wear caused by the harder abradable sealing coating and thereby improve the sealing performance of engines. Therefore, a Ni/cBN abrasive coating was prepared on titanium alloy using electrodeposition. The high-speed rubbing tests with a linear velocity of 350 m/s and different incursion rates were performed to investigate the effect of the Ni/cBN abrasive coating on the wear behavior against NiCrAl/diatomite seal coating. Results showed that melting wear and adhesive transfer occurred on the bare blades, causing the bare blade to suffer excessive wear. While the Ni/cBN abrasive coating exhibited superior wear resistance and cutting performance. The cBN grits pullout, the abrasion of Ni matrix and transfer of seal coating to the cBN grits were the main wear mechanism of the Ni/cBN abrasive coating. Additionally, it was found that the relationship between the incursion rate and high-speed rubbing behavior is quite different for the bare blade and Ni/cBN coating. The reason for the difference in wear behavior of bare blade and Ni/cBN coating at different incursion rates was discussed in detail.

关键词： Gas turbine sealing Abrasive coating High-speed rubbing Material transfer Abradable coating

Effects of Primary Carbide Size and Type on the Sliding Wear and Rolling Contact Fatigue Properties of M50 Bearing Steel

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Acta Metallurgica Sinica(English Letters) 2023年第8期36卷 1336-1352页

作者： Liqi Yang weihai xue Siyang Gao Yanfei Cao Hongwei Liu Deli Duan Dianzhong Li Shu Li Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China

The influences of primary carbide size and type on the sliding wear behavior and rolling contact fatigue (RCF) properties of M50 bearing steel were systematically investigated under oil lubrication condition. A major breakthrough was achieved in the influence of primary carbide on tribological behavior. The opposite effect brought by primary carbide size on the sliding wear resistance and RCF life of M50 bearing steel was determined. Wear resistance increased with an increase in the studied primary carbide size, whereas RCF life decreased significantly. Compared with the 0 R and R positions with a relatively small carbide size, the wear volume of the 1/2 R position with a large carbide size was the smallest. Compared with the 0 R and R positions, the L10 life of the 1/2 R position decreased by 82.7% and 84.8%, respectively. On the basis of the statistical correlation between primary carbide size and the two tribological properties, a critical maximum carbide size of 5-10 μm was proposed to achieve optimal tribological performance. This research suggests that the equivalent diameter of the primary carbide should be controlled to be smaller than 10 μm, but further decreasing primary carbide size to less than 5 μm is unnecessary. The influence of primary carbide type in M50 bearing steel on sliding wear resistance was also discussed. Results indicate that the MC-type carbides with higher elastic modulus and microhardness exhibit better wear resistance than the M2C-type carbides.

关键词： Carbide size Carbide type Sliding wear Rolling contact fatigue M50 bearing steel

Wear-resistant Ag-MAX phase 3D interpenetrating-phase composites:Processing,structure,and properties

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Nano Research 2024年第2期17卷 806-819页

作者： Yu Guo Xi Xie Zengqian Liu Longchao Zhuo Jian Zhang Shaogang Wang Qiqiang Duan Qing Jia Dake Xu weihai xue Deli Duan Filippo Berto Zhefeng Zhang Rui Yang Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China Electrobiomaterials Institute Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education)Northeastern UniversityShenyang 110819China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Department of Chemical Engineering Materials and EnvironmentSapienza University of RomeRoma 00185Italy

