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Effect of Tin on Microstructure and Mechanical Properties of Compacted Graphite Iron
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, PR China.ORCID iD: 0000-0001-7560-6232
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, PR China.
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, PR China.
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, PR China.
2015 (English)In: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, Vol. 28, no 5, 263-268 p.Article in journal (Refereed) Published
Abstract [en]

This experiment investigated the effect of tin in an amount up to 0.121 wt.% on the microstructure and mechanical properties of compacted graphite iron (CGI). Graphite and matrix evolution was emphasized with the help of scanning electron microscopy. The results indicate that Sn in experimental range reduces graphite size. Pearlite quantity would increase with the increasing Sn and reaches over 95% when Sn is greater than 0.057 wt.%. Sn helps to narrow the lamellar spacing of pearlite from sorbitic pearlite (320 nm) to troostitic pearlite (83 nm) when Sn increases from 0.003 wt.% to 0.057 wt.%. Appropriate Sn addition promotes the tensile strength and impact toughness and the samples containing 0.057 wt.% Sn perform the highest values of 410.7 MPa and 9.11 J/cm2, respectively. Elongation declines with increasing Sn content because of the emergence of more pearlite. Samples containing excessive Sn experience sharply deterioration in mechanical properties due brittle cementite.

Place, publisher, year, edition, pages
Maney Publishing, 2015. Vol. 28, no 5, 263-268 p.
Keyword [en]
Compacted graphite iron, Electron Microscopy, Pearlite; Microstructure, Mechanical properties, Cementite
National Category
Tribology
Identifiers
URN: urn:nbn:se:kth:diva-169690DOI: 10.1179/1743133615Y.0000000009ISI: 000366945000002Scopus ID: 2-s2.0-84951837834OAI: oai:DiVA.org:kth-169690DiVA: diva2:824531
Note

QC 20160121

Available from: 2015-06-22 Created: 2015-06-22 Last updated: 2017-12-04Bibliographically approved

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