## 3 Results, Analysis, and Discussion
### Analysis and Discussion
(a) Multiple interval plot with groups: type of cooling system type, \(C\); Location Regarding Insert, \(LRI\); Location Regarding Specim, \(LRS\). This comparison is possible because the studies are part of the same project and have been designed following a comparable methodology based on [PERSON] [59]. Below, the data was obtained by [PERSON] and his collaborators [18] in the test of Mg-Ti-Mg specimens, in which the magnesium alloy is identical to the one used in this study, UNS M11917 (AZ91D) and whose composition was already shown in Table 3, and the titanium alloy is UNS R56400 (Ti-6 Al-4V) whose composition is shown in Table 7.  
Table 8 includes the experimental plan followed, Table 9 details the _Ra_ obtained values in the tests, Table 10 shows the result of the analysis of variance for the obtained values, factors, and levels, and Table 11 shows the percentages of the variability of each factor according to the results of the ANOVA. Tables 8-11 were adapted from [18] following the structure defined in this work to facilitate the comparison of the results. \begin{table}
\begin{tabular}{c} \hline
**UNS R56400 (Ti-6 Al-4V)** \\ \hline Al 5.5–6.75\% \\ C \(\leq\) 0.08\% \\ H \(\leq\) 0.015\% \\ Fe \(\leq\) 0.4\% \\ N \(\leq\) 0.03\% \\ O \(\leq\) 0.2\% \\ Ti 87.725–91\% \\ Zn 3.5–4.5\% \\ \hline \end{tabular}
\end{table} 
Table 7: Chemical composition of UNS R56400 (Ti-6 Al-4V) specimens. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline
**Test No.** & **1** & **2** & **3** & **4** & **5** & **6** & **7** & **8** \\ \hline \multirow{6}{*}{_LRI/LRS1_} & _LRI1/LRS1_ & _LRI1/LRS1_ & _LRI1/LRS1_ & _LRI1/LRS1_ & _LRI1/LRS1_ & _LRI1/LRS1_ & _LRI1/LRS1_ \\  & _LRI1/LRS2_ & _LRI1/LRS2_ & _LRI1/LRS2_ & _LRI1/LRS2_ & _LRI1/LRS2_ & _LRI1/LRS2_ & _LRI1/LRS2_ & _LRI1/LRS2_ \\  & _LRI2/LRS1_ & _LRI2/LRS1_ & _LRI2/LRS1_ & _LRI2/LRS1_ & _LRI2/LRS1_ & _LRI2/LRS1_ & _LRI2/LRS1_ & _LRI2/LRS1_ \\  & _LRI2/LRS2_ & _LRI2/LRS2_ & _LRI2/LRS2_ & _LRI2/LRS2_ & _LRI2/LRS2_ & _LRI2/LRS2_ & _LRI2/LRS2_ & _LR2/LRS2_ \\  & _LRI3/LRS1_ & _LRI3/LRS1_ & _LRI3/LRS1_ & _LRI3/LRS1_ & _LRI3/LRS1_ & _LRI3/LRS1_ & _LRI3/LRS1_ & _LRI3/LRS1_ & _LRI3/LRS1_ \\  & _LRI3/LRS2_ & _LRI3/LRS2_ & _LRI3/LRS2_ & _LRI3/LRS2_ & _LRI3/LRS2_ & _LRI3/LRS2_ & _LRI3/LRS2_ & _LR3/LRS2_ \\ \multirow{2}{*}{Type of tool, _T_} & \(T\) & \(T\) & \(T\) & \(T\) & \(T\) & \(T\) & \(T\) & \(T\) & \(T\) \\  & \(V\) (m/min) & _V1_ & _V1_ & _V2_ & _V2_ & _V1_ & _V1_ & _V2_ & _V2_ \\ \multirow{2}{*}{Feed rate,\(f\) (mm/min)} & _f2_ & _f1_ & _f2_ & _f1_ & _f2_ & _f1_ & _f2_ & _f1_ \\ \hline \end{tabular}
\end{table} 
Table 8: Mg-Ti-Mg specimen experimental design: product of a full factorial 2\({}^{3}\) and a block of two factors. \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline
**Test No.** & **1** & **2** & **3** & **4** & **5** & **6** & **7** & **8** & _AV_ & _STD_ \\ \hline _LRI1/LRS1_ & _Ra_ (\(\mu\)m) & 0.36 & 1.23 & 0.10 & 1.73 & 1.59 & 1.73 & 0.68 & 2.62 & 1.38 & 0.75 \\ _LRI1/LRS2_ & _Ra_ (\(\mu\)m) & 1.73 & 0.31 & 0.87 & 1.54 & 0.77 & 0.37 & 0.45 & 1.65 & 0.85 & 0.51 \\ _LRI2/LRS1_ & _Ra_ (\(\mu\)m) & 1.28 & 0.74 & 0.86 & 0.86 & 0.80 & 1.60 & 1.11 & 1.19 & 1.02 & 0.28 \\ _LRI2/LRS2_ & _Ra_ (\(\mu\)m) & 3.09 & 1.46 & 0.89 & 1.34 & 0.85 & 1.03 & 0.87 & 1.34 & 1.11 & 0.24 \\ _LRI3/LRS2_ & _Ra_ (\(\mu\)m) & 1.52 & 1.91 & 0.78 & 0.64 & 0.83 & 1.81 & 0.61 & 1.63 & 1.17 & 0.54 \\ _LRI3/LRS2_ & _Ra_ (\(\mu\)m) & 2.28 & 6.28 & 1.09 & 1.94 & 1.43 & 1.79 & 1.28 & 1.78 & 2.23 & 1.68 \\ Type of tool, \(T\) & _A11253_ & _A11253_ & _A11253_ & _A11253_ & _A11240_ & _A11240_ & _A11240_ & _A11240_ & _A11240_ \\ \multirow{2}{*}{\(V\) (m/min)} & _20_ & _20_ & _25_ & _25_ & _20_ & _20_ & _25_ & _25_ & _25_ & _25_ \\  & _50_ & _100_ & _50_ & _100_ & _50_ & _100_ & _50_ & _100_ & & & \\ \hline Av & 1.71 & 1.99 & 0.77 & 1.34 & 1.05 & 1.39 & 0.83 & 1.70 & & \\ STD & 0.84 & 1.99 & 0.31 & 0.46 & 0.33 & 0.53 & 0.29 & 0.46 & & \\ \hline \end{tabular}
\end{table} 
Table 9: Mg-Ti-Mg test.