Performance of TiSiN/TiAlN-Coated Carbide Tools in Slot Milling of Hastelloy C276 with Various Cooling Strategies
Nickel-based superalloy Hastelloy C276 is widely used in high-performance industries due to its strength, corrosion resistance, and thermal stability. However, these same properties pose substantial challenges in machining, resulting in high tool wear, surface defects, and dimensional inaccuracies....
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MDPI AG
2025-07-01
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| author | Ly Chanh Trung Tran Thien Phuc |
| author_facet | Ly Chanh Trung Tran Thien Phuc |
| author_sort | Ly Chanh Trung |
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| description | Nickel-based superalloy Hastelloy C276 is widely used in high-performance industries due to its strength, corrosion resistance, and thermal stability. However, these same properties pose substantial challenges in machining, resulting in high tool wear, surface defects, and dimensional inaccuracies. This study investigates methods to enhance machining performance and surface quality by evaluating the tribological behavior of TiSiN/TiAlN-coated carbide inserts under six cooling and lubrication conditions: dry, MQL with coconut oil, Cryo-LN<sub>2</sub>, Cryo-LCO<sub>2</sub>, MQL–Cryo-LN<sub>2</sub>, and MQL–Cryo-LCO<sub>2</sub>. Open-slot finishing was performed at constant cutting parameters, and key indicators such as cutting zone temperature, tool wear, surface roughness, chip morphology, and microhardness were analyzed. The hybrid MQL–Cryo-LN<sub>2</sub> approach significantly outperformed other methods, reducing cutting zone temperature, tool wear, and surface roughness by 116.4%, 94.34%, and 76.11%, respectively, compared to dry machining. SEM and EDS analyses confirmed abrasive, oxidative, and adhesive wear as the dominant mechanisms. The MQL–Cryo-LN<sub>2</sub> strategy also lowered microhardness, in contrast to a 39.7% increase observed under dry conditions. These findings highlight the superior performance of hybrid MQL–Cryo-LN<sub>2</sub> in improving machinability, offering a promising solution for precision-driven applications. |
| format | Article |
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| language | English |
| publishDate | 2025-07-01 |
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| spelling | doaj-art-dda25e8ffaa74d45aa66da9970930be42025-07-25T13:28:30ZengMDPI AGLubricants2075-44422025-07-0113731610.3390/lubricants13070316Performance of TiSiN/TiAlN-Coated Carbide Tools in Slot Milling of Hastelloy C276 with Various Cooling StrategiesLy Chanh Trung0Tran Thien Phuc1Mechanical Engineering Laboratory, Faculty of Mechanical Engineering, Cao Thang Technical College (CTTC), 65 Huynh Thuc Khang Street, Ben Nghe Ward, District 1, Ho Chi Minh City 700000, VietnamDepartment of Machine Design, Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, Ward 14, District 10, Ho Chi Minh City 700000, VietnamNickel-based superalloy Hastelloy C276 is widely used in high-performance industries due to its strength, corrosion resistance, and thermal stability. However, these same properties pose substantial challenges in machining, resulting in high tool wear, surface defects, and dimensional inaccuracies. This study investigates methods to enhance machining performance and surface quality by evaluating the tribological behavior of TiSiN/TiAlN-coated carbide inserts under six cooling and lubrication conditions: dry, MQL with coconut oil, Cryo-LN<sub>2</sub>, Cryo-LCO<sub>2</sub>, MQL–Cryo-LN<sub>2</sub>, and MQL–Cryo-LCO<sub>2</sub>. Open-slot finishing was performed at constant cutting parameters, and key indicators such as cutting zone temperature, tool wear, surface roughness, chip morphology, and microhardness were analyzed. The hybrid MQL–Cryo-LN<sub>2</sub> approach significantly outperformed other methods, reducing cutting zone temperature, tool wear, and surface roughness by 116.4%, 94.34%, and 76.11%, respectively, compared to dry machining. SEM and EDS analyses confirmed abrasive, oxidative, and adhesive wear as the dominant mechanisms. The MQL–Cryo-LN<sub>2</sub> strategy also lowered microhardness, in contrast to a 39.7% increase observed under dry conditions. These findings highlight the superior performance of hybrid MQL–Cryo-LN<sub>2</sub> in improving machinability, offering a promising solution for precision-driven applications.https://www.mdpi.com/2075-4442/13/7/316open slot millingminimum quantity lubricationcryogenic machininghybrid cooling-lubricationmachined surface texturecutting tool degradation |
| spellingShingle | Ly Chanh Trung Tran Thien Phuc Performance of TiSiN/TiAlN-Coated Carbide Tools in Slot Milling of Hastelloy C276 with Various Cooling Strategies Lubricants open slot milling minimum quantity lubrication cryogenic machining hybrid cooling-lubrication machined surface texture cutting tool degradation |
| title | Performance of TiSiN/TiAlN-Coated Carbide Tools in Slot Milling of Hastelloy C276 with Various Cooling Strategies |
| title_full | Performance of TiSiN/TiAlN-Coated Carbide Tools in Slot Milling of Hastelloy C276 with Various Cooling Strategies |
| title_fullStr | Performance of TiSiN/TiAlN-Coated Carbide Tools in Slot Milling of Hastelloy C276 with Various Cooling Strategies |
| title_full_unstemmed | Performance of TiSiN/TiAlN-Coated Carbide Tools in Slot Milling of Hastelloy C276 with Various Cooling Strategies |
| title_short | Performance of TiSiN/TiAlN-Coated Carbide Tools in Slot Milling of Hastelloy C276 with Various Cooling Strategies |
| title_sort | performance of tisin tialn coated carbide tools in slot milling of hastelloy c276 with various cooling strategies |
| topic | open slot milling minimum quantity lubrication cryogenic machining hybrid cooling-lubrication machined surface texture cutting tool degradation |
| url | https://www.mdpi.com/2075-4442/13/7/316 |
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