Investigation of surface integrity in inconel 718 enhanced by heat treatment, ultrasonic impact and multi-media jet processing.

sysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$F = \frac{{M{S_{factor}}}}{{M{S_E}}}$$\end{document} Significance is judged by the p-value: P < 0.05: significant, P < 0.01: highly significant, P ≥ 0.05: not significant.

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