A Brief Study on Defect Reduction of Cast Fe-Ni-Cr Alloy (UNS N08120) for Petrochemical Industry

Abstract:

In the current advancing world, operability and ease in processability of a material define its selection criteria for the intended applications. Hence, the industrial applications requiring high temperature sustenance, strength and corrosion resistance desperately demand the materials which employ simple processing in an economical way. Contemplating last few decades, it has been discovered that industries like petrochemical, power generation, nuclear energy, etc. greatly relied on nickel-based alloys till Fe-Ni-Cr based alloys were not introduced. The usable components are obtained either in cast or wrought form as per requirements. Fully killed alloy, developed under controlled conditions with some precautions during the casting process can lead to sound casting. The current study adopts a novel preliminary approach to control the quality of cast UNS N08120 material and minimize the possibility of defect generation. The possible reasons behind cast defects and how they transform into intrinsic defects have also been discussed. Calcium-based fluxes are introduced to molten metal as a degassing agent for the elimination of lighter impurities and entrapped gases. By the addition of quicklime (CaO) as a flux material during the sand casting process, an attempt has been made to reduce the presence of gases and impurities by more than 80%.

• Periodical: Advances in Science and Technology (Volume 116)
• Pages: 43-52
• DOI: https://doi.org/10.4028/p-pu0tn7
• Online since: August 2022
• Authors: Kaustubh Samvatsar*, Harsh Dave
• Keywords: Degassing, Induction Melting Furnace, Optical Emission Spectroscopy, Petrochemical, Porosity Reduction, Quicklime (CaO), Sand Casting, UNS N08120

References

[1] P. Elliott, Overcome the challenge of high temperature corrosion, in Corrosion, Houston, TX, USA (2011).

[2] P. Elliott, Materials performance in high temperature environments - making the choice, in Corrosion, Orlando, FL, USA (2000).

[3] R.C. John, I.G. Wright, Long-term oxidation commercial alloys in PO2's of 0.001 - 1 atma, at temperatures of 200 - 1,150ºC and after 20,000 hr, in corrosion, New Orleans, LA, USA (2004).

[4] D.L. Klarstrom, S.K. Srivastava, Selection of high performance alloys for high temperature corrosion environments, in Corrosion, Houston, TX, USA (2005).

[5] Principal Features, HAYNES HR-120 alloy, Haynes International. Available: https://www.haynesintl.com/alloys/alloy-portfolio_/High-temperature-Alloys/HAYNES-HR-120-ALLOY.aspx. [Accessed 25-May-2021].

DOI: 10.31399/asm.ad.ni0395

[6] Heat Resistant Alloys, NAS H38X (UNS N08120), Nippon Yakin Kogyo Co., Ltd. Available: https://www.nyk.co.jp/en/products/alloys/heat/h38x.html. [Accessed 25-May-2021].

[7] W.J. Matthews, K.L. More, L.R. Walker, Long-term microturbine exposure of an advanced alloy for microturbine primary surface recuperators, in Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air GT2008, Berlin, Germany (2008).

DOI: 10.1115/gt2008-50037

[8] M.D. Rowe, V.R. Ishwar, D.L. Klarstrom, Properties, Weldability, and applications of modern, wrought, heat-resistant alloys for aerospace and power generation industries, in ASME Turbo Expo 2004: Power for Land, Sea, and Air, Vienna, Austria (2004).

DOI: 10.1115/gt2004-54309

[9] K. Son, T.Q. Phan, L.E. Levine, K. Kim, K. Lee, M. Ahlfors, M.E. Kassner, The creep and fracture properties of additively manufactured inconel 625, Materialia 15 (2021) 1010-21.

DOI: 10.1016/j.mtla.2021.101021

[10] An International Code 2010: ASME Boiler & Pressure Vessel Code II - Part B - Nonferrous Material Specifications, ASME, New York, USA (2011).

[11] M.A. Harper, G.Y. Lai, Nickel-based alloys for resistance to high-temperature corrosion, in Environmental Effects on Engineered Materials, CRC Press (2001) 35.

DOI: 10.1201/9780203908129.ch4

[12] A. Viswanath, H. Dieringa, K.K.A. Kumar, U.T.S. Pillai, B.C. Pai, Investigation on mechanical properties and creep behavior of stir cast AZ91-SiCp composites, Journal of Magnesium and Alloys 3 (2015) 16-22.

DOI: 10.1016/j.jma.2015.01.001

[13] X. Zhao, Y. Qi, J. Wang, Z. Zhang, J. Zhu, L. Quan, Effect of cast defects on the corrosion behavior and mechanism of UNS c95810 alloy in artificial seawater, Materials 13 (2020) 1790.

