Characterization of Laser-Peened Materials by Synchrotron Radiation and Neutron Diffraction Techniques

Y. SANO; M. OBATA; K. AKITA; K. MASAKI; Y. OCHI; H. SUZUKI; M. SATO; K. KAJIWARA

doi:10.11395/jjsem.7.s61

論文

Characterization of Laser-Peened Materials by Synchrotron Radiation and Neutron Diffraction Techniques

Y. SANO, M. OBATA, K. AKITA, K. MASAKI, Y. OCHI, H. SUZUKI, M. SATO, K. KAJIWARA

著者情報

キーワード: Laser peening, Synchrotron radiation, Neutron, Diffraction, Residual stress, Micro tomography, Imaging, Fatigue crack

ジャーナルフリー

2007 年 7 巻 Special_Issue 号 p. s61-s67

DOI https://doi.org/10.11395/jjsem.7.s61

詳細

抄録

The effect of low energy laser peening (LP) without coating has been studied on metallic materials. A highly penetrable neutron beam was used to evaluate the overall distribution of residual stress. Compression in the top surface and its thermal stability were non-destructively confirmed through precise experiments with synchrotron radiation. The three-dimensional (3D) image of fatigue cracks was clearly reconstructed by micro tomography (μCT) with phase contrast technique. It was shown that the growth of the cracks was retarded for the laser-peened materials.

責任著者(Corresponding author)

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