ریزساختار و خواص مکانیکی فولاد A283 رویه کاری شده توسط اینکونل 625 و فولاد 347 به روش GTAW

نوع مقاله : علمی و پژوهشی

نویسنده

• فرهاد استوان

گروه مهندسی مواد، دانشگاه آزاد اسلامی، واحد بندرعباس، بندرعباس، هرمزگان، ایران.

10.22067/jmme.2021.69260.1006

چکیده

در این تحقیق، تاثیر لایه نشانی پوششی دوگانه برروی خواص ریزساختاری و مکانیکی زیرلایه‌های فولاد A283 مورد مطالعه قرار گرفته‌است. از دو نوع فلز پر کننده ی مختلف از جنس فولاد زنگ‌نزن 347 و اینکونل 625 به منظور پوشش‌دهی با بکارکیری فرایند جوش قوسی تنگستن-گاز1 (GTAW) استفاده شد و به‌کمک آزمون‌های میکروسکوپی و مکانیکی خواص روکش حاصل مورد بررسی قرار گرفت. مشاهدات میکروسکوپی نشان داد، در جایی که یک لایه روکش اعمال شد، به‌دلیل نرخ انجماد بالا، ریزساختار به‌شکل دندریت‌های ستونی در آمد. با اعمال لایه دوم، مورفولوژی دندریتی ستونی در لایه اول تغییر یافت و به حالت دندریتهای سوزنی و جزیره‌ای درآمد. طیف سنجی پراکندگی انرژی پرتو ایکس2 (EDS) حضور رسوبات کاربیدی را در هر دو نوع پوشش تایید کرد. آزمون اسکن خطی نشان داد، تغییرات غلظت شیمیایی عناصر از زیرلایه به‌سمت پوشش 347 و سپس پوشش 625 با شیب ملایمی صورت گرفت و در مقابل، با بکارگیری آلیاژ 625 برروی زیرلایه و بدون لایه واسط 347، تغییرات غلظت عناصر زیاد بود. نتایج آزمون سختی‌سنجی و سایش نشان داد که بیشترین میزان سختی و مقاومت به سایش متعلق به روکش اینکونل 625 است. در قیاس با سختی و مقاومت به سایش زیر لایه ی فولاد A283، اعمال روکش اینکونل 625 سبب افزایش سختی در حدود 41% و بهبود مقاومت به سایش تا حدود 5/3 برابر زیر لایه ی فولاد A283 گردید. همچنین اعمال یک لایه روکش 347 برروی زیرلایه سبب بهبود سختی به میزان حدود 18% و مقاومت به سایش تا حدود 7/1 برابر گردید.

کلیدواژه‌ها

• جوشکاری GTAW
• فولاد A283
• روکشکاری
• اینکونل 625
• فولاد زنگ نزن 347

20.1001.1.20087462.1400.33.1.9.3

موضوعات

• متالورژی سطوح و پوشش

---

عنوان مقاله [English]

Microstructure and Mechanical Properties of A283 Steel Coated by Inconel 625 and 347 Steel Using GTAW

نویسنده [English]

• Farhad Ostovan

Department of Material Science and Engineering, Islamic Azad University, Bandar Abbas Branch, 7915893144 Bandar Abbas, Hormozgan, Iran;

چکیده [English]

In this research, the effect of double layer cladding on the microstructural and mechanical properties of A283 steel substrates has been studied. In this regard, 347 stainless steel and Inconel 625 were selected as filler rods and GTAW was used for the coating process. Microstructure and mechanical properties of the resulted coating were then examined. Microscopic observations revealed that, due to the high solidification rate, a columnar dendrite microstructure was formed, where a single layer of coating was applied. The columnar dendritic morphology of the first layer was converted to island state and acicular dendrites after applying the second layer. EDS analysis confirmed the presence of carbides in both coating layers. The results of line scan analysis indicated a mild slope in the changes of the chemical concentration of the elements from the substrate to the 347 and then 625 coating layers. On the contrary, a noticeable change in the concentration of the elements was observed by applying a single layer of 625 alloy on the substrate, without the presence of 347 alloy as inter-layer. The results of hardness and wear tests showed that the highest hardness values and wear resistance belonged to the Inconel 625 coating. By applying Inconel 625 coating, hardness values and wear resistance were respectively increased up to ~ 41% and 3.5 times higher, when compared to the same values of A283 steel substrate. Also, applying the 347 coating caused an improvement of hardness and wear resistance to ~ 18% and 1.7 times higher, respectively.

