Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-05T01:00:57.708Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of carbon equivalent on thermal and mechanical properties of compacted graphite cast iron

Published online by Cambridge University Press:  01 August 2016

Yangzhen Liu ,
Jiandong Xing ,
Yefei Li ,
Yong Wang ,
Lei Wang ,
Baochao Zheng  and
Dong Tao
Yangzhen Liu*
Affiliation:
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
Jiandong Xing
Affiliation:
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
Yefei Li*
Affiliation:
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
Yong Wang
Affiliation:
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
Lei Wang
Affiliation:
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
Baochao Zheng
Affiliation:
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
Dong Tao
Affiliation:
School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, Shaanxi, 710021, People's Republic of China
*
a)Address all correspondence to these authors. e-mail: [email protected]
b)e-mail: [email protected]
Get access

Abstract

The effects of carbon equivalent on thermal and mechanical properties of compacted graphite cast irons were investigated at ambient temperature, 300 and 500 °C, respectively. The group implied the change of carbon content to control the carbon equivalent. The results indicated that with the increasing carbon equivalent from 4.43 to 4.74, the graphite count increase. The thermal conductivity was 48.64, 44.55, 49.04, and 50.36 W/mK for carbon equivalent about 4.43–4.74 of compacted graphite cast irons at ambient temperature, respectively. With an increase in temperature, the thermal conductivity decrease. Moreover, with the increasing carbon equivalent, the tensile strength and yield strength increase initially, and then decrease at ambient temperature, 300 and 500 °C, respectively. With an increase in temperature, the tensile strength and yield strength decrease. Characterization of fracture surface indicated that the mixed ductile-brittle fracture mode prevailed in the compacted graphite cast irons with different carbon equivalents.