Electrical contact materials are generally Ag-or Cu-based composites and play a critical role in ensuring the reliability and efficiency of electrical equipments and electronic *** MAX(M is an early transition metal,A is an element from III or IV main groups,and X is carbon or/and nitrogen)phase ceramics display a unique combination of properties and may serve as an ideal reinforcement phase for electrical contact *** biological materials evolved in nature generally exhibit three-dimensional(3D)interpenetrating-phase architectures,which may offer useful inspiration for the architectural design of electrical contact ***,a series of bi-continuous Ag-Ti_(3)SiC_(2) MAX phase composites with high ceramic contents exceeding 50 vol.%and having micron-and ultrafine-scaled 3D interpenetrating-phase architectures,wherein both constituents were continuous and mutually interspersed,were exploited by pressureless infiltration of Ag melt into partially sintered Ti_(3)SiC_(2) *** mechanical and electrical properties as well as the friction and wear performance of the composites were investigated and revealed to be closely dependent on the ceramic contents and characteristic structural *** composites exhibited a good combination of properties with high hardness over 2.3 GPa,high flexural strength exceeding 530 MPa,decent fracture toughness over 10 MPa·m^(1/2),and good wear resistance with low wear rate at an order of 10^(-5)mm^(3)/(N·m),which were much superior compared to the counterparts made by powder metallurgy *** particular,the hardness,electrical conductivity,strength,and fracture toughness of the composites demonstrated a simultaneous improvement as the structure was refined from micron-to ultrafine-scales at equivalent ceramic *** good combination of properties along with the facile processing route makes the Ag-Ti_(3)SiC_(2)3D interpenetrating-phase composites appealing for electrical contact applicatio

关键词： three-dimensional(3D)interpenetrating-phase architecture Ag-MAX(M=early transition metal A=element from III or IV main groups and X=carbon or/and nitrogen)phase composites melt infiltration electrical contact materials mechanical

钛合金表面TiB2涂层与纯铝的高温黏着磨损行为

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中国表面工程 2022年第3期35卷 64-72页

作者：吴彼高禩洋薛伟海段德莉李曙中国科学院金属研究所师昌绪先进材料创新中心沈阳110016

航空发动机低压气机机匣内表面Al基封严涂层的使用,可以通过其自身的磨耗实现保护TC4叶尖的目的,但同时Al基封严涂层中以Al为主的基体材料易于大量黏着转移至TC4叶尖表面,使叶尖长度增加,影响发动机运行稳定性。采用直流脉冲磁控溅射工... 详细信息

航空发动机低压气机机匣内表面Al基封严涂层的使用,可以通过其自身的磨耗实现保护TC4叶尖的目的,但同时Al基封严涂层中以Al为主的基体材料易于大量黏着转移至TC4叶尖表面,使叶尖长度增加,影响发动机运行稳定性。采用直流脉冲磁控溅射工艺在钛合金表面沉积TiB_(2)涂层,以期实现抗Al黏着磨损目的。具有致密结构的TiB_(2)涂层在钛合金表面膜基结合临界载荷(LC4)达85.4 N。在高温销-盘摩擦磨损试验机上评价钛合金表面TiB_(2)涂层与纯铝销对摩(室温至450℃)的抗Al黏着磨损性能。与TC4基体相比较,TiB_(2)涂层可有效抑制Al的黏着转移。对摩铝销磨斑具有拖尾特征和剪切舌特征。铝销向TiB_(2)涂层表面的机械涂抹和铝销对Al黏着转移层的剪切去除作用相互竞争,共同控制Al的黏着转移行为。TiB_(2)涂层磨痕内保持低表面粗糙度可减小高温软化铝销的机械涂抹倾向。同时TiB2涂层与Al黏着转移层间优异的化学稳定性可阻碍界面反应进行,降低界面结合强度,进而促进铝销对Al黏着转移层的剪切去除作用。钛合金表面TiB2涂层通过抑制铝销机械涂抹并增强铝销对Al黏着转移层的剪切去除而获得优异的抗Al黏着磨损性能。

关键词：二硼化钛纯铝高温摩擦磨损黏着转移

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表面织构下钛合金不同周次的微动磨损行为

中国表面工程 2022年第3期35卷 73-83页

作者：王剑飞薛伟海高禩洋段德莉李曙中国科学院金属研究所辽宁省航发材料摩擦学重点实验室沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016

在航空发动机中,钛合金零部件的微动磨损不可避免。表面织构能在一定程度上减缓微动磨损,然而目前对表面织构下钛合金不同周次微动磨损行为的认识尚有不足。在TC4钛合金表面通过激光加工制备不同方向的沟槽状表面织构,随后进行不同周次... 详细信息

