| Cutting Depth Control in Turning as a Tool for Steel Surface Engineering: Microstructural, Mechanical, and Corrosion Performance Correlations |
| کد مقاله : 1219-ICME (R1) |
| نویسندگان |
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سید احسان افتخاری شهری *1، پوریا قنبرزاده جهرمی2، سید محمدرضا سدهای3 1گروه مهندسی مکانیک- دانشگاه صنعتی بیرجند 2دانشجوی کارشناسی دانشکده مهندسی مکانیک و مواد، دانشگاه صنعتی بیرجند 3دانشجوی دکتری دانشکده مهندسی مکانیک، پردیس فنی، دانشگاه تهران |
| چکیده مقاله |
| This study investigates the influence of cutting depth variation during the turning process on the surface integrity, mechanical properties, and microstructural characteristics of steel. Cylindrical steel specimens were machined under three different cutting depths, and their surface performance was systematically evaluated using hardness, wear, corrosion, and X-ray diffraction (XRD) analyses. The primary aim was to establish a clear relationship between machining parameters and surface characteristics to guide optimal process design. Results indicated that increasing the cutting depth to an optimal value significantly improved surface hardness, rising from 205 HV in the unmachined sample to 247 HV at the optimal condition. This enhancement is primarily attributed to the formation of strain-hardened layers and dynamic grain refinement induced by severe plastic deformation during machining. Wear tests showed a corresponding reduction in material loss from 14 mg to 9 mg, reflecting improved resistance due to microstructural refinement and favorable redistribution of surface residual stresses. Corrosion evaluations revealed a substantial decrease in corrosion rate from 0.091 to 0.021 mm/year, indicating enhanced surface stability and formation of a uniform passive layer. XRD analysis further confirmed a reduction in crystallite size and an increase in microstrain, validating the occurrence of grain refinement and surface strengthening mechanisms. Overall, the findings demonstrate that controlled adjustment of cutting depth is a critical factor in steel surface engineering. Optimizing this parameter can substantially enhance both mechanical and functional surface properties, providing an effective strategy for improving the performance and durability of steel components in demanding industrial applications. |
| کلیدواژه ها |
| Surface engineering; Turning; Cutting depth; Wear and corrosion; XRD |
| وضعیت: پذیرفته شده برای ارائه شفاهی |
