首页|Effect of rolling-texture intensity on fretting damage and subsurface deformation behavior in a high-strength titanium alloy

Effect of rolling-texture intensity on fretting damage and subsurface deformation behavior in a high-strength titanium alloy

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Fretting damage is common in the high-strength titanium alloy fastener widely used in the aeronautic industry,leading to the failure of fastening fit or the initiation of crack.The titanium alloy fasteners often have typical preferred orientation characteristics(i.e.,texture),and this is one of the important factors affecting its performance.However,the investigations on the mechanism of β rolling-texture intensity on fretting damage resistance and subsurface deformation are less addressed.Hence,fretting wear tests were carried out on samples with different rolling texture intensities.The results demonstrate that the samples with quite low(A-10％sample)and quite high(D-70％sample)rolling-texture intensity both exhibit excellent fretting wear resistance,but their mechanisms are completely different.Uniformly dis-persed grain orientation renders the A-10％sample with good recovery ability and a positive friction effect during wear.Low stress only concentrating at grain boundaries(GBs)weakens cracks'initiation and propagation.The unique orientation-layered structure(OLS)leads to excellent recovery ability and a positive friction effect.Crack propagation is inhibited and only propagates along the OLS boundary with-out a connected trend.However,samples with moderate rolling texture intensity exhibit severe wear.Dislocations are restricted in local areas,so the poor recovery ability makes them have a negative friction effect.Crack propagation driving force continuously increases.Appropriate rolling texture intensity can reduce wear by three times.This study can provide information on the principle for designing fretting damage-resistant alloys.

High-strength titanium alloyRolling-texture intensityFretting wearSubsurface deformation

Yanlin Tong、Ke Hua、Linghong Sun、Haoyang Xie、Mingqi Zhao、Long Zhou、Hongxing Wu、Haifeng Wang

展开 >

State Key Laboratory of Solidification Processing,Center of Advanced Lubrication and Seal Materials,Northwestern Polytechnical University,Xi'an 720072,China

National Natural Science Foundation of ChinaResearch Fund of the State Key Laboratory of Solidification Processing(NPU),ChinaFundamental Research Funds for the Central Universities of China

521052112023-TS-043102019JC001

2024

10.1016/j.jmst.2024.01.060

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.196(29)