初步热处理对无涂层激光冲击强化 AMg6 合金结构和残余应力形成的影响

IF 0.7 4区物理与天体物理 Q4 OPTICS

Journal of Russian Laser Research Pub Date : 2024-05-31 DOI:10.1007/s10946-024-10207-4

I. A. Bakulin, S. I. Kuznetsov, A. S. Panin, E. Yu. Tarasova, S. I. Yaresko, V. A. Novikov

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引用次数: 0

摘要

我们考虑了无涂层激光冲击强化（LSPwC）在初步热退火前后对厚度为 4 至 14 毫米的 AMg6 铝合金的结构和应力状态的影响。确定了 LSPwC 后的粗糙度参数 Ra 和 Rz。研究发现压缩残余应力 (CRS) 的大小、深度和轮廓取决于材料的厚度和初步热处理。逐层 X 射线衍射分析表明，加工样品的晶体结构参数与残余应力剖面之间存在相关性。我们发现 CRS 区域的晶格发生了同源畸变，并观察到在样品未加工的一面形成了显著的（高达 - 100 兆帕）残余应力。此外，我们还确定了双单侧和双侧加工的表面 CRS 量级。

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Effect of Preliminary Heat Treatment on the Formation of Structure and Residual Stresses in the AMg6 Alloy at Laser Shock Peening Without Coating

We consider the effect of laser shock peening without coating (LSPwC) on the structure and stress state of the AMg6 Aluminum alloy with a thickness from 4 to 14 mm before and after preliminary thermal annealing. The roughness parameters R_a and R_z after LSPwC are determined. The magnitude, depth, and profile of compressive residual stresses (CRS) are found to depend on the thickness of the material and preliminary heat treatment. The layer-by-layer X-ray diffraction analysis shows a correlation between the parameters of the crystal structure and the profile of residual stresses for the processed samples. We find homological distortions of the crystal lattice in the CRS zone and observe the formation of significant (up to - 100 MPa) residual stresses on the unprocessed side of the samples. Also, we determine the surface CRS magnitudes for double unilateral and bilateral processing.

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来源期刊

Journal of Russian Laser Research 物理-光学

CiteScore

1.50

自引率

22.20%

发文量

审稿时长

2 months

期刊介绍： The journal publishes original, high-quality articles that follow new developments in all areas of laser research, including: laser physics; laser interaction with matter; properties of laser beams; laser thermonuclear fusion; laser chemistry; quantum and nonlinear optics; optoelectronics; solid state, gas, liquid, chemical, and semiconductor lasers.