## 1 Introduction
[50] developed an F.E.A. model of the Effect of the minimum quantity lubrication (M.Q.L.) machining process to simulate cutting force and chip formation; the J-C constitutive constant of Ti6 Al4V proposed was from [PERSON] et al. [40]. Thus, different serrated chip morphology, cutting forces, and cutting temperatures are obtained when various constitutive parameters are used for numerical and simulation analyses. Additionally, note that the mechanical properties of additively manufactured (A.M.) Ti6 Al4V are entirely different from traditional casting Ti6 Al4V [51; 52]. This also implies that the J-C constitutive of additively manufactured Ti6 Al4V is significantly different from traditional casting. Therefore, the traditional \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Source** & _A/MPa_ & _B/MPa_ & \(n\) & \(C\) & \(m\) & _\(\dot{\epsilon}_{0}\)_ & **Method** \\ \hline Johnson [30] & 862.5 & 331.2 & 0.34 & 0.012 & 0.8 & 1 & Split hopkinson pressure bar (SHPB) \\ [PERSON] et al. [32] & 881 & 468 & 0.122 & 0.039 & 0.7 & / & / \\ [PERSON] et al. [28] & 724.7 & 683.1 & 0.47 & 0.035 & 1.0 & \(10^{-5}\) & SHPB \\ [PERSON] et al. [33] & 782.7 & 498.4 & 0.28 & 0.028 & 1.0 & \(10^{-5}\) & SHPB \\ [PERSON] et al. [29] & 1098 & 1092 & 0.93 & 0.014 & 1.1 & / & SHPB \\ [PERSON] et al. [34] & 997.9 & 653.1 & 0.45 & 0.0198 & 0.7 & 1 & SHPB \\ [PERSON] et al. [35] & 1080 & 1007 & 0.5975 & 0.01304 & 0.7701 & 1 & SHPB \\ [PERSON] et al. [15] & 968 & 380 & 0.421 & 0.0197 & 0.577 & 0.1 & SHPB \\ [PERSON] et al. [25] & 803.85 & 544.57 & 0.36166 & 0.05 & 1.041 & / & Numerical method \\ [PERSON] et al. [25] & 883.99 & 598.87 & 0.36166 & 0.0335 & 1.041 & / & Numerical method \\ [PERSON] et al. [25] & 987.8 & 761.5 & 0.41433 & 0.01516 & 1.516 & / & Numerical method \\ [PERSON] [36] & 983 & 348 & 0.32 & 0.024 & 0.69 & 0.1 & Inverse method \\ [PERSON] et al. [37] & 896.0 & 656.0 & 0.5 & 0.0128 & 0.8 & 1 & SHPB \\ [PERSON] et al. [38] & 880 & 695 & 0.36 & 0.04 & 0.8 & 1 & shear compression specimen (SCS) \\ [PERSON] et al. [39] & 856.41 & 840.26 & 0.880 & 0.11 & 0.663 & 1 & / \\ [PERSON] et al. [40] & 870 & 990 & 1.01 & 0.008 & 1.4 & 1 & SHPB \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Johnson-Cook constitutive parameters for Ti6 Al4V and experimental conditions. J-C constitutive parameters used to simulate the additive manufacturing Ti6 Al4V process will also reduce the reliability of the results. Therefore, it is necessary to analyze the simulation errors due to differences in the J-C parameters. [PERSON] et al. [53] presented the influence of constitutive parameters on the simulation results of Ti6 Al4V, including J-C constitutive parameters, damage parameters, and damage failure parameters. [PERSON] et al. [54] conducted a shear localization sensitivity analysis for the Johnson-Cook constitutive parameters on serrated chips during the high-speed machining of Ti6 Al4V. [PERSON] performed simulations of high-speed machining Ti6 Al4V using J-C constitutive methods proposed by [PERSON] et al. [33], [PERSON] et al., [PERSON] et al. [35], and [PERSON] et al. [34]. The results indicated that the parameters of the constitutive model proposed by [PERSON] et al. are more accurate and the cutting force is closer to the real parameters [32]. [PERSON] et al. [55] analyzed the influence of the material characteristics (strain softening, thermal softening, etc.) and machining parameters on the cutting forces and chip morphology. [PERSON] et al. [56] performed Simulation of Machining Ti-6 Al-4V Titanium Alloy using J-C constitutive methods proposed by [PERSON] et al. [33], [PERSON] [30], and [PERSON] et al. [28]. Their research results found that [PERSON]'s model is not found suitable for FE simulations. These do not consider the influence of the J-C constitutive parameters in the micro-cutting process.