激光冲击强化诱导残余应力场下的裂纹扩展

IF 0.4 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Russian Physics Journal Pub Date : 2024-09-23 DOI:10.1007/s11182-024-03267-1

A. N. Vshivkov, A. Yu. Iziumova, E. A. Gachegova, M. L. Bartolomei, O. A. Plekhov, M. V. Ugolnikov, A. V. Ilinykh, V. E. Wildemann

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引用次数: 0

摘要

研究了 TC4 钛合金试样在激光冲击强化（LSP）后残余应力场中的疲劳裂纹动力学。然后进行了疲劳试验。结果发现，经过 LSP 处理后的试样疲劳寿命延长了。通过数值模拟确定了在疲劳循环中补偿残余应力效应的最大作用力。这就确定了 LSP 产生的压缩残余应力场仍然有效的作用力范围。

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Crack Propagation Under Residual Stress Field Induced by Laser Shock Peening

The fatigue crack kinetics in the residual stress field is investigated in the specimens of TC4 titanium alloy after their laser shock peening (LSP). Following this treatment, the fatigue tests are carried out. The fatigue life of the specimens after LSP is found to increase. The maximum applied force in the fatigue cycle, which compensates for the residual stress effect, is determined by a numerical simulation. This determines the range of applied forces within which the compressive residual stress field generated by LSP remains effective.

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来源期刊

Russian Physics Journal PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

50.00%

发文量

208

审稿时长

3-6 weeks

期刊介绍： Russian Physics Journal covers the broad spectrum of specialized research in applied physics, with emphasis on work with practical applications in solid-state physics, optics, and magnetism. Particularly interesting results are reported in connection with: electroluminescence and crystal phospors; semiconductors; phase transformations in solids; superconductivity; properties of thin films; and magnetomechanical phenomena.