Keywords

carbon equivalentthermal conductivitymechanical propertiescompacted graphite cast iron
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 16 , 29 August 2016 , pp. 2516 - 2523
Check for updates
Copyright
Copyright © Materials Research Society 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bazdar, M., Abbasi, H.R., Yaghtin, A.H., and Rassizadehghani, J.: Effect of sulfur on graphite aspect ratio and tensile properties in compacted graphite irons. J. Mater. Process. Technol. 209(4), 1701–1705 (2009).CrossRefGoogle Scholar
Górny, M. and Kawalec, M.: Effects of titanium addition on microstructure and mechanical properties of thin-walled compacted graphite iron castings. J. Mater. Eng. Perform. 22(5), 1519–1524 (2013).Google Scholar
Selin, M., Holmgren, D., and Svensson, I.L.: Effect of alloying elements on graphite morphology in CGI. Mater. Sci. Forum 649, 171–176 (2010).Google Scholar
Dawson, S. and Schroeder, T.: Practical applications for compacted graphite iron. AFS Trans. 47(5), 1–9 (2004).Google Scholar
Liu, J. and Ding, N.X.: Effect of type and amount of treatment alloy on compacted graphite produced by the flotret process. AFS Trans. 93, 675–688 (1985).Google Scholar
Cueva, G., Sinatora, A., Guesser, W.L., and Tschiptschin, A.P.: Wear resistance of cast irons used in brake disc rotors. Wear 255(7), 1256–1260 (2003).Google Scholar
Geier, G.F., Bauer, W., McKay, B.J., and Schumacher, P.: Microstructure transition from lamellar to compacted graphite using different modification agents. Mater. Sci. Eng., A 413, 339–345 (2005).Google Scholar
Guesser, W., Schroeder, T., and Dawson, S.: Production experience with compacted graphite iron automotive components. AFS Trans. 01–071, 1–11 (2001).Google Scholar
Qiu, H.Q. and Chen, Z.D.: The forty years of vermicular graphite cast iron development in China (part I). China Foundry 4(2), 91–98 (2007).Google Scholar
Yang, X., Zhang, Z.H., Wang, J.T., and Ren, L.Q.: Investigation of nanomechanical properties and thermal fatigue resistance of gray cast iron processed by laser alloying. J. Alloys Compd. 626, 260–263 (2015).Google Scholar
Chou, J.M., Hou, M.H., and Lee, J.L.: Affects of graphite morphology and matrix structure on mechanical properties of cast ions. J. Mater. Sci. 25(4), 1965–1972 (1990).CrossRefGoogle Scholar
Selin, M., Holmgren, D., and Svensson, I.L.: Influence of alloying additions on microstructure and thermal properties in compacted graphite irons. Int. J. Cast. Met. Res. 22(1–4), 283–285 (2009).CrossRefGoogle Scholar
König, M. and Wessén, M.: Influence of alloying elements on microstructure and mechanical properties of CGI. Int. J. Cast. Met. Res. 23(2), 97–110 (2010).Google Scholar
Fourlakidis, V. and Diószegi, A.: A generic model to predict the ultimate tensile strength in pearlitic lamellar graphite iron. Mater. Sci. Eng., A 618, 161–167 (2014).Google Scholar
Pirgazi, H., Ghodrat, S., and Kestens, L.A.I.: Three-dimensional EBSD characterization of thermo-mechanical fatigue crack morphology in compacted graphite iron. Mater. Charact. 90, 13–20 (2014).Google Scholar
Shy, Y.H., Hsu, C.H., Lee, S.C., and Hou, C.Y.: Effects of titanium addition and section size on microstructure and mechanical properties of compacted graphite cast iron. Mater. Sci. Eng., A 278(1), 54–60 (2000).Google Scholar
Hervas, I., Bettaieb, M.B., Thuault, A., and Hug, E.: Graphite nodule morphology as an indicator of the local complex strain state in ductile cast iron. Mater. Des. 52, 524–532 (2013).Google Scholar
Gonzaga, R.A.: Influence of ferrite and pearlite content on mechanical properties of ductile cast irons. Mater. Sci. Eng., A 567, 1–8 (2013).Google Scholar
Kim, S., Cockcroft, S.L., Omran, A.M., and Hwang, H.: Mechanical, wear and heat exposure properties of compacted graphite cast iron at elevated temperatures. J. Alloys Compd. 487(1), 253–257 (2009).Google Scholar
Moonesan, M., Honarbakhsh raouf, A., Madah, F., and Habibollah zadeh, A.: Effect of alloying elements on thermal shock resistance of gray cast iron. J. Alloys Compd. 520, 226–231 (2012).Google Scholar
Angus, H.T.: Cast Iron: Physical, and Engineering Properties, 2nd ed. (British Cast Iron Research Association, London, 1978).Google Scholar
Parker, W.J., Jenkins, R.J., Butler, C.P., and Abbott, G.L.: Flash method of determining thermal diffusivity, heat capacity, and thermal conductivity. J. Appl. Phys. 32(9) 1679–1784 (1961).Google Scholar
ASTM E8M-91: Annual Book of ASTM Standards, 1986 (ASTM International, West Conshohocken, 1986); pp. 637–644.Google Scholar
ASTM A247-67: Annual Book of ASTM Standards, 1990 (ASTM International, West Conshohocken, 1990); pp. 129–130.Google Scholar
Ryntz, E.F. Jr: Prediction of nodular iron microstructure using thermal analysis. AFS Trans. 79, 141–144 (1971).Google Scholar
Fatahalla, N., Abuelezz, A., and Semeida, M.: C, Si and Ni as alloying elements to vary carbon equivalent of austenitic ductile cast iron: Microstructure and mechanical properties. Mater. Sci. Eng., A 504(1), 81–89 (2009).CrossRefGoogle Scholar
Blackmore, P.A. and Morton, K.: Structure-property relationships in graphitic cast irons. Int. J. Fatigue 4(3), 149–155 (1982).CrossRefGoogle Scholar
Holmgren, D., Källbom, R., and Svensson, I.L.: Influences of the graphite growth direction on the thermal conductivity of cast iron. Metall. Mater. Trans. A 38(2), 268–275 (2007).Google Scholar
Asenjo, I., Larranaga, P., and Sertucha, J.: Effect of mould inoculation on formation of chunky graphite in heavy section spheroidal graphite cast iron parts. Int. J. Cast. Met. Res. 20(6), 319–324 (2007).Google Scholar
König, M.: Literature review of microstructure formation in compacted graphite iron. Int. J. Cast. Met. Res. 23(3), 185–192 (2010).Google Scholar