التفاصيل البيبلوغرافية
| العنوان: |
Atomic-scale frictional behavior of nickel-based single-crystal alloys under different modulation cycles. |
| المؤلفون: |
Wu, Zhuo, Feng, Xingzhi, Zheng, Min, Zhu, Zongxiao, Chen, Jiao, Song, Bo |
| المصدر: |
Applied Physics A: Materials Science & Processing; May2024, Vol. 130 Issue 5, p1-16, 16p |
| مصطلحات موضوعية: |
MOLECULAR dynamics, ATOMIC displacements, ALLOYS, DISLOCATION density, SURFACE roughness |
| مستخلص: |
In order to systematically study the effect of different modulation periods on the friction and wear behavior of nickel-based single-crystal superalloy materials during micromotion wear, molecular dynamics methods were used to establish models of nickel-based single-crystal alloys with different modulation periods. The atomic displacement, wear marks, surface morphology, temperature, stress, dislocations, and dislocation density during the friction process were studied. The study found that as the modulation period decreases, the atomic displacements on the surface and subsurface of the workpiece increase, the wear track depth decreases, the debris is more prone to accumulate on both sides of the abrasive ball, the surface roughness of the wear track region increases. In contrast, the surface roughness of the unworked region decreases. The temperature of the workpiece increases, and the stress values of the system become higher. Moreover, the number of defects and dislocation density in the subsurface of the workpiece are higher. This article has important significance and reference value for determining the suitable working environment and accurately predicting the life of nickel-based single crystal superalloy materials. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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