在航空发动机中,钛合金零部件的微动磨损不可避免。表面织构能在一定程度上减缓微动磨损,然而目前对表面织构下钛合金不同周次微动磨损行为的认识尚有不足。在TC4钛合金表面通过激光加工制备不同方向的沟槽状表面织构,随后进行不同周次的微动磨损试验。试验结果表明,在磨损的初期,有垂直方向表面织构的样品微动循环图更“瘦长”;随着磨损的进行,磨屑的分布状态发生了改变,其微动循环图变的和平行织构的样品以及无织构的样品相同。整个磨损过程随微动周次增加,分为黏着阶段和稳定阶段,垂直织构的样品上,黏着阶段又可被细分为黏着区域分散的阶段和黏着区域成片的阶段。随周次增加,磨屑的演变是由大块的磨屑层经不断被碾碎、氧化,转换成小块的磨屑,并且最终转换成细小的颗粒磨屑,被排出到磨损区域之外。研究结果对认识微动磨损行为中不同周次下表面织构的作用及磨屑的演化具有一定理论意义。

关键词：钛合金微动磨损表面织构磨损过程激光加工磨屑

稀土对GCr15轴承钢滚动接触疲劳中微点蚀的影响

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摩擦学学报 2023年第9期43卷 995-1005页

作者：李林龙吴彼薛伟海高禩洋段德莉李曙中国科学院金属研究所辽宁省航发材料摩擦学重点实验室辽宁沈阳110016

机床轴承的服役性能与各部件间的摩擦学行为紧密相关,微点蚀是轴承发生精度寿命失效时在滚道表面出现的典型损伤.本文中采用球棒试验研究了油润滑时不同接触疲劳循环周次下稀土/普通GCr15轴承钢的滚动摩擦学行为.结果表明:不管是稀土GC... 详细信息

机床轴承的服役性能与各部件间的摩擦学行为紧密相关,微点蚀是轴承发生精度寿命失效时在滚道表面出现的典型损伤.本文中采用球棒试验研究了油润滑时不同接触疲劳循环周次下稀土/普通GCr15轴承钢的滚动摩擦学行为.结果表明:不管是稀土GCr15轴承钢还是普通GCr15轴承钢,微点蚀的数量随着接触疲劳循环周次的增加而增加;不同的是,稀土GCr15轴承钢的微点蚀不仅浅而且较小较圆,普通GCr15轴承钢的微点蚀不仅深而且容易成片出现.开展的轴承台架试验也发现稀土轴承和普通轴承存在同样的微点蚀行为差别.从轴承钢的组织结构和碳化物方面讨论了稀土对微点蚀的影响,添加稀土使GCr15轴承钢中碳化物均匀地分布在基体中,有效地减少了液析碳化物的析出和大量网状碳化物的出现,从而降低了GCr15轴承钢在滚动接触疲劳中微点蚀的产生.

关键词：微点蚀 GCr15轴承钢稀土磨损机制滚动接触疲劳

油润滑条件下各向同性热解石墨/GH4169的摩擦学行为

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中国表面工程 2021年第4期34卷 107-116页

作者：陈建行高禩洋王鹏薛伟海段德莉李曙中国科学院金属研究所沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016

各向同性热解石墨由于具有优异的力学性能以及极低的孔隙率,在机械密封领域具有广泛的应用前景,但目前针对各向同性热解石墨的摩擦磨损试验开展较少。采用MMW-10环-盘端面摩擦磨损试验机,通过改变转速和载荷,对各向同性热解石墨与GH416... 详细信息