DOI: 10.3390/ma13071790

[14] M. Perzyk, A. Kochanski, Detection of causes of casting defects assisted by artificial neural networks, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 217 (2003) 1279-1283.

DOI: 10.1243/095440503322420205

[15] N. Mahomed, H. A. Kleynhans, Reducing shrinkage porosity in high-performance steel castings: case of an ASME b16.34 gate valve body: part 2—simulation and experimental verification, International Journal of Metalcasting 13 (2019) 463–472.

DOI: 10.1007/s40962-018-0275-7

[16] S. Ramrattan, Evaluating a ceramic resin-coated sand for aluminum and iron castings, International Journal of Metalcasting 13 (2019) 519-527.

DOI: 10.1007/s40962-018-0269-5

[17] M.A.A. Khan, A.K. Sheikh, Simulation tools in enhancing metal casting productivity and quality: A review, Proceedings of the Institution of Mechanical Engineers 230 (2016) 1799-1817.

DOI: 10.1177/0954405416640183

[18] L.K.P. Lukáš, R. Konečná, S. Fintová, Casting defects and high temperature fatigue life of IN 713LC superalloy, International Journal of Fatigue 41 (2012) 47-51.

DOI: 10.1016/j.ijfatigue.2011.12.002

[19] B.N. Rao, R. Ashokkumar, Effect of blow-holes on reliability of cast component, Sadhana 33 (2008) 733–751.

DOI: 10.1007/s12046-008-0031-4

[20] M.L. Skryabin, V.A. Likhanov, The study of casting defects in steel 35HGSL, Journal of Physics: Conference Series 1399 (2019) 044063.

DOI: 10.1088/1742-6596/1399/4/044063

[21] J. Zhang, T. Huang, L. Liu, H. Fu, Advances in solidification characteristics and typical casting defects in nickel-based single crystal superalloys, Acta Metallurgica Sinica 51 (2015) 1163-1178.

[22] E.M. Gutman, Y. Unigovski, M. Levkovitch, Z. Koren, Influence of Porosity and Casting Conditions on Creep of Die-cast Mg Alloy, Journal of Materials Science Letters 17 (1998) 1787–1789.

DOI: 10.1023/a:1006601419020

[23] B. Han, W.J. Wan, C.L. Zhu, J. Zhang, J.H. Yi, Effect of casting defects on high cycle fatigue life of fully lamellar TiAl alloy, Materials Research Innovations 19 (2015) S142-S146.

DOI: 10.1179/1432891715z.0000000001530

[24] X. Zang, L. Liu, C. Yang, J. Zhang, Y. Li, H. Fu, Advance in research of casting defects of directionally solidified nickel-based single superalloys, Journal of Materials Engineering 2 (2012) 93-98.

[25] K. Samvatsar, H. Dave, Study on Defect Reduction in Casting of Ni-Cr alloy (UNS N06003), IOP Conference Series: Materials Science and Engineering 1225 (2022) 012065.

DOI: 10.1088/1757-899x/1225/1/012065

[26] N. Bannenberg, B. Bergmann, H. Gaye, Combined decrease of sulphur, nitrogen, hydrogen and total oxygen in only one secondary steelmaking operation, Steel Research 63 (1992) 431-437.

DOI: 10.1002/srin.199201737

[27] N. Masumitsu, K. Ito, R. J. Fruehan , Thermodynamics of Ca-CaF2 and Ca-CaCl2 systems for the dephosphorization of steel, Metallurgical Transactions B 19 (1988) 643–648.

DOI: 10.1007/bf02659156

[28] L. Lu, S. Devasahayam, V. Sahajwalla, 14 - Evaluation of coal for metallurgical applications, in The Coal Handbook: Towards Cleaner Production - Coal Utilisation - Volume 2, Woodhead Publishing Limited (2013) 352-386.

DOI: 10.1533/9781782421177.3.352

[29] S. Trivedi, P. Gupta, Effect of phosphorus addition in steel: processed through cast route and powder metallurgy route, Journals of Mechatronics Machine Design and Manufacturing 1 (2019) 24-28.

[30] J. Guo, W. Yang, X. Shi, Z. Zheng, S. Liu, S. Duan, J. Wu, H. Guo, Effect of sulfur content on the properties and mns morphologies of DH36 structural steel, Metals 8 (2018) 945.

DOI: 10.3390/met8110945

[31] W. Wang, S. Luo, Z. Cai, M. Zhu, The effect of phosphorus and sulfur on the crack susceptibility of continuous casting steel, in Materials Processing Fundamentals, Springer, Cham (2013) 89-98.

