MICROSTRUCTURAL CHARACTERIZATION OF TI-6AL-4V SUBJECTED TO FRETTING

机译：微动作用下TI-6AL-4V的组织结构表征

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This study is focused on characterization of microstructural changes linked to deformation and crack formation mechanisms in duplex Ti-6Al-4V specimens used in displacement controlled fretting only experiments. In particular, the effect of slip displacement amplitude and number of fretting cycles on the evolution of grain morphology, grain orientation, misorientation distribution, composition, and microhardness is investigated using electron backscatter diffraction (EBSD), energy dispersive X-ray analysis (EDX) and nanoindentation. A strong basal microtexture and significant oxygen diffusion were observed in the Ti-6Al-4V specimen that exhibited the most significant cracking. A critical slip amplitude threshold may exist for which a combination of mechanisms such as plastic deformation, grain reorientation, and oxygen diffusion occur during fretting that make conditions ideal for crack formation. The results provide insights for development and validation of computational crystal plasticity models with application to fretting and sliding contact problems. New fretting damage assessment measures have also been identified and have application for components that suffer from fretting wear and/or fatigue related failures.

机译：这项研究的重点是与仅用于位移控制微动实验的双相Ti-6Al-4V标本中与变形和裂纹形成机制相关的微观结构变化的表征。特别是，使用电子背散射衍射（EBSD），能量色散X射线分析（EDX）研究了滑移位移幅度和微动循环次数对晶粒形态，晶粒取向，取向差分布，组成和显微硬度的演变的影响。和纳米压痕。在Ti-6Al-4V试样中观察到了强烈的基底微结构和明显的氧扩散，该试样表现出最明显的开裂。可能存在临界滑动幅度阈值，为此在微动过程中会发生诸如塑性变形，晶粒重新定向和氧扩散等机制的组合，从而使裂纹形成的条件更为理想。结果为开发和验证计算晶体可塑性模型及其对微动和滑动接触问题的应用提供了见识。还已经确定了新的微动磨损评估方法，并将其应用于遭受微动磨损和/或疲劳相关故障的部件。

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来源
《American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US)》|2004年|P.197-206|共10页
会议地点 Long BeachCA(US)
作者
Dana R. Swalla; Richard W. Neu; David L. McDowell;
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作者单位

General Electric Global Research, One Research Circle, Niskayuna, NY 12309;

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原文格式 PDF
正文语种 eng
中图分类机械摩擦、磨损与润滑;
关键词
fretting; Ti-6Al-4V; titanium; electron diffraction; texture; microstructure;

机译：微动; Ti-6Al-4V;钛;电子衍射;织构;显微组织;

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专利

1. Microstructural characterization of Ti-6Al-4V subjected to fretting [J] . Swalla DR, Neu RW, McDowell DL Journal of Tribology . 2004,第4期

机译：微动磨损的Ti-6Al-4V的显微组织表征
2. Microstructural Characterization and Mechanical Properties of Ti-6Al-4V Alloy Subjected to Dynamic Plastic Deformation Achieved by Multipass Hammer Forging with Different Forging Temperatures [J] . Xiurong Fang, Jiang Wu, Xue Ou, Advances in materials science and engineering . 2019,第9期

机译：用不同锻造温度实现Ti-6Al-4V合金的微结构表征和机械性能，用不同锻造温度锻造锻造动态塑性变形
3. Microstructural characterization of Ti-6Al-4V alloy subjected to the duplex SMAT/plasma nitriding [J] . Pi Y., Faure J., Agoda-Tandjawa G., Microscopy research and technique . 2013,第9期

机译：Ti-6Al-4V合金经双重SMAT /等离子渗氮处理后的显微组织表征
4. MICROSTRUCTURAL CHARACTERIZATION OF Ti-6Al-4V SUBJECTED TO FRETTING [C] . Dana R. Swalla, Richard W. Neu, David L. McDowell ASME/STLE International Joint Tribology Conference . 2004

机译：TI-6AL-4V受到烦恼的微观结构表征
5. Microstructural characterizations and modeling of Ti-6Al-4V parts made by electron beam additive manufacturing (EBAM). [D] . Gong, Xibing. 2014

机译：电子束增材制造（EBAM）制成的Ti-6Al-4V零件的显微组织表征和建模。
6. Microstructural Modeling and Strengthening Mechanism of TiB/Ti-6Al-4V Discontinuously-Reinforced Titanium Matrix Composite [O] . Shuai Zhao, Yangjian Xu, Changliang Pan, 2019

机译：TiB / Ti-6Al-4V间断增强钛基复合材料的组织建模与强化机理
7. Microstructural Characterization and Mechanical Properties of Ti-6Al-4V Alloy Subjected to Dynamic Plastic Deformation Achieved by Multipass Hammer Forging with Different Forging Temperatures [O] . Xiurong Fang, Jiang Wu, Xue Ou, 2019

机译：用不同锻造温度实现Ti-6Al-4V合金的微结构表征和机械性能，用不同锻造温度锻造
8. Mechanical and Microstructural Effects in Fretting Fatigue of Ti-6Al-4V [R] . Conner, B. P. 2000

机译：Ti-6al-4V微动疲劳的力学和微观结构效应

MICROSTRUCTURAL CHARACTERIZATION OF TI-6AL-4V SUBJECTED TO FRETTING

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