کلیدواژه‌ها [English]

• GTAW welding
• A283 steel
• Coating
• Inconel 625
• 347 stainless steel

مراجع

1.         Selatnia, I., Sid, A., Benahmed, M., Ozturk, T., and Gherraf, N., "Synthesis and Characterization of a Bis-Pyrazoline Derivative as Corrosion Inhibitor for A283 Carbon Steel in 1M HCl: Electrochemical, Surface, DFT and MD Simulation Studies", Protection of Metals and Physical Chemistry of Surfaces, Vol. 54, No. 6, pp. 1182-1193, (2018).

   2. Wei, D., Wang, X., Wang, R., and Cui, H., "Surface Modification of 5CrMnMo Steel with Continuous Scanning Electron Beam Process", Vacuum, Vol. 149, pp. 118-123, (2018).
   3. Liu, H., Li, X., Liu, J., Gao, W., Du, X., and Hao, J., "Microstructural Evolution and Properties of Dual-Layer CoCrFeMnTi0. 2 High-Entropy Alloy Coating Fabricated by Laser Cladding", Optics & Laser Technology,Vol. 134, pp. 106646, (2021).
   4. Krylova, T. A., and Chumakov, Y. A., "Fabrication of Cr-Ti-C Composite Coating by Non-Vacuum Electron Beam Cladding", Materials Letters, Vol. 274, pp. 128022, (2020).
   5. Qin, Y., Li, X., Liu, C., Zheng, C., Mao, Q., Chen, B., and Zhang, L., "Effect of Deposition Temperature on the Corrosion Behavior of CVD SiC Coatings on SiCf/SiC Composites Under Simulated PWR conditions", Corrosion Science, Vol. 181, pp. 109233, (2021).
   6. Ramkumar, T., Selvakumar, M., Mohanraj, M., Chandramohan, P., and Narayanasamy, P., "Microstructure and Corrosion Behavior of ZnO-Mg Coating on AISI 4140 Steel Fabricated by Spray Coating", Journal of Materials Engineering and Performance, Vol. 29, No. 9, pp. 5796-5806, (2020).
   7. Lima, C. R. C., Belém, M. J. X., Fals, H. D. C., and Della Rovere, C. A., "Wear and Corrosion Performance of Stellite 6® Coatings Applied by HVOF Spraying and GTAW Hotwire Cladding", Journal of Materials Processing Technology, Vol. 284, pp. 116734, (2020).
   8. Mirshekari, G. R., Daee, S., Bonabi, S. F., Tavakoli, M. R., Shafyei, A., and Safaei, M., "Effect of Interlayers on the Microstructure and Wear Resistance of Stellite 6 Coatings Deposited on AISI 420 Stainless Steel by GTAW Technique", Surfaces and Interfaces, Vol. 9, pp. 79-92, (2017).
   9. Kou. S., "Welding Metallurgy". John Wiley & Sons. New Jersey. pp. 431-446. (2003).
   10. Ostovan, F., Hasanzadeh, E., Toozandehjani, M., Shafiei, E., Jamaluddin, K. R., and Amrin, A., "Microstructure, Hardness and Corrosion Behavior of Gas Tungsten Arc Welding Clad Inconel 625 Super Alloy over A517 Carbon Steel Using ERNiCrMo3 Filler Metal", Journal of Materials Engineering and Performance, Vol. 29, No. 10, pp. 6919-6930, (2020).
   11. Xu, X., Mi, G., Chen, L., Xiong, L., Jiang, P., Shao, X., and Wang, C., "Research on Microstructures and Properties of Inconel 625 Coatings Obtained by Laser Cladding with Wire", Journal of Alloys and Compounds, Vol. 715, pp. 362-373, (2017).
   12. Kumar, N. P., and Shanmugam, N. S., "Some Studies on Nickel Based Inconel 625 Hard Overlays on AISI 316L Plate by Gas Metal arc Welding Based Hardfacing Process", Wear, Vol. 456, pp. 203394, (2020).
   13. Farias, F. W. C., da Cruz Payão Filho, J., da Silva Júnior, D. A., de Moura, R. N., and Rios, M. C. G., "Microstructural Characterization of Ni-Based Superalloy 625 Clad Welded on a 9% Ni Steel Pipe by Plasma Powder Transferred Arc", Surface and Coatings Technology, Vol. 374, pp. 1024-1037, (2019).
   14. Feng, K., Chen, Y., Deng, P., Li, Y., Zhao, H., Lu, F., and Li, Z., "Improved High-Temperature Hardness and Wear Resistance of Inconel 625 Coatings Fabricated by Laser Cladding", Journal of Materials Processing Technology, Vol. 243, pp. 82-91, (2017).