DOI: 10.1002/9781118662199.ch10

[32] B. Şener, R. Hüsken, J. Cappel, Desulphurization strategies in oxygen steelmaking, in AISTech 2012 - The Iron & Steel Technology Conference and Exposition, Atlanta, GA (2012).

[33] F. Xiong, R. Fu, Y. Li, B. Xu, X. Qi, Influences of nitrogen alloying on microstructural evolution and tensile properties of CoCrFeMnNi high-entropy alloy treated by cold-rolling and subsequent annealing, Materials Science and Engineering: A 787 (2020) 139472.

DOI: 10.1016/j.msea.2020.139472

[34] Z. Jiang, H. Li, Z. Chen, Z. Huang, D. Zou, L. Liang, The nitrogen solubility in molten stainless steel, Steel Research International 76 (2016).

DOI: 10.1002/srin.200506090

[35] A.G. Svyazhin, L.M. Kaputkina, V.E. Bazhenov, Z. Skuza, E. Siwka, V.E. Kindop, Phases and defects upon the solidification of nitrogen-alloyed stainless steels, The Physics of Metals and Metallography 116 (2015) 552–561.

DOI: 10.1134/s0031918x15060095

[36] I. Woo, Y. Kikuchi, Weldability of high nitrogen stainless steel, ISIJ International 42 (2002) 1334–1343.

DOI: 10.2355/isijinternational.42.1334

[37] J. Desai, V. Parikh, T. Shah, Reducing porosity for alloy steel casting, International Journal of Engineering Research & Technology 2 (2013) 871-874.

[38] Srinath Viswanathan et al. (Eds.), ASM Handbook Volume 15: Casting., Ohio, USA: ASM International (2008).

[39] B.D. Jana, A.K. Chakrabarti, A study on the mechanism of desulphurisation and dephosphorisation of liquid steel by Na2CO3 flux treatment, Scandinavian Journal of Metallurgy 33 (2004) 76-79.

DOI: 10.1111/j.1600-0692.2004.00666.x

[40] A. Freismuth, The use of calcium carbide in ferrous metallurgy, Metallurgist 41 (1997) 56-60.

DOI: 10.1007/bf02764762

[41] N. Maruoka, A. Ito, M. Hayasaka, H. Nogami, Effect of CO2 Content in Quicklime on Dissolution Rate of Quicklime in Steelmaking Slags, ISIJ International 57 (2017) 1684-1690.

DOI: 10.2355/isijinternational.isijint-2017-261

[42] Y. Liu, L. Zhang, Relationship between dissolved calcium and total calcium in Al-killed steels after calcium treatment, Metallurgical and Materials Transactions B 49 (2018) 1624–1631.

DOI: 10.1007/s11663-018-1288-6

[43] G. Yang, X. Wang, Inclusion evolution after calcium addition in low carbon Al-killed steel with ultra low sulfur content, ISIJ International 55 (2015) 126-133.

DOI: 10.2355/isijinternational.55.126

[44] S. Sanyal, D. Mishra, M. Sambandam, M. Panabaka, P. K. Ghorui, Experiences with calcium treatment of steel, in The 3rd International Conference on Science and Technology of Ironmaking and Steelmaking, Kanpur, India (2017).

[45] S. Dalquist, T. Gutowski, Life Cycle Analysis of Conventional Manufacturing Techniques: Sand Casting, in Proceedings of the ASME 2004 International Mechanical Engineering Congress and Exposition. Manufacturing Engineering and Materials Handling Engineering. Anaheim, California, USA (2004) 631-641.

DOI: 10.1115/imece2004-62599

[46] A. Bengtson, Laser induced breakdown spectroscopy compared with conventional plasma optical emission techniques for the analysis of metals – A review of applications and analytical performance, Spectrochimica Acta Part B: Atomic Spectroscopy 134 (2017) 123-132.

DOI: 10.1016/j.sab.2017.05.006

[47] M.V. Glazoff, A.V. Khvan, V.S. Zolotorevsky, N.A. Belov, A.T. Dinsdale, Dependence of castability and mechanical properties on composition and microstructure of aluminum alloys, in Casting Aluminum Alloys (Second Edition) Their Physical and Mechanical Metallurgy, Butterworth-Heinemann (2018) 313-404.

DOI: 10.1016/b978-0-12-811805-4.00004-3

[48] C. Yi, H. Zibing, W. Wei, X. Yun, Longitudinal distribution and mechanism of carbon and manganese elements in high carbon steel billet, Iron and Steel 51 (2016) 43-48.

[49] L. Holappa, O. Wijk, Chapter 1.7 - Inclusion Engineering, in Treatise on Process Metallurgy - Volume 3: Industrial Processes, Elsevier Ltd. (2014) 347-372.

DOI: 10.1016/b978-0-08-096988-6.00008-0