| Effect of Heat Treatment parameters on Microstructure morphology and Mechanical Properties of automotive steel Shahid Hussain Abro1; Guwanwook Thouth Kim2; 1NED UNIVERSITY OF ENGINEERING AND TECHNOLOGY PAKISTAN, KARACHI, Pakistan; 2KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, Daejeon, South Korea; PAPER: 309/Metals/Regular (Oral) SCHEDULED: 18:15/Wed. 30 Nov. 2022/Arcadia 1 ABSTRACT: The SAE/AISI 1045 steel is one of the structural steels widely used in the automotive sector to several key components such as connecting shafts, axles etc. It is also used in petrochemicals and power generation units. In material science and engineering; four interdependent parameters are of paramount importance which includes; process structure, properties and performance. Among all factors the structure / microstructure is of utmost importance since it governs the properties at large. For example it depends on the size, shape, and distribution of various micro constituents therein. Therefore, the main aim of this study is to investigate the response of the microstructures (structure-property correlation) upon application of heat treatment processes such as annealing, normalizing, tempering and hardening. This was followed by the characterization such as spectrometry analysis was carried out for chemical composition of the steel. While impact and hardness tests were also conducted. Results suggest an improved toughness and hardness when tempering temperature was reduced. This is attributed to decreased grain sizes of micro constituents upon such treatment. Interestingly one more aspect was noted that the chemical composition changes slightly during heat treatment processes which might be in range of standard. However, it could affect the surface properties of steel during service. References: K. Funatani and G. Totten, "Present Accomplishments and Future Challenges of Quenching Technology," in Proceedings of the 6th International Federation of Heat treatment and Surface Engineering Congress, IFHTSE, Kyongju, Korea, 1997, pp. 20-27. [2] D. Fadare, T. Fadara, and O. Akanbi, "Effect of heat treatment on mechanical properties and microstructure of NST 37-2 steel," 2011. [3] T. Gladman, D. Dulieu, and I. McIvor, "Microalloying 75 Symposium," Washington, DC, pp. 25-34, 1977. [4] P. N. Rao, Manufacturing technology vol. 1: Tata McGraw-Hill Education, 2013. [5] A. Çalik, "Effect of cooling rate on hardness and microstructure of AISI 1020, AISI 1040 and AISI 1060 Steels," International journal of Physical sciences, vol. 4, pp. 514-518, 2009. [6] S. Sankaran, V. S. Sarma, and K. Padmanabhan, "Low cycle fatigue behavior of a multiphase microalloyed medium carbon steel: comparison between ferrite–pearlite and quenched and tempered microstructures," Materials Science and Engineering: A, vol. 345, pp. 328-335, 2003. [7] G. Gopalkrishna, R. B. Gurumurthy, and M. Davanageri, "Heat treatment and mechanical characterization of En8 steel," in AIP Conference Proceedings, 2019, p. 050005. [8] S. Rahman, K. E. Karim, and M. H. S. Simanto, "Effect of Heat Treatment on Low Carbon Steel: An Experimental Investigation," in Applied Mechanics and Materials, 2017, pp. 7-12. [9] C. M. Moleejane, "An experimental investigation of the effect of microstructural features on mechanical properties of EN8 steel," Cape Peninsula University of Technology, 2009. [10] M. B. Ndaliman, "An assessment of mechanical properties of medium carbon steel under different quenching media," AU JT, vol. 10, pp. 100-104, 2006. [11] S. Harisha, S. Sharma, U. A. Kini, and M. G. Shankar, "Study on Spheroidization and Related Heat Treatments of Medium Carbon Alloy Steels," in MATEC Web of Conferences, 2018, p. 02008. [12] T. Senthilkumar and T. K. Ajiboye, "Effect of heat treatment processes on the mechanical properties of medium carbon steel," Journal of Minerals & Materials Characterization & Engineering, vol. 11, pp. 143-152, 2012. [13] I. Akhyar and M. Sayuti, "Effect of heat treatment on hardness and microstructures of AISI 1045," in Advanced Materials Research, 2015, pp. 575-579. [14] T. B. Massalski, "Binary alloy phase diagrams," ASM international, vol. 3, p. 2874, 1992. [15] G. F. Vander Voort, S. R. Lampman, B. R. Sanders, G. J. Anton, C. Polakowski, J. Kinson, et al., "ASM handbook," Metallography and microstructures, vol. 9, pp. 44073-0002, 2004. [16] N. M. Ismail, N. A. A. Khatif, M. A. K. A. Kecik, and M. A. H. Shaharudin, "The effect of heat treatment on the hardness and impact properties of medium carbon steel," in IOP Conference Series: Materials Science and Engineering, 2016, p. 012108. |