   15. Abioye, T. E., McCartney, D. G., and Clare, A. T., "Laser Cladding of Inconel 625 Wire for Corrosion Protection", Journal of Materials Processing Technology, Vol. 217, pp. 232-240, (2015).
   16. Rozmus-Górnikowska, M., and Blicharski, M., "Microsegregation and Precipitates in Inconel 625 arc Weld Overlay Coatings on Boiler Pipes", Archives of Metallurgy and Materials, Vol. 60, No. 4, pp. 2599-2606, (2015).
   17. Rao, N. V., Reddy, G. M., and Nagarjuna, S., "Weld Overlay Cladding of High Strength Low Alloy Steel with Austenitic Stainless Steel–Structure and Properties", Materials & Design, Vol. 32, No. 4, pp. 2496-2506, (2011).
   18. Ramirez–Ledesma, A. L., Acosta–Vargas, L. A., and Juarez–Islas, J. A., "Suppression of Interdendritic Segregation During Welding of a 347 Austenitic Stainless Steel Pipe Reactors", Engineering Failure Analysis, Vol. 114, pp. 104589, (2020).
   19. Chen, J. H., Hua, P. H., Chen, P. N., Chang, C. M., Chen, M. C., and Wu, W., "Characteristics of Multi-Element Alloy Cladding Produced by TIG Process", Materials Letters, Vol. 62, No. 16, pp. 2490-2492, (2008).
   20. Madadi, F., Rezaeian, A., Edris, H., and Zhiani, M., "Improving Performance in PE222MFC by Applying Different Coatings to Metallic Bipolar Plates", Materials Chemistry and Physics, Vol. 238, pp. 121911, (2019).
   21. Chen, J. H., Chen, P. N., Hua, P. H., Chen, M. C., Chang, Y. Y., and Wu, W., "Deposition of Multicomponent Alloys on Low-Carbon Steel Using Gas Tungsten Arc Welding (GTAW) Cladding Process", Materials Transactions, Vol. 50, No. 3, pp. 689-694, (2009).
   22. Seddighi, S., Ostovan, F., Shafiei, E., and Toozandehjani, M., "A Study on the Effect of Stress Relief Heat Treatment on the Microstructure and Mechanical Properties of Dissimilar GTAW Weld Joints of Inconel 625 and A106 Carbon Steel", Materials Research Express, Vol. 6, No. 8, pp. 086582, (2019).
   23. Silva, C. C., De Miranda, H. C., Motta, M. F., Farias, J. P., Afonso, C. R. M., and Ramirez, A. J., "New Insight on the Solidification Path of an Alloy 625 Weld Overlay", Journal of Materials Research and Technology, Vol. 2, No. 3, pp. 228-237, (2013).
   24. Baker. H. and Okamoto. H.. "ASM Handbook. Vol. 3. Alloy Phase Diagrams", ASM International. Materials Park. Ohio, Vol. 3, pp. 501-550. (1992).
   25. Maltin, C. A., Galloway, A. M., and Mweemba, M., "Microstructural Evolution of Inconel 625 and Inconel 686CPT Weld Metal for Clad Carbon Steel Linepipe Joints: A Comparator Study", Metallurgical and Materials Transactions A, Vol. 45, No. 8, pp. 3519-3532, (2014).
   26. Xing, X., Di, X., and Wang, B., "The Effect of Post-Weld Heat Treatment Temperature on the Microstructure of Inconel 625 Deposited Metal", Journal of Alloys and Compounds, Vol. 593, pp. 110-116, (2014).
   27. DuPont, J. N., Marder, A. R., Notis, M. R., and Robino, C. V., "Solidification of Nb-Bearing Superalloys: Part II. Pseudoternary Solidification Surfaces", Metallurgical and Materials Transactions A, Vol. 29, No. 11, pp. 2797-2806, (1998).
   28. Rahim, E.A., Warap, N.M., Mohid, Z., Ibrahim, M.R. and Ismail, M.I.S., "A Prediction of Laser Spot-to-Cutting Tool Distance in Laser Assisted Micro Milling Inconel 718", Advances in Materials and Processing Technologies, Vol. 1, No. 3-4, pp. 529-541, (2015).
   29. Lim, S. C., and Ashby, M. F., "Overview No. 55 Wear-Mechanism Maps", Acta Metallurgica, Vol. 35, No. 1, pp. 1-24, (1987).