各向同性热解石墨由于具有优异的力学性能以及极低的孔隙率,在机械密封领域具有广泛的应用前景,但目前针对各向同性热解石墨的摩擦磨损试验开展较少。采用MMW-10环-盘端面摩擦磨损试验机,通过改变转速和载荷,对各向同性热解石墨与GH4169配副的摩擦学行为进行研究。结果表明:在油润滑条件下,随着转速的增加,各向同性热解石墨的摩擦因数与磨损率呈现出先减小后增加的趋势,200 r/min时获得最小值;而摩擦因数与磨损率随载荷的增加逐渐减小,2 kN时获得最小值,且载荷对磨损率的影响更加明显。各向同性热解石墨的磨损形式主要为类抛光、擦伤及犁沟。各向同性热解石墨的润滑机理与液体膜的形成以及摩擦配副表面的接触特性密切相关。揭示了各向同性热解石墨在油润滑条件下的磨损机制以及润滑机理,为其在机械密封领域的应用提供和积累了参考依据。

关键词：各向同性热解石墨油润滑条件摩擦学行为磨损机制润滑机理

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磨屑对TC4钛合金微动磨损行为的影响

摩擦学学报 2022年第5期42卷 1012-1023页

作者：王剑飞薛伟海高禩洋赵智超段德莉李曙中国科学院金属研究所辽宁省航发材料摩擦学重点实验室沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016

通过在微动循环一定周次后清除磨屑和制备表面织构储存磨屑,研究磨屑对TC4钛合金微动磨损行为的影响.结果表明:与以往认识不同,清除磨屑会导致摩擦系数和系统形变量随周次的变化曲线出现突降,最大降幅分别可达63%和41%,微动循环图也相... 详细信息

通过在微动循环一定周次后清除磨屑和制备表面织构储存磨屑,研究磨屑对TC4钛合金微动磨损行为的影响.结果表明:与以往认识不同,清除磨屑会导致摩擦系数和系统形变量随周次的变化曲线出现突降,最大降幅分别可达63%和41%,微动循环图也相应发生改变.循环一定周次后,磨屑的产生和排出重新达到平衡,摩擦系数与系统形变量又恢复到清除磨屑之前的水平.当在TC4钛合金表面制备垂直于微动方向的沟槽状表面织构后,大量的磨屑被沟槽束缚在接触区域,造成接触面之间磨屑较多,进而导致摩擦系数和系统形变量比无织构时更大,最大增幅分别可达21%和47%.收集磨屑后用扫描电子显微镜观察,发现磨屑呈松散的颗粒状,尺寸集中在0.2~1.5μm,并且多数呈现团聚状.

关键词：钛合金微动磨损磨屑表面织构沟槽状织构系统形变量

稀土改性GCr15钢与保持架材料间的滑动摩擦磨损

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材料研究学报 2023年第6期37卷 408-416页

作者：李林龙杨丽琪薛伟海高禩洋王旭段德莉李曙辽宁石油化工大学机械工程学院抚顺113005 中国科学院金属研究所辽宁省航发材料摩擦学重点实验室沈阳110016

进行环/块实验,研究了在脂润滑条件下稀土改性的GCr15轴承钢与胶木保持架材料间的滑动摩擦学行为,并与普通GCr15轴承钢进行了对比。结果表明:虽然稀土GCr15钢与胶木材料间的摩擦系数较大,但是其磨损体积却比普通GCr15钢的小。两种轴承... 详细信息

进行环/块实验,研究了在脂润滑条件下稀土改性的GCr15轴承钢与胶木保持架材料间的滑动摩擦学行为,并与普通GCr15轴承钢进行了对比。结果表明:虽然稀土GCr15钢与胶木材料间的摩擦系数较大,但是其磨损体积却比普通GCr15钢的小。两种轴承钢材料的去除都以磨粒磨损为主,且随着转速的提高磨损体积减小。稀土GCr15钢的磨痕表面只出现犁沟,而普通GCr15钢除了出现磨粒磨损中塑性去除的犁沟,剥落也比较多。从碳化物、非金属夹杂物和残余奥氏体等方面,研究了GCr15钢经稀土改性后的组织改善对其使役行为的影响。结果表明,虽然稀土改性在一定程度上降低了轴承钢的硬度,但却有效地抑制了GCr15轴承钢在服役中出现的磨粒磨损中的断裂去除机制——材料剥落,从而提高了其在滑动摩擦条件下的耐磨损性能。

关键词：金属材料稀土改性 GCr15钢滑动摩擦磨损机制