Founding Research Journal

Founding Research Journal

Comparison of Wear Behavior of Ductile Iron in Austempered and Quenched-Tempered Conditions ‎

Document Type : Original Research Article

Authors
Hassan Saghafian Larijani 1
Soheil Navaei 2
Ali Sharifi 2
1 Associate Professor, School of Metallurgy and Materials Engineering, Iran University of Science and Technology
2 School of Metallurgy and Materials Engineering, Iran University of Science and Technology
10.22034/frj.2019.179001.1079
Abstract
 In this study, wear behavior of the pearlitic ductile cast iron samples with the same hardness achieved by applying two different heat treatment cycles have been studied. A number of these samples after austenitzing at 900°C were quenched into a molten salt bath of 290°C for holding time of 120 minutes followed by cooling in air. The rest of the samples after being austenitized under the same conditions were quenched in oil and then were tempered in 505°C for 75 minutes. To compare wear behavior of the aforementioned cast irons, the “pin on the disk” method based on the ASTM-G99 standard was used. In this method, the samples were prepared in the form of disks and were worn by 52100 steel pins for a constant distance of 1000 meters and the sliding speed of 0.08 m/s at the applied loads of 25 N and 75 N. Based on the results obtained from the wear surface observations, mass reduction and friction coefficient measurements of the worn samples, it was revealed that at the lower applied load, the quenched and then tempered samples exhibited a higher wear resistance comparing to the austempered samples. Whereas at the higher applied load (75 N) the inverse result was achieved.
Keywords
Ductile iron
Austempering
Quench and temper
Heat treatment
Wear
Subjects
[1]  Rundma K.B., Moore D.J., Hayrynen K.L., Dubensky W.J., Rouns T.N., The microstructure and mechanical properties of austempered ductile iron, Journal of Heat Treatment, 1988, 79–95.
[2]  Keough J. R., An ADI market primer, Foundry Managment, 1999, 27–31.
[3]  Sellamuthu P., Samuel D.G., Harris D.D., Premkumar V., Li Z., Seetharaman S., Austempered Ductile Iron (ADI): Influence of austempering temperature on microstructure, mechanical and wear properties and energy consumption, Metals, 2018, 8, 53.
[4] منتظری س.م.، کزازی آ.، بوترابی س.م.ع.، سینتیک آستمپرینگ چدن با گرافیت فشرده حاوی 5 % آلومینیم، ششمین کنفرانس بین المللی مهندسی مواد و متالورژی، 1396.
[5] شاکری ب.، بوترابی س.م.ع، بررسی ریزساختار و سختی چدن نشکن آلومینیمی آستمپرشده (Fe-3.4C-4.3Al-Mg) در محدوده بینایت بالایی، پژوهشنامه ریخته‌گری، تابستان 1389، جلد 3، شماره 2، صفحات 75-90.
[6]  Rouns, T.N., Rundman, K. B., Constitution of Austempered ductile iron and kinetics of austempering, AFS Trans, 1987, 399–409.
[7]  Sohi M.H., Nili Ahmadabadi M, Bahrami Vahdat A., The role of austempering parameters on the structure and mechanical properties of heavy section ADI, Journal of Materials Processing Technology, 2004, 153-154, 203–208.
[8]  Harding R.A., The production, properties and automotive applications of austempered ductile iron, Kovove Materialy, 2007, 1–16.
[9]  ASM handbook Volume 04 Heat Treating, 2008.
[10] Hayrynen K.L., Brandenberg K. R., Keuogh J.R., Application of Austempered Ductile Irons, AFS Transactions, 2002, 1-10.
[11] Suh N.P., Tribophysics, Pretice-Hall, Englewood Cliffs, New Jersey 07632, USA,1986.
[12]   Totten GE. ASM Handbook, Volume 18: Friction, Lubrication and Wear Technology. ASM international, Cleveland, 1992.
[13]   Palak A., Tanusz C., The meclanism of chages in the Surface layer of gray cast iron automotive brake disc, Materials Research, 2005, 435–479.
[14]   اصل رحیمی م.ع.، بررسی خواص مکانیکی، رفتار سایشی و سختی‌پذیری چدن نشکن آستمپر حاوی عناصر آلیاژی Mo- Ni- Cu، پنجمین کنفرانس ملی مهندسی ساخت و تولید، تهران، انجمن مهندسی ساخت و تولید، 1381 .
[15]   Luo Q, Xie J, Song Y., Effects of microstructures on the abrasive wear behaviour of spheroidal cast iron, Wear, 1995, 184(1)1-10.
[16]   Fordyce E P, Allen C., The dry sliding wear behaviour of an austempered spheroidal cast iron, Wear, 1990, 135(2) 265–278.
[17]   Haseeb A.S.M.A., Islam M.A., Bepari M.M.A., Tribological behaviour of quenched and tempered, and austempered ductile iron at the same hardness level, Wear, 2000, 244(1-2) 15–19.
[18]   Wang B., Barber G., He M., Sun X., et al., Study of Ausferrite Transformation Kinetics for Austempered Ductile Irons with and without Ni, SAE Tech, 2016.
[19]   Rundman K.B., Moore D.J., Hayrynen K.L., Dubensky J., Rouns T.N., The microstructure and mechanical properties of austempered ductile iron, Journal of Heat Treatment, 1988, 79–95.
[20]   George, E. T., Steel Heat Treatments: metallurgy and Technologies, Steel treatment hand book, 2007.
[21]   Hutchings I., Shipway, P., Tribology: Friction and Wear of Engineering Materials, Butterworth-Heinemann, Second Edition, 2017.
[22]   Balachandran G., Vadiraj A., Kamaraj, Kazuya E., Mechanical and wear behavior of alloyed gray cast iron in the quenched andtempered and austempered condition, Materials Design, 2011, 4042–4049.
[23]   Davis J.R., Cast irons ASM specialty handbook, 1st ed. ASM International, 1996.
[24]   Lu G.X. Zhange H., Siliding wear characteristics of austempered ductile iron with and without laser hardening, Wear, 1990, 138(1-2) 1-12.
[25]   Wang B., et al., Tribological performance of austempered and tempered ductile iron, Metallurgical and Materials Transactions ‎B, 2018, 49, 2261-2269.
[26]   Pourasiabi H., Saghafian H., Pourasiabi H., Effect of Austempering Process on Microstructure and Wear Behavior of Ductile Iron Containing Mn-Ni-Cu-Mo, Metals and Materials International, 2013, 67–76.
Founding Research Journal
Volume 3, Issue 3 - Serial Number 10
Autumn 2019
Pages 141-150

  • Receive Date 19 April 2019
  • Revise Date 09 August 2019
  • Accept Date 12 August 2019